The Rebel
Active Member
Howdy. I have a nice looking CR-640 that I've just had the chance to open up after a period of it sitting on my stash table. Popped the lid, and cleaned it up a bit, it wasn't bad at all. Plugged it in and hit the power button. It "lights up", but that's it. No relay click. I have read a few posts on these receivers and have seen a couple of videos on you tube. One guy says his receiver did not click in until he "adjusted two pots" on the main board, and replaced one diode. He never got into that procedure in his video to let the cat out of the bag as to what he actually did to it to get it going again.
So I got the manual out and proceeded to check DC offset on TL, and TR on the main board. I got a reading of -143.7mv on the left(TL), and a reading of 31.8v on TR. I was able to adjust TL to 0v, not so lucky with TR, as there is no change when I turn the pot for DC-R.
At this point, I'm in need of direction on what to look at next. Any help from the Yamagods will be greatly appreciated. Thanks.
So I got the manual out and proceeded to check DC offset on TL, and TR on the main board. I got a reading of -143.7mv on the left(TL), and a reading of 31.8v on TR. I was able to adjust TL to 0v, not so lucky with TR, as there is no change when I turn the pot for DC-R.
At this point, I'm in need of direction on what to look at next. Any help from the Yamagods will be greatly appreciated. Thanks.
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