The Apple diyMod: My Take on the Famous iMod [56k killer] Featuring 3G, 4G, 5G and nano 1G! - Page 79

OK, so basically I turned off the ipod, connected the battery and checked the voltage on the ground ptn with the wire attached, it read: 3.99V (It says it's rated 3.7V on the battery).

So i disconnected the wire and checked the voltage again (with the ipod stilff off), still 3.99V.


Here's a pic of the wire:



I did the same for this newer 4th gen I bought, and the same thing occured.


Not sure which other ptns to check for?


thanks

Grats man!

Did you get a nice deal since the new one is announced?

hi,

i did cut the wire, so basically it was connected to nothing and still same results.

No I didn't change

Before modding it, the battery went smooth.
After modded, it still worked fine until the battery drained. And I recharged it, without success. Still can't guess what happened

i never rockboxed my ipod, so i dont think it's that issue.

very strange this is a re-occuring problem.


could it be because people are trying to burn in the BG caps by having a power soruce plugged it constantly to the ipod


will await your results joneeboi.

Hi all. I've been planning to do this for a long time, and seeing as it seems like a very worthy player which can be gotten for a total of (hopefully) less than $100, I think I'll go ahead with it. I've read the first few pages (there is a similar diagram to the one I'm going to post on page 3 I think, but I have additional questions which I think aren't answered.

Is this all that is needed? The lines represent wires and the red marked cylinders mark the caps. The negative ends of the caps will then go to the respective terminals on the 3.5mm jack which is to be plugged into an amp. Where would I ground this 3.5mm jack? Do I need to run a third wire from somewhere (built in headphone jack?) else?

There is no difference between using the big yellow ones and the smaller black ones other than one being controlled by clickwheel volume? Looks like the yellow ones are easier to solder to. The things (part with the Z or the yellow ones) don't need to be un-soldered either I assume?



From reading some other posts, I could alternatively push the new signal into the headphone jack or line out, and then connect a custom mini-mini or LOD with caps inside to the amp? This has no advantage though right? I'm assuming by making a third set of wires out of the side of the iPod nano case leaves the line out port and headphone jack in perfect usable operation (i.e. unaltered).

Cheers. If you are selling any iPod nano, please contact me as well

Also, if I'm totally off the track with the method (I think it sounds too simple considering Vinnie charges a crapload for his service, even minus the lifetime support he gives you) please tell me.

EDIT: I'm hoping to achieve something similar to this (in that there is an extra set of wires from the side):
http://i98.photobucket.com/albums/l2...withps15pj.jpg

I've been planning on doing this mod for a while now; I already have the BGs ready to go. However, I'm a little nervous with the development about the battery not charging correctly anymore. I don't have time to browse the 118 pages in this thread, so could anyone summarize the problems that others have had with this mod when done correctly? I'm assuming that syncing and charging via the computer is completely the same as without the mod. I'm also assuming that this mod will mean that the ipod can't be used with a FM transmitter in the car anymore (no big loss there; I used it mainly for charging while on the road). Any other issues I should consider before attempting the mod?

I recommend taking the time to read the whole thread. A lot of the information may not be relevant to your particular project, but you will gain a broader understanding of the concepts and theories behind this mod. You're asking questions that, had you read the entire thread, you wouldn't have to ask.

I'm not trying to be a jerk, so I will address your questions at the risk of you ruining your iPod by not understanding what you're doing.

If done correctly, people don't seem to have any problems with their iPods. This battery issue on the last few pages is a recent issue, and I'm not sure it's related to the mod. It could be coincidental. We don't know yet. You are correct that syncing with the PC and charging are unaffected. Since you do understand this, why do you think your FM transmitter will no longer work? I doubt the dock connected FM transmitter needs the coupling caps. It's not an amplifier really. It's a modulator, like half a modem :P

I simply don't have time. I completely understand the basics of the mod, and don't have any problems with that. I can't see what issues could arise from the mod being used, which is why the battery problem scared me a bit.

Stray DC voltage. I assume (I haven't looked at any schematics or the like for transmitters) that the L/R audio out in the dock are used by the transmitter to broadcast the signal. I figure that either the excess DC voltage will damage the transmitter itself, or the DC offset would be broadcasted along with the signal, making it pretty much useless. Like I said, this isn't a problem really, because the only thing I use the FM transmitter is for charging or listening to ESPN podcasts :P

I'm also assuming that this mod (for a 5.5G ipod) would render the headphone out useless, as the L/R signal from the DAC is cut off from the rest of the circuit by removing the capacitors just outside the DAC. EDIT: Just read this wasn't the case. Nice!

So, long story short, no one has reported any other problems other the possible recent problem with the battery?

I wonder if some of the problems with battery life are due to damage (likely ESD damage) to chips on the board. It's possible to cause just enough damage to significantly increase the current consumption of an IC, but not enough to cause a functional failure.

hi,

just to clarify, the DIY imod (4th gen) I have has no problem charging!

It just seems to de-charge (sp?) the battery when the ipod is turned off.

If I unplug the battery after charging it, the battery holds charge fine