Troubleshooting 1. First, provide the photos of the original remote control to confirm whether it was bought wrong. 2. If the indicator light is not on (no display on the display screen), check whether the battery contacts the positive and negative poles (or replace it with a new battery)...
I'm trying to repair a Hitachi LCD television. It's an ultravision, model number L42S504. I followed the troubleshooting procedure in the service manual, and it says to replace the mainboard. I made some attempts to repair the mainboard, but was unsuccessful. ...