Sony KV (BA-1)

# Sony BA-1 chassis CRT RGB mod

Bring your Sony CRT to life with vibrant RGB colors! Below mod was performed on KV-20TS29.

This tutorial should also cover the RGB mod for the below models with the BA-1 chassis. However, there might be slight differences.

13" models

• KV-13TR28
• KV-13TR29
• KV-13V50

20" models

• KV-20TR23
• KV-20TS29
• KV-20TS32
• KV-20TS50
• KV-20V50

Inspired by the following mods

• KV-13TR28open in new window
• KV-20TS29open in new window

# CRT safety

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

# Service manuals

• Sony KV-13TR28 Service Manual
• Sony KV-20TS29 Service Manual

# Specs

# Sony KV-20TS29

• Manufactured: October 2001, Mexico
• NTSC, 60 Hz
• Chassis: BA-1
• Tube: A51JUH51X
• Jungle Chip: CXA1465AS

# Sony KV-13TR28

• Manufactured: April 1994, Mexico
• NTSC, 60 Hz
• Chassis: BA-1
• Tube: A34JBU70X
• Jungle Chip: CXA1465AS

# Schematics

Red is shown for reference. Blanking (Ys), Red, Green, Blue lines are exposed on 5, 6, 7, 8 of the CN101 connector.

# Performing the mod

You can't ask for a more straightforward RGB mod.

Fortunately this chassis doesn't require any muxing. You can pass R, G, B through a 0.1uF, 75ohm terminated wire directly to the CN101 header. Blanking (Ys) can be fed through a 1kΩ + 0.7V didoe to pin 5 of the CN101 header.

# STEP 1: Connect RGB, Blanking and Audio

You only need about a maxium 1 feet length of ribbon cable. Shorter this cable the better as it reduces interferece.

See picture to see where blanking, R, G, B should be connected. Blanking (Ys), Red, Green, Blue lines are exposed on 5, 6, 7, 8 of the CN101 connector.

V1 V-IN for SYNC V1 L-IN for Left Audio V1 R-IN for Right Audio E for GROUND

# STEP 2: Build your mux board (optional)

Below mod uses the RGB mux board. However, it is optional for BA-1 chassis. Using the mux board makes the mod neater and easier. Please note for this mod, 0.1uF caps were used in place of R4, R5, R6 resistors.

Buy your RGB mux board with the necessary parts to complete this mod

Caps were used instead of resistors.

Buy your RGB mux board with the necessary parts to complete this mod

# STEP 3: Attach the female SCART connector to TV

Sony KV-20TS29 had this sticker at the back that made it very difficult to cut the SCART port. Cutting this port is probably most complex part of this mod.

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 of the mod

# OSD

Menu on top of the Metroid game

# Games

NES - Adventure Island

SEGA Genesis - Sonic

XBOX - UnleashX

PS1 - Boot

# Patterns

Grid

# Inside of the CRT

A board

Back view

Tube

Neck board

# Service Menu

On the remote, press keys in this sequence DISPLAY, 5, VOL +, POWER

1 and 4 to select 3 and 6 to adjust

MUTING, ENTER to write to memory.