Quote:
Originally Posted by kx250rider
It's not the relay... It's the input choke next to the relay, vibrating at 60 cycles! The first time I saw that, I went round & round also. The core is busted loose inside. You can either break it open and fill it with silicone, or replace it with one from another set.
On the Mitsubishi sets in general from the late 80s to the mid 90s, the caps are all bad. Especially the surface mount ones on the sets with PIP modules. And as other point out, that yellow glue that turns hard & brown, eats right through the dielectric coating on the board, and is 100% conductive. What a mess! I hate working on those, and they're trouble unless you remove ALL of that glue, and also replace a big bunch of caps. Great performers though.
Charles
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That indeed was the problem with mine! It's so close to the relay that it made me think that the relay was making the noise. I installed another choke from a junk chassis and it's now quiet. Now, I've got to replace the leaky caps.