Orion TV1326BW
Orion TV1326BW CRT RGB mod
Pictures and instructions are not available yet. Only the configuration.
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
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.
STEP 1: Remove the following components
Remove the three 270Ω, RGB resistors to ground
- R609
- R610
- R611
STEP 2: Connect RGBs, Blanking and Audio
Pictures maybe coming soon.
STEP 3: Build your mux 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. Please also checkout the precalculated resistor values.
| Changes on the mux board | Orion TV1326BW |
|---|---|
| CRT RGB inline resistor (on chassis) | 3.3kΩ |
| Removed resistor value (on chassis) | 270Ω |
| Add blanking diode on chassis? | ? |
| RGB termination (R1, R2, R3) | 75Ω |
| RGB inline resistors (R4, R5, R6) | 470Ω |
| Audio LR (R7, R8) | 1kΩ |
| Diode (R9) | 1N4148 (?) |
| Blanking Ground Resistor (R10) | open |
| Blanking Resistor (R11) | 1kΩ |