Hello again, Been slowly getting a MTH New Haven FA-2 ABA set with Proto 2 5V system fully rebuilt to hit the rails again.
Model number: 20-2238-1
Last piece of the puzzle is the trailing A unit's smoke unit not heating up. I rebuilt the smoke unit with a new motor and it spins great, but no heat is made at all. Closely looking at the slave board, the left leg of the smoke FET has some white discoloration.
Testing either smoke resistor solder pad, to any of the smoke unit Phillips screws DOES draw about 8 ohms.
If I disconnect the 4-pin harness (with purple smoke wire), the short goes away.
The oem heating elements are in great shape and ohm out correctly to 8 ohms (2x smoke resistors together).
Does this sound like a cooked smoke FET? Part: 3055L SOT-223?
My last question, can I test a ps2 5v slave board independently on my mth ps2 test fixture set?
Thank you for reading, and the help! The wealth of knowledge here is incredible 
