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[SOLVED] TP1 TM2 5 volt adjustment

Posted: Mar 22nd, '17, 03:02
by metronome
Hello all,

So good news, I've gotten to the TP1 TM2 5 volt adjustment after hunting down a short in the 5V to ground. :)

Bad news, it's only reading 0.15V. No matter how I turn the 100k trimmer it doesn't move beyond 0.15V. I've checked all of my chips, they're mounted correctly and near as I can tell everything is sold nicely. I don't have a schematic, so I can't trace anything for continuity.

Suggestions would be greatly appreciated.

Thanks!

Re: TP1 TM2 5 volt adjustment

Posted: Mar 22nd, '17, 03:38
by backdoorranky
I wish I could help but I'm very new to all this.

Schematic .pdf is here http://www.e-licktronic.com/en/index.ph ... achment=48

Top layout .pdf is here http://www.e-licktronic.com/en/index.ph ... achment=57

Bottom layout .pdf is here http://www.e-licktronic.com/en/index.ph ... achment=58

Re: TP1 TM2 5 volt adjustment

Posted: Mar 22nd, '17, 03:41
by metronome
Thanks! That's a good start for me...

Re: TP1 TM2 5 volt adjustment

Posted: Mar 23rd, '17, 18:27
by metronome
All of my IC's have power and I'm still checking continuity. ...But my relative NOOB status with electronics makes me wonder if the 5V short may have also destroyed some/all of the IC's? Is that something to consider?

Re: TP1 TM2 5 volt adjustment

Posted: Mar 23rd, '17, 19:07
by lukep_gdansk
It is possible.

Re: TP1 TM2 5 volt adjustment

Posted: Mar 29th, '17, 05:55
by metronome
Solved: Found a broken trace between TP1 R697 and Pin one of IC110