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That old timer who told me to replace the caps before testing anything on a 70s receiver...
Back in 2019 I got a Marantz 2230 from a garage sale for $40. Plugged it in, got some sound but it was all scratchy. Brought it to a guy named Pete who ran a repair shop out of his basement in Akron. He said "replace all the electrolytic capacitors first, don't even bother testing it until that's done." I thought he was just trying to sell me parts. So I spent 3 weeks chasing bad transistors and cold joints. Finally gave in, replaced the caps, and the thing worked perfectly. Has anyone else had a mentor give advice that seemed like overkill but turned out to be exactly right?
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oliver52328d ago
Hold up, you really think swapping every single cap before troubleshooting is the right move? That's like replacing all four tires on a car because one has a slow leak. Tbh, I've fixed plenty of old receivers by just swapping the power supply caps first and checking for ripple on the output. Chances are, if the audio path caps are bad you'll hear it right away with a simple signal trace. Going all-in on a full recap before you even know what's wrong is a waste of time and money if you ask me. Plus, desoldering 50+ old caps risks lifting traces for no good reason when only a few might be the culprit. Ngl, that old timer's advice works fine for someone who doesn't know how to narrow down the issue, but it's overkill if you actually understand what you're doing.
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oliver52328d ago
Wait, did Pete actually tell you to replace ALL the caps first? Usually you just swap the power supply and audio path caps before testing.
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