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Build help and troubleshooting => CP5176 FET compressor => Topic started by: sdiazmun on April 10, 2022, 01:31:07 PM

Title: Need help with 2:1 to 20:1 ratios
Post by: sdiazmun on April 10, 2022, 01:31:07 PM

Hi!!

I have a CP5176 compressor, but the ratios 2:1 to 20:1 not work. The signal seems pass without compression. 
The AC levels on TP3 are 0V except for SLAM ratio that is 6.6V.
All the other levels are OK.

When I meausured the V+/V- voltage, maybe did some cortocircuit with the tester pin and some smoke came out of one of C31/C32 capacitors. Could this be the cause of this problem?

Thanks in advance!!!
Regards

Title: Re: Need help with 2:1 to 20:1 ratios
Post by: JPK on April 11, 2022, 12:08:54 PM

maybe did some cortocircuit with the tester pin and some smoke came out of one of C31/C32 capacitors
Are the power voltages still OK after that (setup guide step 4)? If OK then it shouldn't be an issue. You probably got smoke from R56 or R57.

The AC levels on TP3 are 0V except for SLAM ratio that is 6.6V.
You must check your solder joints on SW1, U1, U2, R27 to R44.
 You can also check that the DC voltage on TP3 is 0.