This is an lcd display used on ebikes.
long story short, there was condensation inside the unit.
I opened it and thoroughly cleaned the pcb with isopryl.
The board had no visible corosion.
It powered on fine and was tested for an hour or so.
However when connected to the bike,,it did not power on at all.
I took it home and reopened it to take a look. There are no shorts based on MY testing.
However,,when I probe the transistor and the mosfet gate in diode mode or contuinity mode, (one probe on transistor collector and one probe on mosfet gate}the unit...
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