Sony KV (BA-5) 32FS13

# Sony BA-5 chassis CRT RGB mod

Below mod was performed on KV-32FS13.

This tutorial should also cover the RGB mod for the below models with the BA-5 chassis. However, there might be slight differences.

• KV-32FS13
• KV-32FS17
• KV-34FS17

You can also checkout the KV-20FV12 (BA-5) and KV-24FV12 (BA-5) RGB mod tutorials as the board layout is slightly different on those sets.

# 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 BA-5 Chassis Service Manual (other)

# Specs

# Sony KV-32FS13

• Manufactured: October 2001, Mexico
• NTSC, 60 Hz, 195W
• Chassis: BA-5
• Tube:
• Jungle Chip: CXA2154AS
• OSD Chip: M372280MK-114SP

# Schematics

# Mux diagram

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

# Calculating the RGB external resistor value

Formula from our theory page!

RGB external resistor value = 0.7 x (6800 + 75) - (75 x 5) / (5 - 0.7) = (4812 - 375) / 4.3 = 1030 ohm

~ 1 Kohm resistors should do the job.

# Performing the mod

Now that you roughly know what needs to be done, prepare for the mod. Place the board on a comfortable place. Make sure you are not putting pressure on the flyback or other components.

# STEP 1: Remove the following components

Most of the mod will happen on the MA board.

Remove the following components. RGB resistors to the ground. Measure twice and mark before you remove.

• R086 (680Ω)
• R087 (680Ω)
• R088 (680Ω)

Note: there can be slight differences in the board layout depending on the CRT revision.

# STEP 2: Connect RGBs, Blanking and Audio

See picture above to see where blanking should be connected.

Let's remove the jumpers JW343, JW343, JW341 and replace with 3 1N4148 diodes. Pay attention to the direction of the diodes. There is a black bar indicating which way the current flows. This helps reduce feedback noise and voltage going back into the OSD.

Then attach the R, G, B wires to the respective legs of the diodes. Wires should be attached to the side closer to the jungle chip.

Blanking wire should be attached as seen on the picture below.

Sync wire (yellow) should be connected directly to the s-video Y pin. Ground wire (purple) should be connected to the ground.

Black wire is for ground. Orange and purple wires are auxillary wires, you can connect them to ground or leave them floating.

Audio wiring can go below the board. Connect audio left (white) and audio right (grey) as seen in the pics below.

# STEP 3: Build your mux board

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

You have to be strategic about the board placement. Sony KV-20FV12 has tight spacing with flyback and the audio board on the way.

Buy your RGB mux board

It is recommended to use the Rev C mini board for this CRT with the straight SCART connector. Rev B board can be used, if the spacing is carefully planned.

# 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?

# Getting into the service menu

• Turn the set on and then put into standby
• Press the Display, 5, VOL + buttons in sequence
• Turn on the CRT and you should be in service mode
• Use buttons "1" and "4" on the remote control to navigate the service menu
• Use buttons "3" and "6" to adjust the selected data

# Pictures

# Set