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Sony KV (BA-4C) RGB

About 1 minCRT RGB modKV-20FV10

Sony BA-4C (Sony KV-20FV10) chassis CRT RGB mod

Coming soon! In the meantime, you can follow the BA-4D tutorial as the chroma and OSD chip and setup are identical.

  • KV-20FV10

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

Service manuals

Mux diagram

If you are building your own circuit, this diagram should help. The diagram is for KV-20FV10 or any other BA-4C chassis.

Sony BA-4C chassis RGB mod mux diagram

Build your mux board

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. Please also checkout the precalculated resistor values.

Buy your RGB mux board

TV ModelKV-20FV10
CRT inline resistors5.6kΩ
ChassisBA-4C
Audio LR (R7, R8)1kΩ
RGB termination (R1, R2, R3)75Ω
RGB inline resistors (R4, R5, R6)1kΩ
Diode (R9)1N4148
Blanking Resistor (R11)1kΩ
Add diodes to RGB linesYes
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