Problems with U1/3 pin 4 voltages.

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Problems with U1/3 pin 4 voltages.

Postby atiller » Tue Jul 01, 2008 2:24 pm

Hi all,

On my second C84 now. First one tests out all okay, but this second one I'm having a bit of an issue with.

U1, pin8 measures fine at -14.4V, but pin4 is giving me 10V for some reason. Same thing with pin4 on U3. I've been trying to find a short or a misaligned cap/transistor/diode but I just can't seem to find anything!

Any tips would be greatly appreciated.

-Adam
Last edited by atiller on Thu Jul 03, 2008 5:37 pm, edited 2 times in total.
atiller
 
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Postby atiller » Tue Jul 01, 2008 3:00 pm

okay well, i think i've solved it. well, my friend solved it.

appeared to be a cold joint on D16 that was making me lose my negative rail!
atiller
 
Posts: 36
Joined: Mon Jun 30, 2008 8:23 pm


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