JohnA Posted November 15, 2023 Share Posted November 15, 2023 What is the most likely cause for my '70s SS receiver popping/putting with the volume at zero and no input? It started this over the weekend. It was recapped 4 or 5 years ago. Quote Link to comment Share on other sites More sharing options...
OO1 Posted November 15, 2023 Share Posted November 15, 2023 .failing , aging semiconductors + related parts , defective , worn out , switches relays , potentiometers , Quote Link to comment Share on other sites More sharing options...
CWOReilly Posted November 15, 2023 Share Posted November 15, 2023 Sounds like something else went bad. Probably a resistor, transistor, or a bad solder joint. Quote Link to comment Share on other sites More sharing options...
JohnA Posted November 16, 2023 Author Share Posted November 16, 2023 A lot of stuff in these old receivers is no longer available, the output chips in particular. Quote Link to comment Share on other sites More sharing options...
babadono Posted November 22, 2023 Share Posted November 22, 2023 Clean the pots and switches is ALWAYS the starting point. Quote Link to comment Share on other sites More sharing options...
Vince1966 Posted December 1, 2023 Share Posted December 1, 2023 in alot of 70's-80's sansui there as 2SA726/725 Transistors that make odd pops and hissing as they age. I have a list of 20 remove on sight Transistors because of break down issues and noises. this also goes for most vintage audio from that era. clean the switches and Potentiometers first, you have ruled out capacitors. 1 Quote Link to comment Share on other sites More sharing options...
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