Got a weird one with a 90s Otis in an Atlanta office building

I was on a service call for a door issue, but the car kept drifting about an inch after leveling. Checked the brake and it was fine. Turns out the old brake coil was getting just enough voltage to hold, but the rectifier on the controller board was starting to fail and letting AC ripple through. Swapped the board from my truck stock and it sat dead still. Anyone else run into a failing rectifier causing a slow drift like that?

3 comments

3 Comments

olivia67024d ago

That's actually a pretty common failure mode on those old boards.

carr.abby24d ago

Makes sense. My old board failed in the exact same way, just after I'd bragged about how reliable it was. The timing was almost impressive.

davis.olivia24d ago

Funny how that works, right? Used to swear those older models were built like tanks. Then I saw three of them fail the same week, all with that same timing issue right after a power cycle. Makes you wonder what finally gives out.