2203 Woes ....What is That Noise ?

sct13

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That’s re done… as of Saturday night..

This was my first ever big project…12 or so years ago… I’m not an amp tech…

I got better … I promise..
 

rockgod212

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sounds like 60cycle hum. check all solder joints and cap cans
 

sct13

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Thanks … I found a few questionable solder joints and I tested all the electrolytic cap with my Esr meter and all of them were in spec according to the chart … but I’m ordering new ones and I’m going to re cap it anyway… the present ones are more than 15 years old…while I’m in there I’ll recheck more solder joints and reflow them …

Thanks for the reply!
 


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