Disney Princess DT1350-P CRT RGB mod
This tutorial covers the RGB mod for the below models
- Disney Princess DT1350-P
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.
This CRT has a weird wiring method where the AC cord goes through the bottom of the back cover. Also, this version of the Disney Princess CRT doesn't stand still without the back cover.
Composite input on this TV looks really good. While RGB definitely takes the quality up a notch, be careful not to make any un-unecesary modification to this CRT as these CRTs are becoming rare.
Plan of attack
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.
Disney Princess DT1350-P
- Model: DT1350-P (JULY 2005)
- NTSC, 60 Hz, 54W
- Chassis: M3P935P
- Tube: Orion A34AGT13X98
OSD - OEC7108A
Chroma - M61250BFP
If you are building your own circuit, this diagram should help
Calculating the RGB external resistor value
You can use this pre-calculated chart to find the resistor values needed for 4.7 kΩ inline resistors. You will notice 750Ω resistor value will work for this mod. I chose to use 680Ω as I had that in hand. But, anything in the range of 550Ω to 800Ω should work ok here.
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.
STEP 1: Remove the following components
Remove the three 680 ohm, RGB resistors to ground. Measure and mark before you remove.
STEP 2: Connect RGBs, Blanking and Audio
Remove the resistors marked with the pink square boxes. Wire the R, G, B and blanking wires to the points marked as 'X' on the diagram above. The mod on the CRT is fairly straight forward and follows the standard mux mod.
Close up of RGB and Blanking
Close up of Sync and Audio
It's almost like the chassis designers were expecting someone to RGB mod this in the future. There are pads easily available on the board to solder the wires.
All wired up! Click to zoom in
After attaching the bottom black panel to the board
STEP 3: 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||1350P||RGB Mux Board Notes|
|RGB inline resistors||680Ω||R1, R2, R3|
|RGB termination||75Ω||R4, R5, R6|
|Audio LR||shorted||R7, R8 (1 kΩ resistor present on the board)|
|Blanking inline||4.7kΩ||R9 (CRT internal 4.7kΩ resistor for 2.5V)|
|Blanking ground||open||R10 (CRT internal grounding resistor is used)|
|Csync 75Ω||open||R12 (75Ω terminated in the CRT)|
STEP 4: Attach the female SCART connector to TV
Inside the CRT back chassis
Back of the CRT
Before and After SCART
Getting into service menu
While pressing the Volume down on the CRT, press
9. Only adjustment I had to make was the horizontal phase (shift).
Pictures of the mod
SNES - Super Mario World with overlay
SNES - Contra III: The Alien Wars
Sega Genesis - Sonic with overlay
XBOX - Boot
PS1 - Boot
Grid (Before the HPOS shift on service menu)
Board top view
Tube - Orion A34AGT13X98
AC Cord wiring
This tv has a weird wiring method where the AC cord goes through the bottom of the back cover. Also, this version of the Disney Princess CRT doesn't stand still without the back cover.