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Slow loris revision problem...

Started by BraindeadAudio, May 12, 2012, 05:42:45 PM

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mgwhit

Yeah, your voltages are still wonky, though.  Here are mine:

IC1
1: 8.89
2: 4.56
3: 4.14
4: 0
5: 0.01
6: 4.57
7: 9.53
8: 4.64

Q1
G: 0.10
S: 1.00
D: 9.53
C:

After I get my kid in bed I'll look at yours again and compare them to the schematic and see what the problem could be.

BraindeadAudio

Thanks! Its confusing me because I got one of them working and it has the same readings?

BraindeadAudio

any ideas? still got one acting up

mgwhit

Which of the original two did you fix?  How did you fix it?

Are the voltages on the currently malfunctioning one the exact same as the voltages you already posted?  Can you post good photos of the board and the wiring?

BraindeadAudio

This is a bummer, but the culprit are bad ICs from small bear. Anyone ever have any luck with returns/defective parts from them? It gets power and sound going into pin 3 but nothing coming out using a metal can LM308AH and I also got a bad LM308AN. I swapped out op amps with another one and bang lit right up for me. I rigged up an audio probe and used that to test it out since the DMM was saying everything was getting power and I wanted to see where it was going dead so I followed the schematic point by point and found the sound going dead on the IC. Beat.