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RCA E13320

Martin Seibert (pics)Sunthar (article)About 2 minCRT RGB mod

RCA E13320 RGB mod

This tutorial is meant for those seeking the highest video quality possible from an old RCA CRT TV E13320.

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CRT safety

Caution

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.

READ THIS BEFORE CONTINUING

Plan of attack

READ THIS TO PREPARE

Theory

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.

READ THE RGB MODDING THEORY

Schematics

Prepare the mux diagram. If you are building your own circuit, this diagram should help

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Video Schematics

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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.

  • RR535
  • RR536
  • RR537

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STEP 2: Connect RGBs, Blanking and Audio

Picture below shows where the RGB and blanking wires should be soldered.

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Composite Sync, Audio and Ground wires should be connected.

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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.

Buy your RGB mux board

TV ModelE13220
Audio LR (R7, R8)1kΩ
RGB termination (R1, R2, R3)180Ω
RGB inline resistors (R4, R5, R6)820Ω
Diode (R9)1N4148
Blanking Resistor (R11)1.5kΩ

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Buy your RGB mux board

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.

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How to create and mount a SCART female plug?

Pictures

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Adding an audio ouput

If you want audio output, you can tap into it before the 1 kΩ resistors on the mux board. Side closer to the SCART input and not the side closer to the ribbon cable. You can use the orange wire for ground.

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