Panasonic TC-29V30R
Panasonic CT-9R10 CRT RGB mod
Caution
This mod is not verified. This is just notes.
- Panasonic TC-29V30R
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.
Specs
Service manuals
Schematics
Get hold of the schematics for your TV. Understand where the RGB and Fast Blanking signals go from OSD to the Jungle (Chroma) chip.
Checking the blanking signal with the voltage divider, around 3.4V is being sent to the jungle chip for blanking. Also on the RGB lines around 1.37V is being sent to the jungle chip. This is an unconventional voltage.
Build your mux board
| RGB mux board | TC-29V30R |
|---|---|
| Audio LR (R7, R8) | 1kΩ |
| RGB termination (R1, R2, R3) | 75Ω |
| RGB inline resistors (R4, R5, R6) | 560Ω |
| Diode (R9) | 1N4148 |
| Blanking Ground Resistor (R10) | open |
| Blanking Resistor (R11) | 2.2kΩ |
| CRT modification | TC-29V30R |
|---|---|
| Add diodes to RGB lines on chassis? | Yes |
| Add diodes to Blanking line on chassis? | No |