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Toshiba 13A21+

SuntharAbout 2 minCRT RGB modToshiba 13A21Toshiba 13A22Toshiba 19A21

Toshiba 13A21+, 19A21 CRT RGB mod

This mod should also work for the below models

  • Toshiba 13A21
  • Toshiba 13A22
  • Toshiba 19A21

This mod doesn't work for the below models. Below models use a single-chip. In the absence of OSD chip, RGB mod is not possible.

  • Toshiba 13A23
  • Toshiba 13A24
  • Toshiba 13A25

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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

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

Toshiba 13A21

  • Manufactured: Made in Thailand, May 2001
  • NTSC, 60 Hz
  • Chassis: M3J88
  • Tube: Orion A34AGT13X98
  • Chroma Chip: M61206FP
  • OSD Chip: OEC7063A

Memorex MT1132A

  • NTSC, 120V 60 Hz, 54W
  • Chassis: TMX494A/B
  • Tube: Orion A34AGT13X98 or A34JXV70X53N45
  • Chroma Chip: M61206FP
  • OSD Chip: OEC7045B

Memorex MT1192A

  • NTSC, 120V 60 Hz, 73W
  • Chroma Chip: M61206FP
  • OSD Chip: OEC7045B

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.

13A21

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13A22

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PCB

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

13A21

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13A22

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Performing the mod

STEP 1: Remove the following components

Remove the three 680 ohm, RGB resistors to ground

  • R102
  • R103
  • R104

STEP 2: Connect RGBs, Blanking and Audio

13A21 img

13A21 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

TV Model1350PRGB Mux Board Notes
RGB termination75ΩR1, R2, R3
RGB inline resistors680ΩR4, R5, R6
Audio LR1kΩR7, R8 (1 kΩ resistor present on the board)
Blanking inline4.7kΩR9 (CRT internal 4.7kΩ resistor for 2.5V)
Blanking groundopenR10 (CRT internal grounding resistor is used)
Diode1N4148R11
Csync 75ΩopenR12 (75Ω terminated in the CRT)

Buy your RGB mux board

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SCART connector 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.

SCART connector mounted img

How to create and mount a SCART female plug?

Pictures

13A21 Games

SNES - The Legend of Zelda A Link to the Past img

SNES - Super Mario World img

SEGA Genesis - Sonic img

NES - 1942 img

13A21 Patterns

240p - Grid img

13A22 Games

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13A21 Random Pics

Back cover open img

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