I recently acquired a contract that has several Schindler 300A 2 stop hydros. In less than a month I have had to replace the relay board on one and both the CIO and MIO boards on another. The one that I replaced the IO boards on would call and run from the second landing, but when you tried to go from 1 to 2 in auto, it would fire up for a split second and then fault out with a photo sw error and beam sw shrt message. All the photo switches were working fine and the freedomware tool that I have for the unit said the IO's were firing high and low just fine. Is this a normal problem with these controllers. Do they have a tendency to blow boards out. The CIO board looked like it had been on fire. Any insight would be great

biggest problems I've had on these is the power supply

Me also. Make sure you have a solid 24VDC and check the AC noise on it also. Most are adjustable.

Yeah Ive already been through the things on the power side. Doesnt seem to be any fluctuation on any side of the power. All the poles seem to measure the same on the AC and there arent any spikes or lulls. Makes me shake my head. and we all know how proud of their parts they are over there.