Samsung TXE1970

Samsung TXE1970 CRT RGB mod

This tutorial covers the RGB mod for the Samsung TXE1970 CRT TV.

CRT safety

Caution

You can die doing this! So read carefully! CRT TV is not a toy. Do not open a CRT TV. If you don't have any prior knowledge about handling high voltage devices, this guide is not for you. CRT TV contains high enough voltage (20,000+ V) and current to be deadly, even when it is turned off.

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

Samsung TXE1970

Manufactured: 1996 September, Mexico
NTSC, 60 Hz, 80 Watts
Tube: Samsung A48KRD82X

Prototyping the mod

Simplified circuit diagram that was created to perform this mod. Check the RGB theory page to find more details around how to calculate the resistor values.

RGB mod instructions

Carefully remove the main chassis and get it ready for the mod.

STEP 1: Remove the following components

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

R204 (1.2 kΩ)
R205 (1.2 kΩ)
R206 (1.2 kΩ)

STEP 2: Connect RGBs, Blanking and Audio

RGB and Blanking

Audio, Ground and Sync Wires

STEP 3: Cut trace to disable AV detection

This disables the detection whether AV is plugged in or not

STEP 4: 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

TV Model	TXE1970
RGB/OSD stock resistors	7.5kΩ
Audio LR (R7, R8)	1kΩ
RGB termination (R1, R2, R3)	220Ω
RGB inline resistors (R4, R5, R6)	1.2kΩ
Diode (R9)	1N4148
Blanking Resistor (R11)	shorted
R919 8.2kΩ replacement	6.8kΩ
Add a didoe between OSD and R919	1N4148