Sylvania 6413CTA

# Sylvania 6413CTA CRT RGB mod

This tutorial covers the RGB mod for the Sylvania 6413CTA CRT TV. Quality of this set was stunning. Don't pass up the opportunity to RGB modify a Sylvania set. This tutorial also applies to ST413A, F413TA and 6413TA models.

Later model, Sylvania 6413CTB is not RGB moddable.

# 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

# Specs

# Sylvania 6413CTA

• Manufactured: November 2000, Made in Malaysia
• NTSC, 60 Hz, 53W
• Chassis: 6413CTA
• Tube: A34LRQ90X

# Service Manual

• Sylvania 6413CTA Service Manual

# Schematics

# Mux diagram

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

# Performing the mod

# STEP 1: Remove the following components

Remove the RGB resistors to ground

• R125 (560Ω)
• R126 (560Ω)
• R127 (560Ω)
• R128 (1.5kΩ)

Yes, we are going to remove the blanking ground resistor R128 and put this on the mux circuit. Otherwise with the voltage drop of the diode we are going to introduce, we will not see the OSD menu.

Remove the 4 jumpers

• J172
• J173
• J176
• J177

Remove the below capacitor

• C353 (we are going to replace this with a ceramic capacitor)

# STEP 2: Add components

Replace the removed jumpers with 1N4148 diodes. Pay attention to the direction of the stripes.

Replace the removed 1uF, 50V electrolytic capacitor with 0.1uF, 50V ceramic capacitor. This is the capacitor that is in the sync line.

# STEP 3: Connect Audio, RGB, Sync and Ground wires

Pay close attention to where the R, G, B and Blanking wires are soldered. They should be soldered to the leg of the diodes that is closer to the chroma.

# STEP 4: 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.

RGB mux adapter

# STEP 5: 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?

# STEP 6: Service Menu

To access the service menu on this device, you'll need the OEM remote and perform a minor modification by shorting Jumper J1. Follow these steps:

• There are 3 screws holding the OEM remote together. Once the screws are removed the back easily detaches.
• Take the remote's PCB outside, and use a wire to create a short for Jumper J1.

Once the modification is made, use the below buttons to adjust the horizontal shift.

• Press the power button on the TV (Remote power button won't work)
• SLEEP: Enter service mode
• POWER: Exit service mode
• H-POS: Press 8 on remote. Use CH +/- to adjust. Had to go from 10 to 12.

# Pictures

As of this writing, I have not been able to shift the RGB image as I do not have the original Sylvania remote control to get into the service menu.

# Games

# Patterns

240p pattern - SMPTE

240p pattern - Convergence

240p pattern - grid

240p pattern - after horizontal shift

# General

Tube

Back Label

Flyback

Component side with several caps replaced (marked with red dots)