# Toshiba 14AF43+ CRT RGB mod

This tutorial covers the RGB mod for the below models

  • Toshiba 14AF43
  • Toshiba 14AF44
  • Toshiba 14AF45
  • Toshiba 14AF46

# CRT safety

DANGER

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

# 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.

READ THE RGB MODDING THEORY

# Specs

# 14AF43

  • Chassis: M3M827
  • Manufactured: Thailand, August 2003
  • Power Consumption: 80W, 120V, 60Hz (NTSC)

# 14AF44

  • Chassis: M3M827
  • Manufactured: Thailand, September 2004
  • Power Consumption: 80W, 120V, 60Hz (NTSC)

# 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.

# 14AF43

img

If you are building your own circuit, this diagram should help img

# 14AF44

The below schematics is similar to 20AF44 img

# Performing the mod

# STEP 1: Remove the following components

# 14AF43

  • Remove the following components

RGB resistors to the ground

  • R141
  • R142
  • R143

Coupling capacitors to the ground

  • C124
  • C126
  • C129

WARNING

I also removed C131. This impacted the OSD blue background. Lesson learned. Don't remove it.

# 14AF44

  • 14AF44 is similar to 14AF43. Remove the following components

RGB resistors to ground

  • R141
  • R142
  • R143

There were no coupling capacitors to the ground that needed to be removed on my particular system. However, if you do find them in your TV, please remove them. Sometimes these coupling capacitors are mentioned in the service manual, but you don't find them on the actual board and vice-versa.

Coupling capacitors to ground

  • C124
  • C126
  • C129

img

img

Did not remove C131 or C135. Removing them can affect the background of the OSD. Therefore, left them alone.

# STEP 2: Connect RGBs, Blanking and Audio

# 14AF43/14AF44

Connect the R, G, B and blanking (orange) wire. "X" is where the wires are connected. img

The mod on the board itself img

Close up of RGB and Blanking img

Close up of Sync and Audio img

# 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.

Buy your RGB mux board

Depending on the RGB/OSD stock resistors your CRT has, use the below inline resistors.

TV Model 14AF43 14AF44 14AF45/46
RGB/OSD stock resistors 3.3kΩ 6.8kΩ 6.8kΩ
Audio LR (R7, R8) 1kΩ 1kΩ 1kΩ
RGB termination (R1, R2, R3) 75Ω 75Ω 75Ω
RGB inline resistors (R4, R5, R6) 560Ω 1kΩ 1kΩ
Diode (R9) 1N4148 1N4148 1N4148
Blanking Resistor (R11) shorted shorted shorted

Sample Toshiba 20AF44 RGB Mux Adapter img

# STEP 4: 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?

# Pictures

# Finished mod

SCART connector inside a Toshiba 14AF43. This location was a bit closer to the flyback. However, there was very minimal to no interference noticed. img

Not the best cutout for the SCART connector. But, it is straight and holds steady. img

Full backside shot of 14AF43 img

# Games

These pictures don't justify the realworld experience. Nevertheless, good to see some!

Sonic - Sega Genesis img

SNES - Super Mario World img

SNES - Megaman img

PS1 - Boot img

PS1 - Boot img

XBOX - Boot img

# Test patterns

SMPTE Colors img

Infamous Grid img

# Service Menu Settings

# 14AF43

NUM SETTING VALUE FIXED
00 OSD 22 DEFAULT
01 DEFAULT
02 H VCO 3 DEFAULT
03 H PHASE 12 DEFAULT
04 AFC GAIN 6 DEFAULT
05 V SHIFT 0 DEFAULT
06 H.SIZE 0 DEFAULT
07 V.SIZE 28 DEFAULT
08 V.LIN 22 DEFAULT
09 VS.CORR 42 DEFAULT
10 R.DRV 66 DEFAULT
11 B.DRV 71 DEFAULT
12 R.BIAS 127 DEFAULT
13 G.BIAS 152 DEFAULT
14 B.BIAS 151 DEFAULT
15 BRI.MAX 120 DEFAULT
16 BRI.CENT 80 DEFAULT
17 BRI.MIN 50 DEFAULT
18 CONT.MAX 100 DEFAULT
19 CONT.CENT 60 DEFAULT
20 CONT.MIN 18 DEFAULT
21 COL.MAX 90 DEFAULT
22 COL.CENT 61 DEFAULT
23 COL.MIN 00 DEFAULT
24 TINT 54 DEFAULT
25 SHARP 35 DEFAULT
26 CB DL 0 DEFAULT
27 CR DL 0 DEFAULT
28 CB PED 8 DEFAULT
29 CR PED 8 DEFAULT
30 PARABOLA 31 DEFAULT
31 CORNER 31 DEFAULT
32 TRAPEZIU 31 DEFAULT
33 LEVEL 21 DEFAULT
34 SEP1 8 DEFAULT
35 SEP2 30 DEFAULT