Guvernator - No juice to clipping diodes

S

Spiff4565

Member
The LED indicator lights ups just fine, but after that everything seems to go south.

Here are the vital signs -

TLT72 Leg 1 = 15 mV ~. Ranges from 12mV to 16mV
TLT72 Leg 7 = 1 mV
D2 = Anode 3.3 mV
D3 = K 3 mV
D1 Input = 9.45 mV
D1 output = 85.4 mV

No sound when circuit is engaged.

Strange that I get readings on D2 A and D3 K.

All in all I think this is royally messed up.
 
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Resistor values are fine from what I can see. Obviously can't determine the caps, can we see the other side and your offboard wiring too? Power is definitely wonky somewhere with those voltages
 
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jwin615 said:
Are those mlcc or tants?
And where the hell are your pots? You have to have pots installed.
What's the voltage with black lead on IC1 pin 4, red on pin 8.
So many questions...
Click to expand...
Pin 4 - Pin 8 = -67.04 mV

The caps are MLCC

I hooked the pots back up, reading 9.45V on A and K of D2 and D3.

No signal passes when circuit is engaged.
 
Last edited:
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It sounds like your DC is inverted or your 9v is shorting to ground.
Pull the 072, apply power and check pin 4 and pin 8 again. You should have 9v potential Between those points. If you don't, you have something shorted to ground.
 
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