[Charlie]

The cleaner was MG Chemicals Super Contact Cleaner. At first, I couldn't imagine this stuff being conductive... but so far, this was the only theory I could come up with. That sync socket was the only one I sprayed... and it was the only one I had screwy readings at. Also, it did look like an oily residue was there around the socket area... which made me think this spray was the culprit. I couldn't come up with any other ideas of why I was getting conductance thru two points that shouldn't have any... although I'll be glad to entertain ideas or theories if anyone has any!

Yes, all connections were removed from the trace. If I remember right, the trace I was using was at pin 3... and there were only 3 connections... so it was pretty small. When I would check readings from that point to other places... including chassis ground... I was getting readings. This particular trace wasn't too far from a ground... perhaps a half inch or a little more... and the ground trace nearly goes around the entire board.

I've been using this same brand for a couple of years... never had a problem before. For applications such as this, I think I'll start using spray that does not have oil in it. I usually keep both types on hand, but havent been down to the parts house in a while. I'll make sure to go this week and get some.

No, didn't look like any carbon residue on the board there in the sync area.... although some other areas on another board look like they've been cooked thru the years.

Since that post, I've been applying alcohol to the area with a q-tip and letting it dry.... then go back and do it again. Now, a couple of hours later, I'm not getting any resistance readings like before... now I'm getting readings around 20 megs where I was earlier getting 200k. I'm gonna keep applying the alcohol since it seems to be helping.