Toshiba 24AF43+

SuntharAbout 3 min

Toshiba 24AF43+ CRT RGB mod

This tutorial covers the RGB mod for the below models.

Toshiba 24AF43
Toshiba 24AF44
Toshiba 24AF45
Toshiba 24AF46

The Toshiba 24AF43 is a 24" flat-screen CRT television released in 2003. It is praised for its excellent picture clarity, robust built-in stereo speakers, and a wide range of connections, including RF, Composite, Component YPbPr, and S-Video.

This model is RGB mux moddable, with instructions applicable to the 24AF43, 24AF44, 24AF45, and 24AF46.

The last digit in the model number indicates the year of release. Over the years, Toshiba gradually removed inputs and made some bill of materials adjustments to reduce costs. Fortunately, all these models remain RGB moddable.

View full CRT details and more mod examples →open in new window

Please also see other Toshiba AF series mods, as the instructions are more or less the same.

Contributors

Thank you to everyone who contributed to this guide:

Suntharopen in new window — author, RGB mod and pictures

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

Manufactured: Thailand (2003)
Format: NTSC
Chassis: M3M627
Tube: Orion A60LVY196X11
Jungle Chip: Renesas M61283FP
OSD Chip: Orion OEC7090A
Screen Size: 24"
Power: 125 W
Weight: 73 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.

Toshiba 24AF43 RGB MUX diagram

PCB

Points where the R, G, B and Blank wires should be connected are marked "X". Pink boxes show the resistors, diodes that needs to be removed.

Actual PCB might be slightly different for your particular CRT. However, the mod that needs to be applied is in similar location. Below was taken from Toshiba 20AF44.

Performing the mod

STEP 1: Remove the following components

Remove the RGB resistors to ground

R141
R142
R143

Unplug the VM cable on the neck board.

STEP 2: Connect RGBs, Blanking and Audio

Connect the RED, GREEN, BLUE, BLANKING wires

Connect the SIGNAL, AUDIO RIGHT, AUDIO LEFT, GROUND wires

STEP 3: 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 calculatoropen in new window to play with your own values.

On Toshiba CRT Chassis	24AF43
CRT RGB inline resistor	3.9kΩ
CRT RGB ground resistors removed	680Ω
0.1μF caps replaced	Yes
Add diodes on chassis RGB lines?	Yes
Add blanking diode on chassis	No

RGB mux board	24AF43
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:

Buy your RGB mux board kit

If you're not confident in cutting the SCART port yourself, I recommend going with the 1.4C along with the trim plate for a cleaner, more professional look.

Follow this method to reduce ringing artifacts

Sample Toshiba 20AF44 RGB Mux Adapter