JVC AV-27820
JVC AV-27820 RGB mux mod
In this tutorial, we will be discussing the RGB modification process for the JVC AV-27820 CRT.
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.
Plan of attack
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.
Service manuals
Specs
- Chassis: FA Chassis
Schematics
Prepare the mux diagram. If you are building your own circuit, this diagram should help
STEP 1-3: Performing the RGB mod
I don't have any pictures yet. If you end up modifying this set, you can claim this page by submitting your mod details here: https://sunthar.com/crts/jvc-av-27820
STEP 4: Build your mux board
Below mod uses the RGB mux board. I strongly suggest adopting this board and its well-established technique in your RGB mod, especially since the files are accessible for self-manufacturing. Please also checkout the precalculated resistor values.