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Old 29th November 2010, 09:36 PM   #31
diyAudio Member
Join Date: Nov 2010
Originally Posted by M Gregg View Post
I have to sign off now!

I am sure there will be others who will carry on! Catch you later!

M. Gregg
Thank you very much for the help!
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Old 8th December 2010, 12:34 AM   #32
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Join Date: Nov 2010
The unit finally started acting up again and there is a corresponding voltage problem from the PSU

Input 220 vac

output 226 on the - rail
output 23 on the + rail

The + rail during normal operation produces 222

There is the problem!

When taking the PCB out to take more measurements it started working again, so i couldn't narrow it down.

I'm guessing I can track the 'bad' AC voltage back into the power supply, see where it changes (at what component), then replace that bad component?
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Old 8th December 2010, 01:09 AM   #33
pedroskova's Avatar
Join Date: Dec 2002
Location: C'ville VA, USA
...bad solder joint on the "+" side in your psu?

What happens to your circuit if one or both of your zeners goes on the fritz?
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