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Go Back   Head-Fi: Covering Headphones, Earphones and Portable Audio > Misc.-Category Forums > DIY (Do-It-Yourself) Discussions

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Old 11-28-2007, 05:19 AM   3 links from elsewhere to this Post. Click to view. #1 (permalink)
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Default The Apple diyMod: My Take on the Famous iMod [56k killer] Featuring 3G, 4G, 5G and nano 1G!

As many of you are aware of the iMod, I won't bore you with the details. Some of you may be aware that there are DIY "iMods" scattered throughout the world, and RedWineAudio is not the only to provide the world with the sonic beauty of the Wolfson Micro WM8975 CODEC. The details I will bore you with are about how I DIYed my own iMod. I was a bit hesitant to share at first, but this little bit of handiwork has landed me my second eargasm. The first was with the HF-1s at the first Edmonton Meet. I didn't think it was right to hold this to myself, so here are the very revealing pictures. Right now, the diyMod is mated with my Millett Hybrid MAX, and I'm sitting in a perpetual eargasm headphone Nirvana (not that I believe in Nirvana or anything). These pictures were taken after the fact, but are quite revealing. I realize that oicdn just started a thread about this, but I wanted more exposure and an easier to reference title for the thread. I didn't think it was fair to hold back this treasure.

The iMod site says Vinnie uses Black Gate NX Hi-Q Non-polar caps. The datasheet for the WM8971 says that a lineout require 1uF and 100ohms in series with the left and right channels and the stereo jack's ground goes to ground. I couldn't find a good place to solder the ground wire to, so I jabbed around the inside while listening to some music to make sure it would work. I think I wired it to the clicking mechanism, and music gets clicky when I use the click wheel. The clicking sound of the click wheel was subsequently disabled. It was only on because my friend enabled it; I never use it. I didn't have anything that would fit into the iPod, so there is a huge extension on the outside. That would be one advantage of the iMod over the diyMod, but I get way more props this way

"What the heck is wrong with your iPod, Jon?"

[Explanation ensues.]

"Dang, that's really cool, Jon. Do one for my iPod video."

The iPod video is a different beast, but we'll see how that comes along. Looking at the 1G iPod nano, it should be similarly simple to do this mod while connecting the caps outside of the original casing. And dang, I gave away my 1G iPod in France too. Hm.

Total cost of the diyMod: $20.

Warning: The diyMod is not the same as the iMod. The iMod is a product of Red Wine Audio, while the diyMod is a community project. Do not refer to the diyMod as the iMod as they are not the same.

Also, I take no responsibility if you destroy your iPod, mess up a warranty, or cause physical damage to yourself or others when you perform this mod. When you DIY, you do so at your own risk.

Further, this modification is not meant for beginners; go past this point at your own risk. The SMD elements we deal with are very small, and accidents can be potentially fatal to your iPod. When you DIY, you do so at your own risk.
Finally, make sure you secure your wires. An accidental tug could destroy your chances at sonic success.

Other than that, enjoy!

---------------------------

Table of Contents:

1.0.0 Credit
2.0.0 As Seen On
2.1.0 Hack A Day
3.0.0 Ideology
4.0.0 General iPod Information
4.1.0 iPodLinux
4.2.0 Dock Pin Information
5.0.0 Configurations
5.1.0 Caps outside iPod
5.1.1 Docking station
5.1.2 Portable dock
5.1.3 Convert headphone jack to line out
5.2.0 Caps inside iPod
5.2.1 Convert headphone jack to line out
5.2.2 Line out dock
6.0.0 DIY Resources
6.1.0 Tangentsoft's "Getting Started in Audio DIY" article
6.2.0 SMD Soldering Guide by Infidigm
6.3.0 Article from SparkFun Electronics
6.4.0 Engadget's "How To: Design your own iPod super dock" article
6.5.0 How to Pick Your Capacitors
6.6.0 Tangent's "Input Capacitors for Headphone Amps"
6.7.0 dsavitsk's "Some Notes on Coupling Capacitors"
6.8.0 VHAudio's 21 Capacitor Shootout
6.9.0 Humble Homemade Hifi's Cap Test
7.0.0 iPod opening guides
7.1.0 iFixit
7.2.0 ifixipodsfast.com
7.3.0 RapidRepair
8.0.0 Datasheets
8.1.0 Wolfson Microelectronics WM8731(L)
8.2.0 Wolfson Microelectronics WM8711
8.3.0 Wolfson Microelectronics WM8971(L) equivalent to WM8975
8.4.0 Wolfson Microelectronics WM8978 equivalent to WM8758
9.0.0 Supplies
9.1.0 iPod Dock Connectors
9.1.1 Qables
9.1.2 Ridax
9.1.3 SparkFun Electronics
9.1.4 Mouser
9.1.5 Digikey
9.1.6 Allied Electronics
9.2.0 General iPod repair
9.2.1 iFixit
9.2.2 ifixipodsfast.com
9.2.3 eBay
9.2.4 RapidRepair
9.2.5 iRepair
9.3.0 iPod batteries
9.3.1 Worcell - Singapore Premier Battery Bank
9.4.0 Black Gate Capacitors
9.4.1 Acoustic Dimension
9.4.2 Angela Instruments
9.4.3 Diy HiFi Supply
9.4.4 hificollective
9.4.5 parts conneXion
9.4.6 Sonic Craft
9.4.7 Tang Hill International Audio
9.5.0 Wire
9.5.1 navships, head-fi's favourite wire source
9.5.2 OK Industries 100' Spool 30AWG Wire Wrap

9.6.0 Compact Flash to iPod converters (make room for bigger internal capacitors)
9.6.1 eBay store for ehkseller. Look for 1.8" toshiba Hard Drive,SSD, CF to ipod IDE A05 Adaptor
9.6.2 tarkan's adapter for iPod video 5G/5.5G
9.6.3 DealExtreme CF to Toshiba 1.8 adapter
10.0.0 Capped Docks
10.1.0 By ALO audio
10.2.0 By CAvanessia
10.3.0 By EFN
10.4.0 By stevenkelby
10.5.0 By vvs_75
10.6.0 By warrior05
11.0.0 Digital out
11.1.0 I2S to S/PDIF transceiver
11.2.0 DIY iPod digital out
12.0.0 Guidelines
12.1.0 Simplify signal path
12.2.0 Secure your wires
12.3.0 Reduce collateral damage
12.4.0 Don't lose anything
A.A iPod 3G
A.B See cfcubed's guide

Figure A.A
Figure A.B
Figure A.C
B.A iPod 4G click wheel
Figure B.A
Figure B.B
Figure B.C
Figure B.D
C.A iPod 4G photo
Figure C.A
Figure C.B
D.A iPod 5G
D.B See aaronylee's guide
D.C See wgr73's guide

Figure D.A
Figure D.B
Figure D.C
Figure D.D
E.A iPod mini 1G
Figure E.A
F.A iPod mini 2G
Figure F.A
Figure F.B
Figure F.C
G.A iPod nano 1G
Figure G.A
Figure G.B
Figure G.C
H.A iPod nano 2G
Figure H.A
I.A iPod nano 3G
Figure I.A
J.A Zune 1G
Figure J.A
K.A Zune 2G
Figure K.A
Galleries
Gallery 1
Gallery 2
cfcubed's diyMod 3G
lwaudio's 3G
BrinNutz's diyMod 4G
ferds' diyMod 4G
KerryKing's diyMod 4G
KoKoKrunch's diyMod 4G
no_eye_dear's diyMod 4G
aaronylee's diyMod 5G
d_w31's diyMod 5G
Ramblingman's diyMod 5G
wgr73's diyMod 5G and dock
FallenAngel's mini 2G
joneeboi's mini 2G
CAvanessia's nano 1G
ishtob's nano 1G and CMoy
iQEM's nano 1G
ruZZ.il's nano 1G
vvs_75's nano 1G
wgr73's nano 1G
Zune 1G
Zune 2G
i.i Revision history

---------------------------

1.0.0 Credit:
Thanks to (in alphabetical order)

aaronylee
CAvanessia
cfcubed
FallenAngel
fatman711
ferds
iQEM
ishtob
Jambo
jERiCOh
KerryKing
KoKoKrunch
no_eye_dear
pcyl
ruZZ.il
Vinnie R.
vvs_75
wgr73

Let me know who I missed.

---------------------------

2.0.0 As seen on:
2.1.0 Hack A Day
DIY iPod DAC modding - Hack a Day
---------------------------

3.0.0 Ideology:

The purpose of the diyMod is to simplify the signal path from the DAC to the amp. To achieve this goal, the audio signal is taken directly after the DAC and sent to the amp, whether by the dock pins or by a pigtail. The content of a pigtail consists of the DC blocking, also known as coupling, caps and a headphone jack or plug. By necessity, we place DC blocking caps behind the DAC to protect our listening apparatuses. When sending the signal to the iPod dock, beware of caps going to ground, such as in the image in the nano 1G section. These will attenuate your high frequencies. Ensure that nothing lies between your DAC and amp but wires and traces.

---------------------------

4.0.0 General iPod Information:
4.1.0 iPodLinux
Wiki on each model's CPU, I/O, audio, storage, display controller, etc.
Generations - wikiPodLinux
4.2.0 Dock Pin Information - the top link gives the manufacturer's pinout number sequence, which is the opposite of what we use when referring to our line out pins, indicated by the bottom one. We use pinouts.ru's pin numbering sequence.
Dock Connector - wikiPodLinux
Apple iPod dock interface pinout and signals @ pinouts.ru
---------------------------

5.0.0 Configurations:

5.1.0 Caps outside iPod
5.1.1 Docking station
iPod 3G, 4G, 5G
iPod mini 1G
iPod nano 1G
5.1.2 Portable dock
iPod 3G, 4G, 5G
iPod mini 1G
iPod nano 1G
5.1.3 Convert headphone jack to line out
iPod 3G, 4G, 5G
iPod mini 1G
iPod nano 1G
5.2.0 Caps inside iPod
5.2.1 Convert headphone jack into line out
iPod 3G, 4G
iPod nano 1G
5.2.2 Line out dock
iPod 3G, 4G
iPod nano 1G
---------------------------

6.0.0 DIY Resources:
6.1.0 Tangentsoft's "Getting Started in Audio DIY" article
Getting Started in Audio DIY
6.2.0 SMD Soldering Guide by Infidigm
SMD Soldering Guide by Infidigm
6.3.0 Article from SparkFun Electronics
SparkFun Electronics
6.4.0 Engadget's "How To: Design your own iPod super dock" article
Part 1: How-To: Design your own iPod super dock (Part 1) - Engadget
Part 2: How-To: Design your own iPod super dock (Part 2) - Engadget
Part 3: How-To: Design your own iPod super dock (Part 3) - Engadget

6.5.0 How to Pick Your Capacitors
Start at post 865

6.6.0 Tangent's "Input Capacitors for Headphone Amps"
Input Capacitors for Headphone Amps

6.7.0 dsavitsk's "Some Notes on Coupling Capacitors"
ecp.cc

6.8.0 VHAudio's 21 Capacitor Shootout
http://www.vhaudio.com/21capacitorshootout.pdf

6.9.0 Humble Homemade Hifi's Cap Test
Humble Homemade Hifi Cap Test
---------------------------

7.0.0 iPod opening guides:
7.1.0 iFixit
Pictorials for 1G, 2G, 3G, 4G, 5G, 5.5G, mini 1G, mini 2G, nano 1G, nano 2G, shuffle 1G, shuffle 2G
Fixit Guide Series: iPod Disassembly Instructions
7.2.0 ifixipodsfast.com
Videos for 3G, 4G, 5G, and 5.5G
ifixipodsfast.com iPod How To Video Tutorials

7.3.0 RapidRepair
Pictorials for 5G, 5.5G, nano 1G, and nano 2G
Videos for 4G, 5G, 5.5G, and nano 1G
IPOD REPAIR GUIDES: RapidRepair
---------------------------

8.0.0 Datasheets:

8.1.0 Wolfson Microelectronics WM8731(L)
http://www.wolfsonmicro.com/uploads/...8731_8731L.pdf
iPod 3G
iPod mini 1G
8.2.0 Wolfson Microelectronics WM8711
http://www.wolfsonmicro.com/uploads/.../en/WM8711.pdf
iPod mini 2G
8.3.0 Wolfson Microelectronics WM8971(L) equivalent to Wolfson Microelectronics WM8975
http://www.wolfsonmicro.com/uploads/...nts/WM8971.pdf
iPod 4G
iPod nano 1G
8.4.0 Wolfson Microelectronics WM8978 equivalent to Wolfson Microelectronics WM8758
http://www.wolfsonmicro.com/uploads/...nts/WM8978.pdf
iPod 5G
Zune 1G
iPod nano 2G(?)
iPod nano 3G(?)
---------------------------

9.0.0 Supplies:

9.1.0 iPod Dock Connectors:
9.1.1 Qables
Qables | High Quality Custom Made Qables
9.1.2 Ridax
iPod/iPhone Dock Connector ordering
9.1.3 SparkFun Electronics
SparkFun Electronics

9.1.4 Mouser
DD1P030MA1
DD1B030HA1R500
DD1B030VA1

9.1.5 Digikey
Digi-Key - 670-1021-ND (JAE Electronics - DD1P030MA1)

9.1.6 Allied Electronics
JAE Electronics, Inc. - DD1B030HA1R500 - Allied Electronics
9.2.0 General iPod repair:
9.2.1 iFixit
iFixit: iPod, iBook, & PowerBook Parts and Accessories
9.2.2 ifixipodsfast.com
iPod Parts / Installation
9.2.3 eBay
eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices

9.2.4 RapidRepair
Rapid Repair: iPod Repair, iPhone Repair, Batteries, LCD Screens and more!

9.2.5 iRepair
iRepair.ca iPod, iPhone, Mac
iRepair.us iPod, iPhone, Mac, Repair Facility -
9.3.0 iPod batteries
9.3.1 Worcell - Singapore Premier Battery Bank
WORCELL - Singapore Premier Battery Bank
9.4.0 Black Gate Capacitors:
Look for NX Hi-Q 6.3V 22uF or 47uF. The more capacitance, the smaller the value of the corner frequency and the bigger the packaging. 47uF is consensus.
f = 1/(2*pi*C*R), where C is capacitance, and R is the input impedance of the amplifier
Use jEriCOh's simple Excel corner frequency calculator for convenience
9.4.1 Acoustic Dimension
black gate capacitors
9.4.2 Angela Instruments
Angela Instruments: Black Gate
9.4.3 Diy HiFi Supply
Diy HiFi Supply
9.4.4 hificollective
black gate electrolytic capacitors page
9.4.5 parts conneXion
http://www.partsconnexion.com/catalo...ctrolytic.html
9.4.6 Sonic Craft
Black Gate Audio Capacitors
9.4.7 Tang Hill International Audio
thlaudio web site pages
9.5.0 Wire:
9.5.1 navships, head-fi's favourite wire source
eBay Store - John's Silver Teflon Wire Shop: New Arrivals, Kapton Wire, 24 AWG

9.5.2 OK Industries 100' Spool 30AWG Wire Wrap
R30W-0100 White from Mouser
R30R-0100 Red from Mouser
Digi-Key - K397-ND (OK Industries/Div of Jonard Ind Corp - R30W-0100) White from Digikey
Digi-Key - K395-ND (OK Industries/Div of Jonard Ind Corp - R30R-0100) Red from Digikey
9.6.0 Compact Flash to iPod converters (make room for bigger internal capacitors):
9.6.1 eBay store for ehkseller. Look for 1.8" toshiba Hard Drive,SSD, CF to ipod IDE A05 Adaptor
eBay Store - ehkseller: Category 1: 100 RJ45 Crimp RJ11 CAT5 MODULAR Network Crimper
9.6.2 tarkan's adapter for iPod video 5G/5.5G
Store > Tarkan Akdam’s BORED

9.6.3 DealExtreme CF to Toshiba 1.8 adapter
DealExtreme: $5.30 CF to Toshiba 1.8-inch IDE Hard Drive Converter
---------------------------

10.0.0 Capped Docks:

10.1.0 By ALO Audio
RapidShare: 1-Click Webhosting
10.2.0 By CAvanessia
The Apple diyMod: My Take on the Famous iMod [56k killer] Featuring 3G, 4G, 5G and nano 1G!
10.3.0 By EFN
Frankenstien iMod with BIG Balls - V-Caps Franken ShuttlePod is HERE!!!
10.4.0 By stevenkelby
My DIY iMod V-cap "dock" Big pics.
10.5.0 By vvs_75
The Apple diyMod: My Take on the Famous iMod [56k killer] Featuring 3G, 4G, 5G and nano 1G!
The Apple diyMod: My Take on the Famous iMod [56k killer] Featuring 3G, 4G, 5G and nano 1G!
10.6.0 By warrior05
My version of a 5th gen iMod dock connector - with pics(56k beware)
---------------------------

11.0.0 Digital out
11.1.0 I2S to S/PDIF transceiver
S/PDIF output extension for Portable MiniDisc Devices

11.2.0 DIY iPod digital out
DIY iPod digital out
---------------------------

12.0.0 Guidelines
Just some general guidelines. It's no Bible, but good advice to keep in mind. Much of it is compiled from the mishaps from this very thread.
12.1.0 Simplify signal path
The purpose of the mod is to reduce the traffic and congestion between DAC and amp. Keep your wires as short as they need to be, remove SMD resistors, capacitors and inductors that clog your signal. Usually this means the coupling capacitor near the DAC, the inductors near the dock, and the capacitor that comes right after the dock inductor. You may also notice an IC labeled DZP## near the dock. We don't yet know what its purpose is, but if you remove it, you still get sound to your dock.

12.2.0 Secure your wires
Use hot glue to keep your wires from moving. These PCB pads are very delicate, so even the slightest tug could ruin your mod.

12.3.0 Minimize collateral damage
Again, be careful when soldering or desoldering anything. Removing the wrong dock inductor can destroy your iPod completely, so slip ups and twitches aren't all that recommended. You could be paying who-knows-how-much for spare ribbon cables, new click wheels, new screens, etc. Also, use of desoldering braid over that of a desoldering pump is recommended.

12.4.0 Don't lose anything
Some iPods have screws, some iPods have rubber bumpers. Losing anything is a bad idea.
---------------------------

A.A iPod 3G - done by lwaudio @ ipastudio.com, cfcubed

A.B See cfcubed's guide.

Figure A.A
lwaudio opted to implement a high-pass filter according to Wolfson's recommendation. It isn't required for low impedances, ie. 8ohm to 56 ohm. Since we're using amps with huge input impedances, Wolfson recommends it. Check here and here for more information. The C13 is the left signal and C16 is the right. Take the signal from the leftmost pad.


Figure A.B


Figure A.C
Thanks to cfcubed for this image.


---------------------------

B.A iPod 4G click wheel - done by joneeboi, KoKoKrunch, ferds, no_eye_dear

Figure B.A
Money.


Figure B.B
Dock option made available. You want to hit up L2 and L3. L2 goes to R, L3 goes to L.


Figure B.C
KoKoKrunch did the impossible! Caps inside the iPod that can be used with a regular line out dock! Check it out here. Seen below is ferds' diyMod 4G U2 edition.


Figure B.D
To send your signal to the headphone jack, cut the original signal by chopping these traces. Credit goes to vvs_75.


---------------------------

C.A iPod 4G photo - done by vvs_75, KerryKing, no_eye_dear

Figure C.A
Take the signals from the top pad as shown in the image.


Figure C.B
Some of KerryKing's work.


---------------------------

D.A iPod 5G - done by joneeboi, jERiCOh, wgr73, jamess71, pcyl, aaronylee, EightTrack, FallenAngel, Ron.id

D.B See aaronylee's guide.
D.C See wgr73's guide.

Notes: When routing the wires from the chip to the dock pins with insufficiently small hookup wire, you raise the front panel which causes the click wheel to sink in a bit.

Figure D.A
Solder to the bottom pad of the top two caps with the Z on them. The left one is left, and the right one is right. I've measured ~1.5VDC coming out of each.


Figure D.B
Desolder the capacitors underneath L2 and L3, C84 and C85.


Figure D.C
In terms of the green arrows, the top pad is for left and the bottom for right.


Figure D.D
Here is the place from which ground can be taken if a non-dock solution is desired.


---------------------------

E.A iPod mini 1G - ruZZ.il

Figure E.A
There's an interesting discussion going on in Portable Audio about throwing a 32GB flash card into the iPod mini. Add a diyMod while it's open, and you've got quite a potent player on your hands.


---------------------------

F.A iPod mini 2G

Figure F.A
Remove caps C53/C54, remove inductors L7/L8, then remove caps C69/C70. There isn't any room for internal caps, so sending them to line out positions is easiest. The naming of the inductors and caps sits behind the LCD screen. Take the signal from the striped end.


Figure F.B
mini 2G with labels. Shown below is FallenAngel's mini 2G.


Figure F.C
FallenAngel's completed diyMod mini 2G


---------------------------

G.A iPod nano 1G - done by wgr73, ishtob, CAvanessia, vvs_75, powertoold, darkfury18, iQEM

Figure G.A
Don't use C86 and C87 because their volumes are controlled by the click wheel. C53 and C54 are the ones you want.


Figure G.B
Dock option.


Figure G.C
ruZZ.il chose to solder directly to the dock pins, implementing unused pins 14 and 17; pin 7, 9(?), 10(?), 22, 24, 26, 28 are also unusued. Hot glue is highly recommended since the connection is only holding two or three strands of wire. This clever method allows optional use of any kind of docking station without damaging any speakers/headphones. When you want to use the diyMod signal, hook up the diyMod dock, simple as that. Note that transferring line out docks is not recommended unless you know that nothing will be damaged down the audio signal path. Try to prevent the melting of the click wheel connector.


---------------------------

H.A iPod nano 2G - untested

Figure H.A
That Apple branded 66AJSTB is supposed to be similar to the Wolfson WM8750, which should be similar tot he WM8975, according to the iPodlinux site. If anyone is so daring as to slice and dice their nano 2G's beautiful finish for the education of the community, I'm sure at least one person will be grateful for your DIY spirit. If my memory serves me, the 5G's WM8758 was supposed to be similar to the WM8750 when it actually borrowed more from the WM8978. If the 66AJSTB is more like the 5G's in that it shares the pinout of the WM8978, then the pair of caps sitting at the bottom middle of the chip, the ones with the darker yellow colour than the outside pairs, might be what you're looking for. In my experience, Apple has placed the target caps side by side, a fact that helped me figure out the diyMod 5G. If this policy is true, then the left side of the chip (as shown) cannot hold the traces we're looking for. If the 66AJSTB has the same pinout as the WM8978, then that darker yellow pair of caps process the information from OUT3 and OUT4 from the WM8978 datasheet, our target line out feeds. The leftmost dark yellow cap would then be OUT4, right, and the rightmost would be OUT3, which would be the left line output.


---------------------------

I.A iPod nano 3G - untested

Figure I.A
I'm being very theoretical here, but the audio feeds come from the caps sitting snugly side-by-side on the top left corner there, and the line out pins are on the right (in the image). As usual for the caps, pin 3 is the right channel and pin 4 is the left channel. I don't know what the pin configuration for the audio chip is, but if it's anything like the nano 2G, then the left pin is OUT3 and the left channel, while the right is OUT4 and the right channel. This nomenclature is convenient in that it corresponds to the pin numbering that we use.


---------------------------

J.A Zune 1G - untested

Figure J.A
The chip sits underneath the screen, so be careful when diyModding.


---------------------------

K.A Zune 2G - untested

Figure K.A
No one knows what the pin configuration is for the WM8350. I requested a datasheet, but it hasn't arrived in my inbox yet.



---------------------------


Galleries
Observe and admire the different iterations and implementations of the various diyMods shared in this thread.
Gallery 1
Post 4

Gallery 2
Post 7

cfcubed's diyMod 3G
Post 700

lwaudio's 3G
Post 96

BrinNutz's diyMod 4G
Post 801

ferds' diyMod 4G
Post 823

KerryKing's diyMod 4G
Post 694

KoKoKrunch's diyMod 4G
Post 337
My DIY iPod mod endeavour - 10+ huge images - BAMod!

no_eye_dear's diyMod 4G
Post 900
Post 905

aaronylee's diyMod 5G
Post 663

d_w31's diyMod 5G
Post 136
Post 673 Alternate routing

Ramblingman's diyMod 5G
Post 985

wgr73's diyMod 5G and dock
Post 335
Post 834 Second diyMod 5G

FallenAngel's mini 2G
Post 991

joneeboi's mini 2G
Post 584
Post 915

CAvanessia's nano 1G
Post 414

ishtob's nano 1G and CMoy
Post 236

iQEM's nano 1G
Post 408
Post 409

ruZZ.il's nano 1G
Post 372

vvs_75's nano 1G
Post 391
Post 839 Dock number two

wgr73's nano 1G
Post 166

Zune 1G
Post 1043

Zune 2G
Post 639
---------------------------

i.i Revision history
Apr. 29, 08 - fixed OK Industries 100' spool of white wire wrap
Apr. 15, 08 - added iRepair under the "Supplies" section
Apr. 13, 08 - added some capacitor reviews under DIY Resources
Apr. 04, 08 - made distinction between mini 1G and 2G chips, WM8731 and WM8711, respectively.
Mar. 24, 08 - added Zune 1G section and gallery
Mar. 13, 08 - modified Section 12.0.0
Mar. 12, 08 - added Section 12.0.0, "Guidelines"; modified disclaimer
Mar. 11, 08 - added Mouser, Digikey, and Allied as sources for dock connectors
Mar. 04, 08 - added FallenAngel and KerryKing to credit section; added mini 2G photos; rearranged mini and nano sections to follow their true timeline; removed extraneous nano 1G photos
Mar. 03, 08 - added Galleries section; added link to jERiCOh's corner frequency calculator in Section 9.4.0; added Digikey source for wire wrap
Mar. 02, 08 - added links to RapidRepair iPod parts and opening guide
Feb. 26, 08 - added iQEM's completion of diyMod nano 1G; fixed iPod mini confusion; removed dead DIY Resources link
Feb. 25, 08 - added Ron.id's completion of diyMod 5.5G
Feb. 14, 08 - replaced Figure H.A with closeup of C53/C54, L6/L7, C69/C70
Feb. 12, 08 - replaced 4G click wheel's inductor photo with no_eye_dear's shot; added element names to-be-removed in iPod mini 1G; added Figure names
Feb. 11, 08 - added Tangentsoft's article on "Input Capacitors for Headphone Amps;" ruZZ.il's iPod mini capacitor locations
Feb. 09, 08 - added L/R distinction for 3G; recommendation to remove C84, C85 in the 5G; location of signal pads in the 4G photo
Feb. 08, 08 - added no_eye_dear's completion of the 4G photo; darkfury18's completion of nano 1G; update on unused pins in nano 1G
Feb. 07, 08 - added reference to posts on how to pick your capacitors; no_eye_dear's completion of 4G diyMods
Feb. 04, 08 - added ferds' 4G pictures, wgr73's 5G guide, ruZZ.il's nano 1G method, link to DIY iPod digital out thread and vvs_75's 4G trace-cutting image and new dock.

Last edited by joneeboi : 04-30-2008 at 04:27 AM.
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Old 11-28-2007, 09:15 AM   #2 (permalink)
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great post.

I do however, wished you posted a Ipod 5G instead

Really, the recent 5Gs, modding them is not really hard. Afterall the headphone amp is integrated into the CODEC/DAC itself, all you need to do is swap the output caps.
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Old 11-28-2007, 11:30 AM   #3 (permalink)
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Wow, thanks for sharing
I don't see you mentioning breaking the original signal paths, so I guess the lineout is unaffected by this mod. But I wonder if leaving the original paths intact (parallel w/the new lineouts) has an affect on the SQ. Probably no biggie but I'd think that's affect the output impedance the Wolfson sees at least...
Thanks again for great pix, etc.
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Old 11-28-2007, 12:40 PM   #4 (permalink)
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I could have left the lineout signal intact, but that was actually part of the learning process. I was getting some really weird fuzzy sounds, so I thought that if I got rid of the elements at the place of my soldered wires, that would fix it. Turns out I had not properly grounded the stereo jack, so that fixed it. At any rate, I think I disconnected the lineout, but I haven't actually checked. The headphone out does still work, if that's any consolation Will report back after school.

I'm going to try the 5G diyMod for a friend. In the mean time, the rest of you DIYers can take confidence in doing it yourselves. iFixit: iPod, iBook, & PowerBook Parts and Accessories and ifixipodsfast.com have great guides on opening your iPods. ifixit has a pictorial guide, and the guy at ifixipodsfast.com has video tutorials. I couldn't stand listening to his accent after a while though. I was going to take a look at my dad's 5G iPod but he walked in while I was trying to disconnect the LCD screen from the logic board and understandably freaked out. He got a 3-year warranty on the thing, so neither of us wanted to mess that up (I didn't know until after he walked in and yelled at me.) =T

After seeing that picture of the 1G nano, I'm still kicking myself for having given it away. Having a really slim, portable diyMod nano would have been awesome.

---------------------------

Gallery:

CAvanessia's diyMod nano 1G














joneeboi's diyMod 4G




joneeboi's diyMod 4G and d_w31's diyMod 5G


koike's modded iPod 4G


KoKoKrunch's diyMod 4G U2


no_eye_dear's diyMod 4G




powertoold's diyMod nano 1G


Red Wine Audio iMod nano 1G


vvs_75's diyMod nano 1G








wgr73's diyMod 5G and diyMod 5.5G
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Old 11-28-2007, 03:41 PM   #5 (permalink)
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Yeah, you posted the same thing here:

Who's done this iPod mod?

I'm curious as to who's done the mod without having an external "wart" on thier iPod, no offence.

Intresting none the less.
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Old 11-28-2007, 06:04 PM   #6 (permalink)
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Quote:
Originally Posted by oicdn View Post
Yeah, you posted the same thing here:

Who's done this iPod mod?

I'm curious as to who's done the mod without having an external "wart" on thier iPod, no offence.

Intresting none the less.
I did it to my IHP1x0. There's more room in that one.
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