Your absolutly right"Why Not?". The little experience I have with overhauling these PC-Boards leaves me with some questions. Like ya'll were saying earlier about exact part # replacements not being all that necessary, what do we substitute for the SE4002 transistors. I dont have the exact NTE-123 on hand, which of the ones I do have are a good replacement 2N2222,2N5088, 2N5089,2N3565 and 2N3567. I do have on hand the exact replacement part # for 2N3638. I've got new caps (electrolitic type), but unlike the ones in the board there is no + mark on them for correct placement. Some of these new caps do have a white mark down one side and I believe one also has -signs running through the white mark to indicate to me the negative pin. The problem is what about the ones without the - sign running through the white mark? I know the resistors are carbon comp resistors (all 100 of them), whats the chance of a resistor giving me these problems? With ya'll's experience, would it be safe to say that the problem is in a bad transistor or cap that would cause this problem? STEVE C