Sony KV (AA-2W)

# Sony AA-2W chassis CRT RGB mod

If you're looking to get the most out of your Sony Trinitron, you may want to consider modding it for RGB output. This guide will show you how to do just that.

Below is just instructions based on the service manual

# 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 AA-2W Service Manualopen in new window

# Schematics

# Mux diagram

If you are building your own circuit, this diagram should help. The diagram is for KV-27V20, it will also work for other AA-2D chassis based Sony CRTs.

# Step 1: Remove the following components

Remove R1123, R1128 and R133

# Step 2: Add a diode to blanking

Blanking diode added. Helps reduce interference. This mod was performed without shielded cables internally and absolutely no interference was noticed.

# Step 3: Connect RGB and blanking wires

# Step 4: Connect audio and sync wires

# Step 5: 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

It is important to note that the blanking ground resistor (R10) is necessary to prevent strange black backgrounds from appearing on the KV-27S22 OSD text.