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SE/30 with odd "clicking" sound when mouse is moved

jwse30

6502
I have an SE/30 motherboard. When I use this machine for about 45 minutes, the speaker will start making a clicking noise whenever the mouse is moved or clicked. If I scroll on a window, it will click continuously while I am scrolling. I saw an old post on here about someone else having the same problem, but I cannot find it anymore, and it didn't have a solution to it or any suggestions.

The board was recapped about 7 years ago, and I am using a second motherboard in the same machine and it is not doing this. The clicking occurs on the internal speaker as well as with headphones. I do not recall if this problem existed immediately after the recap or not, though I remember looking it up in the past at some point. I also recall posting a question about it on a forum, but I can't find that now. I seem to remember someone suggesting that the flyback transformer was defective, or maybe that was in the Dead Mac Scrolls.

Anyone have any suggestions as to where to begin? Thanks,

J White

 
Sometimes in the middle of the night i hear clicking noises and i dont know were its coming from. Its probably all in your head. Seriously though see if its the speaker or the motherboard

 
Thanks for the advice; I had swapped motherboards and determined the problem was on the first motherboard. Anyone have any ideas where to look to try to pinpoint the problem on the board? I'm hoping it's a cold joint on one of the caps, but don't know where to begin to look.

Thanks,

J White

 
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