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Topic starter
07/05/2026 11:12 pm
I've got a tac32t with a green drive that keeps giving me a 757 fault DC PS low. I have check the voltages from the PEA power supply and they all seem correct. 33, 15 -15 and 3.3. It doesn't pop immediately on start up but as soon as I try and move the car. Is there a communication link I'm missing somewhere or could it just be the internal power supply goes week when under load?
Thanks, Wes
Thanks, Wes
08/05/2026 4:43 am
This is kind of common on these. Unfortunately the fix is to replace the drive. Supposed to be coming up with a field replacement procedure for the power supply in the PEA but I haven’t seen one yet.
Topic starter
28/05/2026 12:38 am
I guess it’s a really common problem. Just had a second unit at the same site go down with the exact same faults but this one also has a 714 3phase in tolerance<75% nominal-Rect
28/05/2026 7:38 am
Hey not to try an hijack this thread, but I had to go out to a tac32t that I guess was faulting out on a fault that said the car was slipping through the brake so I brought 125% load out to do a brake test. They are fairly new cars and just came off the original contract with tk and they already had to do a drive in one or two of the 3 cars. Brake test went fine and that wasn't the issue, but I did notice a 200fpm car with full load only would go 98-99fpm in the up and 200 in the down. Is that normal for those cars
Last edited by Bowtiedrooster16; 05/27/26 11:39 PM.