JVC iArt AV-14F704

# JVC iArt AV-14F704 CRT RGB mod

This tutorial covers the RGB mod for JVC AV-14F704. Please follow the Toshiba 14AF43 RGB mod for any missing details. This JVC iArt series and Toshiba AF series internals (Orion tube/main board) are more or less the same.

# 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

• JVC AV-14F704 Service Manual
• M61283FP Chroma Chip

Note: the service manual for this TV doesn't seem to have the schematics.

# Schematics

I couldn't find the schematics for this TV. I just followed the Toshiba 14" schematics as they were more or less the same.

# AV-14F704

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

# Calculating the RGB external resistor value

Love it when we can put theories to use! Formula from our theory page!

External resistor value = 0.7 x (4700 + 75) - (75 x 5) / (5 - 0.7) = (3342 - 375) / 4.3 = 690 ohm

This is very close to the grounding resistor value we removed. This should be the case for this particular type of CRTs.

# Performing the mod

Please follow the Toshiba 14AF43 RGB mod

# Service Menu Settings