JVC AV-20D202 CRT RGB mod RGB modification showcase converted from a community support request.
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This CRT uses the same board as JVC AV-27230 and therefore, please follow the mod details outlined there.
Contributors Thank you to everyone who contributed to this guide:
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
Manuals and Datasheets Specs Year: 2001 Format: NTSC Chassis: FD Tube: Samsung A51KRE89X Jungle Chip: Toshiba TB1253AN OSD Chip: M37272MA-314SP Screen Size: 20" Inputs: Composite, S-Video, RF, Component YPbPr RGB mux diagram
Schematics
This 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 mux calculatoropen in new window to play with your own values.
Component Value RGB/OSD inline resistor (chassis) 4.7kΩ Removed RGB/OSD resistor (chassis) 1.5kΩ RGB inline diode method (chassis) Yes RGB termination (R1, R2, R3) 220Ω RGB inline (R4, R5, R6) 1kΩ Audio LR (R7, R8) 1kΩ Diode (R9) 1N4148 Blanking Ground Resistor (R10) 4.7kΩ Blanking Resistor (R11) 1kΩ
Buy your RGB mux board kit
Detailed mod instructions to be added.
Pictures
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Mux board configuration
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Diodes installed
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Resistors removed
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R, G, B, blanking wires attached
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Sync, ground, audio wires attached
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Full mod picture
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