I have op27 siemens display.It restarts after some time and continues to restart again and again after some time interval.I have checked its power supply,it is ok.Can any one tell me how to solve this problem.
I am guessing the internal power supply is defective.
I dont think it is worth trying to repair the old OP27 panel.
If you have the original Protool project, I suggest you migrate to a WinCC Flexible or TIA Panel.