took apart trucks, cleaned wheels and rollers, (again) and axles, very little black crud came out/off surprisingly, checked wires on trucks, lubed up worm gears, continuity between rollers is good.
If this was a bad or cold solder joint, wouldn't just one motor shut down and not both? Its acting like its loosing the hot, (or common) but I cannot see it loosing power from both rollers at the same time........will check where power goes to board next, then out to motors.
Yes, know what a bridge rectifier does, just dont have 4 diodes handy, will borrow some from work on Monday.
