Sound Skulptor forums
Build help and troubleshooting => CP5176 FET compressor => Topic started by: corwin812 on September 23, 2022, 06:43:29 AM
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Hello, I just got finished putting the CP5176 kit together. When I tried the set up it failed to change the output upon adjusting P6. Input voltages are +/- 15.6V as expected and -5.45 V is measured at TP7. Upon further investigation, the DC voltages check out fine at the test points of A to G. However, I am measuring about 40 mV DC on L1. The output AC voltages from TP3 are much higher than expected with a 100 mV signal at 1KHz.
Outputs are as follows:
Ratio 2, 2.8 V
Ratio 4, 5.7 V
Ratio 8, 9.8 V
Ratio 12, 11. 4V
Ratio 20, 12.78 V
Slam, 12.8 V
No AC voltage can be registered for any ratio on TP4 or pin 1 of JMP1.
Looking for some advice where to look next.
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Spent some time checking all components, reflowing a few points and added some electrical tape on the underside of the case where the front panel sits. Everything works fine now. Must have been a short somewhere. Setup was a dream and it sounds great!
Thanks.
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Congratulations!