andrewb
Well-known member
When you say you rebuilt the brick and AR, what did you replace? Are you measuring the same brick voltages as before?
Regarding the board not running consistently, get a can of DeOxit and a fiberglass scratch brush (both on ebay), and remove all socketed chips, clean the legs with the brush, treat the chip legs and sockets with DeOxit, and reseat the chips a few times, to break up any corrosion on the legs and sockets.
It sounds like you have an intermittent connection, and the most common place for that to happen is with bad or dirty sockets, which a majority of boards have (and which is why I always replace them all, on the boards I overhaul). You don't want to start chasing other possibilities until you rule out the sockets.
You can also use a Dremel with a wire wheel on the legs, which is much faster, if you have one. That's how I do them now, but I used to use the scratch brush.
For the DeOxit, I spray a little into a bottle cap, then apply it in the sockets and to the legs with a small artist's paintbrush, to prevent making a mess, as the can sprays it too strongly.
Regarding the board not running consistently, get a can of DeOxit and a fiberglass scratch brush (both on ebay), and remove all socketed chips, clean the legs with the brush, treat the chip legs and sockets with DeOxit, and reseat the chips a few times, to break up any corrosion on the legs and sockets.
It sounds like you have an intermittent connection, and the most common place for that to happen is with bad or dirty sockets, which a majority of boards have (and which is why I always replace them all, on the boards I overhaul). You don't want to start chasing other possibilities until you rule out the sockets.
You can also use a Dremel with a wire wheel on the legs, which is much faster, if you have one. That's how I do them now, but I used to use the scratch brush.
For the DeOxit, I spray a little into a bottle cap, then apply it in the sockets and to the legs with a small artist's paintbrush, to prevent making a mess, as the can sprays it too strongly.