Panasonic CT-27SL15

# Panasonic CT-27SL15 CRT RGB mod

The Panasonic CT-27SL15 is a 27" Tau series flat-tube CRT television from 2005, often noted for excellent picture quality (similar to the Toshiba 27AF45) and a strong, bassy audio output. It features component, S-video, and composite inputs. It has forced velocity modulation that often requires physical disconnection for optimal, sharp 240p display.

This set is RGB modifiable.

View full CRT details and more mod examples →open in new window

Other than the fact the resistor values are slightly different the RGB mod should be similar to Toshiba 27AF45

# Contributors

Thank you to everyone who contributed to this guide:

• Matt Rossopen in new window — contributor, CRT specs from CRT Database.
• Suntharopen in new window — author, RGB mod details

# CRT safety

READ THIS BEFORE CONTINUING

# Plan of attack

READ THIS TO PREPARE

# Manuals and Datasheets

• Panasonic CT-27SL15 Service Manualopen in new window

# Specs

• Manufactured: Thailand (2005)
• Format: NTSC
• Chassis: CME021A
• Tube: Panasonic A68QCU770X66
• Jungle Chip: M61283BFP
• OSD Chip: OEC7123A
• Screen Size: 27"
• Inputs: Composite, S-Video, RF, Component YPbPr

# RGB mux diagram

Prepare the mux diagram. If you are building your own circuit, this diagram should help.

# Performing the mod

Other than the fact the resistor values are slightly different the RGB mod should be similar to Toshiba 27AF45

# STEP 1: Remove the following components

Remove RGB resistors to ground

• R141 (560Ω)
• R142 (560Ω)
• R143 (560Ω)

# STEP 2: Disable VM (optional)

You can easily disable by disconnecting the VM cable on the neck board.

# STEP 3: Connect RGB and blanking wires

# STEP 4: Connect Sync, Audio and Ground wire

Connect the SIGNAL, AUDIO RIGHT, AUDIO LEFT, GROUND wires

# STEP 5: Build your mux board

This 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 mux calculatoropen in new window to play with your own values.

Compatible mux boards: RGB MUX BOARD KIT 1.4Bopen in new window

Buy your RGB mux board kit

# Pictures

# Reference Photos

View full-size imageopen in new window

See more photos and contributions →open in new window