I went ahead and bought the kit. Replaced 6 FET's and 2 IC's. The set powered up and immediately blew 3 of the FET's then the fuse. The buffers didn't show any shorts but there must be one or more shorted somewhere. Time for a new Y-Sus.
.. always turned out to be a nightmare. It seemed like a 50/50 proposition as to whether the X board output might also be dead causing the Ysus to way over forward-current the panel. Yet since he... more