CompuServe Messages

Jim I don't know how much you know about the wiring of the MB on this unit, but I removed the MB and spent some time looking at both sides of it at J500. It dawned on me that maybe the problem is on the underside since the trace that runs from the Gary chip to the one pad of J500 on the underside is broken. Below is an attempt at drawing how I think it should be on the board: J500 A —–[] []– B | | | | | C ? | _________|_____ | | ] Gary | |_______________| 'A' is a thin trace on the board that runs for a few inches. 'B' is a fatter trace that is only about a quarter inch long and does not appear to be connected to anything else. 'C' is a fatter trace that appears to be connected to one of the very wide traces that connect to the power connector The traces labeled 'A' & 'B' are on the top side of the MB, the trace to the Gary chip is on the bottom side of the MB. With J500 shorted, the trace from the Gary chip is connected to the 'B' & 'A' trace, when the J500 is cut, the trace from the Gary chip only goes to where trace 'A' goes. At least this is my impression of how things should be from studying the mother board. In reality, this MB has been modified in such a manner that the trace from the Gary chip is not connected to any of the other traces, regardless if J500 is shorted or not. Also, on the underside of the MB, on the side of J500 the the above 'B' trace is mentioned, there is a square solder pad, should it be soldered in such a way that it is connected to the trace I have called 'B' on the top side? Currently it is not. I hope I haven't lost you on this <G>. =Rick=