You can die doing this! So read carefully! CRT TV is not a toy. Do not open a CRT TV. If you don't have any prior knowledge about handling high voltage devices, this guide is not for you. CRT TV contains sufficient high voltage and current to be deadly, even when it is turned off.
This is provided for information purposes only. If you haven't worked on a CRT or don't know how high voltage equipment works, stay away from this. Follow this tutorial at your own risk.
# Preparing the TV for RGB mod
- First make sure all video inputs work without issues
- Remove the TV from the power plug
- Let the TV sit for a day, so that it can discharge itself
- Remove the screws on the back of the TV
- WARNING: Discharge the tube
- WARNING: Don't short to discharge the capacitors. Accidentally shorting the wrong location can damage the sensitive components. Use a discharging tool.
- WARNING: 5 minutes later discharge the tube again
- Remove the mainboard. Try not to touch any of the capacitors
- Discharge the bigger capacitors one by one
High voltage is present in the tube, and also in the capacitors throughout the CRT board. They take a long time to discharge. The below video shows two places that must be discharged prior to CRT operation. Discharging the capacitors on the board through a shorting method can damage the board, components and you. While discharging the tube using a screwdriver that is attached to the tube string ground (not the CRT board ground) is fine, you have to find a proper method to discharge the capacitors on the board.
DO NOT DISCHARGE THE NECK BOARD BY SHORTING - THE BELOW VIDEO IS JUST TO DEMONSTRATE THERE IS CHARGE PRESENT IN THE BOARD.
USE A PROPER DISCHARGING TOOL TO DISCHARGE THE NECK BOARD.
# Tools needed
- CRT Tube discharger (check YouTube tutorials to see how you can make one)
- High Voltage rated Rubber Gloves
- Phillips screw driver
- Colored wires (22 AWG)
- Female SCART socket
- SNES system with a SCART cable