Originally Posted by Capn Dan
BDW94 is a transistor and yes, it is part of the clutch circuit. Remove it and you can test it with a diode tester or better yet, just replace it.
Capn Dan, i will take your word for it that it is part of the clutch circuit.
i don't have a schematic for the ST7000. thanks for the info.
If there are five heat sinked transisitors chances are that 4 of them
for the ram and the fifth one is possibly the main driver
for the clutch. I was going to suggest he ohm out the clutch
wire to the collector and emitter (or possibly Drain and source)
of each of the power transistors to see if one is the
control for the clutch. If the BDW94 is only diode sized could it be the
driver for the power transistor for the clutch? If you have anymore
it would be appreciated. Fixing a board remotely
with no schematic and no hands on is tough. My fear in replacing the transistor is that if it is a pre stage to the main driver it will just blow
again instantly if the final driver is shorted.
I have jury rigged a surprising number of them at sea for people but
i carry necessary parts
, a scope
, and instruments so this way is like shooting in the dark.
can you read the numbers on the power transistors?