Head-Fi.org › Forums › Misc.-Category Forums › DIY (Do-It-Yourself) Discussions › FrankenZERO - A bang for buck exploration with a DIY Heart !
New Posts  All Forums:Forum Nav:

FrankenZERO - A bang for buck exploration with a DIY Heart ! - Page 13

post #181 of 427
12/27/08 at 1:14pm
There is this power cap 47uF 25V just right beside the power supply socket. That cap gives the supply to the 3 units of DAC power supply cap (which is +5V).

For me, I bypass that 47uF25V cap with green sausage.

Remember the DAC power supply cap is very critical in the signal supply path.

I used Nover for the DAC power supply cap.
Reply
post #182 of 427
12/29/08 at 2:28pm
did someone measured the voltage on the 2200/4700uf CAPS ?
I have 4700uf supported only 10v and i'm not sure if i can put them on my zero.
Reply
post #183 of 427
12/29/08 at 9:27pm
Please dont put that in.

The voltage across that cap is about 25~27 volt.
Reply
post #184 of 427
12/29/08 at 9:59pm
thank You for the answer, i'm surelly not gonna put these caps in this case , so i will look around for a 25v/35v caps.
Reply
post #185 of 427
12/30/08 at 9:54pm
U cant use 25V either.

In HIFI, there is no point trying to save a penny which later can lead to problems.
Reply
post #186 of 427
12/31/08 at 1:12pm
so why on first picture in this topic ( phase1 power supply section ) is written: "replace with 4700uf Nichicon 25v, than bypass..."
?
Reply
post #187 of 427
12/31/08 at 7:00pm
Thread Starter 
I measured 21V across the bank of diodes on mine and my line V is rather high at 127V 60 hz AC. 25V cap in that spot is perfectly OK. All Zeros use 25V (2200uf) rated mains filter caps... If it makes anyone feel better than 35V is also fine but once you get above that they get too large in size. A general rule of thumb is to not exceed 50% of nominal V rating for a targeted location for upgrade...either match the V rating of the cap you replace or go a little higher...not go crazy at 100-200% more.........other issues arise when you go down that road...one mentioned previously the other you can look up online.

Happy New Year everyone !!!!!!

I have to go get ready for this evenings events....


Peete.
Reply
post #188 of 427
12/31/08 at 9:48pm
Hi PP

Happy new year to you. Have u remove the bypass cap to the silmic II ? Please try and see.
Reply
post #189 of 427
1/2/09 at 11:50am
Hi PP,

I'm new to this forum, but owning a Zero since feb 2008, left aside as not completely satisfactory...

I would be interested with your upgrade kit if still available ...

Has someone found a simple and satisfactory way to hook the Zero to a USB PC outlet ? (presently using an EMU 0404 USB DAC box, very satisfactory, but I need a second system...)

Thank you !
Reply
post #190 of 427
1/2/09 at 10:43pm
Thread Starter 
sadhill PM me about the kits.

Peete.

PS CC...nope I haven't pulled the bypass caps from the Silmic II's. You are talking about the 4 coupling caps right ? I haven't touched my Frankie for quite sometime now...(LOL...sounds kinda funny).
Reply
post #191 of 427
1/2/09 at 10:50pm
Quote:
Originally Posted by Pricklely Peete View Post
PS CC...nope I haven't pulled the bypass caps from the Silmic II's. You are talking about the 4 coupling caps right ? I haven't touched my Frankie for quite sometime now...(LOL...sounds kinda funny).
If it ain't broke, don't fix it!

Ohhh, forgot what thread I was in !!

Nevermind!
Reply
post #192 of 427
1/3/09 at 10:52am
The 4 coupling cap (two of them actually ) serves to block DC and so the connection is in series. Oops. I need to confirm the green sausage in series mode. I was thinking mundorf 0.1uF .
Reply
post #193 of 427
1/10/09 at 3:41pm
does the direction of PIO's legs matters?
None of them is signed as + or -.
Im asking because on underside PCB i saw different soldering between Peet's and someone else photo.

i've marked differences in blue circle


Reply
post #194 of 427
1/10/09 at 8:35pm
It doesn't matter, film caps and PIO caps like the k42y-2 are non polar.
Reply
post #195 of 427
1/10/09 at 8:55pm
God bless You ;]
Reply
New Posts  All Forums:Forum Nav:
  Return Home
Head-Fi.org › Forums › Misc.-Category Forums › DIY (Do-It-Yourself) Discussions › FrankenZERO - A bang for buck exploration with a DIY Heart !