Samsung GXE1395
Samsung GXE1395 RGB mod
This article is coming soon.
Other mods
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.
Plan of attack
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.
Service manuals
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. Taking out the chassis is fairly straight forward on this CRT.
There are few wires that needs to be disconnected.
- Degauss wire
- Power wire
- Ground wire attached to the neck board
- Yoke deflection coil wire
- Anode wire (this is the one with the rubber cap)
- Left and right audio wires
Please remember that wires 1-5 are critical for the CRT to function and should not be omitted. Having any of these wires disconnected while powering up can damage the board and can have adverse effects.
STEP 1: Remove these resistors
Remove the following components. RGB resistors to the ground. Please always measure and mark them, so that you know you are removing the correct parts.
- R944 (560Ω)
- R945 (560Ω)
- R946 (560Ω)
STEP 2: RGB and blanking wires
STEP 3: Disable CCD
Jump resistor R948 to disable the closed caption display circuit.
STEP 4: Connect Sync, Audio and Ground
Wire colors
- Black wires is common ground
- Grey wire is for right audio
- White wire is for left audio
- Yellow wire is for sync
- Orange and purple wires are auxillary and can be tied away for future use.
STEP 5: 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.
| TV Model | GXE1395 |
|---|---|
| CRT inline resistors | 3.9kΩ |
| Add diodes to RGB inline? | Yes |
| Add diodes to blanking on chassis? | Yes |
| RGB termination (R1, R2, R3) | 75Ω |
| RGB inline resistors (R4, R5, R6) | 680Ω |
| Audio LR (R7, R8) | 1kΩ |
| Diode (R9) | 1N4148 |
| Open (R10) | -- |
| Blanking Resistor (R11) | shorted |
| Add diodes to RGB lines | Yes |
- for R4, R5, R6 use higher resistor value such as 180Ω or 220Ω to increase contrast/brightness.
STEP 6: 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?
Depending on your CRT, you might need to find a good place to mount the SCART port.