Toshiba 14AF42
Toshiba 14AF42 CRT RGB mod
The Toshiba 14AF42 is a 14" flat-screen CRT television manufactured around 2002. It features a shadow mask tube, component (YPbPr) video, and S-video inputs, making it a competitive alternative to Sony Trinitrons.
View full CRT details and more mod examples →
Contributors
Thank you to everyone who contributed to this guide:
- Matt Ross — contributor, CRT specs from CRT Database.
- Joseph Indovina — contributor, Pictures
- Sunthar — contributor, RGB mod 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.
Plan of attack
Manuals and Datasheets
Specs
- Year: 2002
- Format: NTSC
- Tube: Orion A36AKJ13X05
- Jungle Chip: Toshiba TB1253N
- OSD Chip: Orion OEC7074A
- Screen Size: 14"
- Weight: 24.3 lbs
- Inputs: Composite, S-Video, RF, Component YPbPr
RGB mux diagram
Prepare the mux diagram. If you are building your own circuit, this diagram should help.
Performing the mod
STEP 1: Remove the following components
RGB resistors to the ground
- R139
- R140
- R141
STEP 2: Remove jumpers
Remove RGB jumpers and replace them with diodes.
Pay attention to the diode direction.
STEP 3: Connect RGBs, Blanking and Audio
R, G, B and blanking wires should be soldered as seen below.
Audio and ground wires should be soldered as seen below. 
STEP 4: Final wiring
STEP 5: Build your mux circuit
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 calculator to play with your own values.
| On Toshiba CRT Chassis | 14AF42 |
|---|---|
| CRT RGB inline resistor | 4.7kΩ |
| CRT RGB ground resistors removed | 1kΩ |
| 0.1μF caps replaced | No |
| Add diodes on chassis RGB lines? | Yes |
| Add blanking diode on chassis | No |
| RGB mux board | 14AF42 |
|---|---|
| Mux board RGB termination (R1, R2, R3) | 75Ω |
| Mux board RGB inline resistors (R4, R5, R6) | 1kΩ |
| Mux board Audio LR (R7, R8) | 1kΩ |
| Mux board blanking diode (R9) | 1N4148 |
| Mux board blanking ground resistor (R10) | open |
| Mux board blanking resistor (R11) | short |
Compatible mux boards:
Sample Toshiba 20AF44 RGB Mux Adapter 
STEP 6: Attach the female SCART connector to TV
Creating a SCART cutout and mounting it is an art. I have a dedicated section for it.
How to create and mount a SCART female plug?
