/diy/ - Do It Yourself

>>1579734
I picked up a Kenwood KR-4070 at a thrift shop a year or so back just 'cause it looked cool. Was sold "as is" for $9.99 but it was a sale day so I only spent 7-ish on it. Some times it wouldn't turn on fully, other times I'd only get sound out of one channel. Huge amounts contact cleaner on the inside of the rotary switches fixed the issue. I'd hit the switch with a squirt of cleaner, work it through its range several times, wait for it to dry and power it back on to test. It took a good 10-12 attempts before the problem cleared up completely. Outside of replacing the little lamp that illuminates the analog 'signal' and 'tuning' meters it needed no other work. The caps and such are probably well and truly out of spec after 40 years but it sounds good enough to me that I don't give a shit. It's just driving some old Pioneer CS-99 speakers anyway (which I paid $30 for at a different thrift store because the grills had some damaged and they couldn't test them). One thing that is nice about these old system/speaker combos; they get fucking loud even when outputting very little power. A 40-watt receiver and 80-watt max speakers and it is deafening at anywhere near max volume.

Picture from Google.