Just wanted to give a thanks to my fellow users in this thread. Excellent information and detailed readings for both good and bad boards, suitable MOSFET for QB6 and pictures. I had no power on or LED and no current draw which ended up being the same FET and once replaced system powered up and is running like a champ.
Note: The FET wasn't broken loose from the board and looked normal under the scope whereas others had it pulled free or not adequately soldered. It read open on QB6 pins 123 and 4 using resistance mode (not continuity mode).
Thank you!
Note: The FET wasn't broken loose from the board and looked normal under the scope whereas others had it pulled free or not adequately soldered. It read open on QB6 pins 123 and 4 using resistance mode (not continuity mode).
Thank you!
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