Yamaha CA-2000 recap

My amp suffered from crackling noise on the left channel. I performed a full recap- replacing the old capacitors (including the cheap capacitors the previous owner added) with nichicon muse KZ, ES, and FW depending on the size. The ones on the center amp boards with heat sink were replaced with normal grade nuchicon caps because I couldn’t find audio grade cap for 1uF 80V (eight in total). I didn’t replace some non polar capacitors because I failed to notice the NP symbols when purchasing the caps. After the recap, the crackling noise was gone, and it seemed to sound somewhat better but I am not too sure (no AB comparison and I didn’t listen to it everyday either.)..

Recap

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Aiwa XK-009 overhaul

I won the yahoo auction for the legendary Aiwa XK-009 at about 45000 yen. It is considered to be the very best aiwa cassette deck from aiwa. Although it was working, as expected, there were some issues. The biggest problem was that it suffered from unusually high w&f, which was very audible. The previous owner installed the belt in a wrong way - the belt was wrapped around a screw. The belt was left with some rails-like groves. This deck is very sensitive to the belt. So I ordered a new set of belts from fixyouraudio. It was not the best belt for this machine (the best ones are from a website called something communication). I always ordered belts from fixyouraudio. I always had good results from them and expected no difference this time. The aiwa xk-009 was quite a pain to take apart. I took apart most of it except for the fast-forward/backward mechanism, which does not affect the performance. I removed the old oil and applied new oil (crc lubricant). The all belts were repla...

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A Quarantine Hotel in Xiamen, China

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