RCA E13320 RGB mod
If you want the best video quality from an old RCA CRT TV E13320, then this tutorial is for you.
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 high enough voltage (20,000+ V) and current to be deadly, even when it is turned off.
Plan of attack
Sometimes it is nice to know the theory behind the mod. I have put this on a separate page. This shows how the various resistor values are calculated.
Prepare the mux diagram. If you are building your own circuit, this diagram should help
Performing the mod
Now that you roughly know what needs to be done, prepare for the mod. Place the board on a comfortable place. Make sure you are not putting pressure on the flyback or other components.
STEP 1: Remove the following components
Remove the following RGB resistors that are connected to the ground.
STEP 2: Connect RGBs, Blanking and Audio
Picture below shows where the RGB and blanking wires should be soldered.
Picture below shows the BE01 header where the Composite Sync, Audio and Ground wires should be connected.
STEP 3: Build your mux board/circuit
Below mod uses the RGB mux board. This is optional, but will make your mod easier and stable. You can also create the circuit presented in the schematics above without the board.
|Audio LR (R7, R8)||1kΩ|
|RGB termination (R1, R2, R3)||180Ω|
|RGB inline resistors (R4, R5, R6)||820Ω|
|Blanking Resistor (R11)||shorted|
STEP 4: Attach the female SCART connector to TV
Creating a SCART cutout and mounting it is an art. I have a dedicated section for it.