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Build help and troubleshooting => CP554 Diode bridge compressor => Topic started by: ktziavos on October 17, 2023, 12:49:55 AM

Title: Suddenly no output! Help please
Post by: ktziavos on October 17, 2023, 12:49:55 AM

Hello to all! 
I recently built the cp554 compressor. Everything working perfectly until yesterday!  suddenly no sound when it is on. The light is ok. The measurements from the V+- and the the bias are ok. Please where to start searching?? Any thoughts? 

Title: Re: Suddenly no output! Help please
Post by: JPK on October 17, 2023, 09:23:16 AM

Send a constant sine signal to the input and check if you can measure it with your AC voltmeter on TP1 and TP2, against 0V.
It must vary in level with the input signal and the compressor makeup gain.