Guessing at the problem isn't going to cut it and can get expensive fast.
First do you have a volt/ohm meter?
Second post the equipment actual model number from the serial number tag. You could a rider or ZTR as far anyone knows.
Members here have all lost the physic powers due Covid-19 so they need the info to look up your electrical schematics.
Even my transporter is on the blink but Scotty is working on it but the dang Klingon keep shooting at my ship and the shields are more important right now..Darn it, warp drive just went out.