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JVC AV-36D201

TpoundxAbout 3 minCRT RGB mod

JVC AV-36D201 D-Series CRT RGB mod

This JVC D-Series underwent RGB modifications by a fellow redditor. The RGB mod tutorial provided here is essentially identical to JVC AV-27D201.

This tutorial should also work for the following models.

  • JVC AV-27D201
  • JVC AV-32D201

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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

Service Manuals

Specs

  • NTSC, 60 Hz, 133W
  • Chassis: GR2
  • Tube: A90AEJ15X01
  • Jungle Chip: JVC JCC1007A
  • OSD Chip: MN1876478JD

Schematics

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RGB mux diagram

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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: Add caps and diodes

  • Remove stock electrolytic caps and replace with ceramic caps. C801, C802, C803
  • Replace jumpers Y706, Y707, Y708 with diodes. Pay attention to the direction of the diodes.

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STEP 2: Remove and replace the following components

There are two areas to focus for STEP 2 and 3 img

First focus on Area 1 and remove the following three SMD resistors.

  • R717 (330 ohms)
  • R719 (330 ohms)
  • R721 (330 ohms)

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STEP 3: Connect RGB, Blanking wires

Next, focus on Area 2 and attach the blanking wires. There is a conveninet hole nearby to route the wires. Make sure you are soldering the wires to the correct leg.

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STEP 4: Sync and audio wires

Sync goes to the green component jack (Video Input 2). Left and right audio also goes with the Input 2.

Audio img

Sync and ground img

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 Model36D201
RGB/OSD inline resistors2.2kΩ
In line diode methodYes
Audio LR (R7, R8)1kΩ
RGB termination (R1, R2, R3)75Ω
RGB inline resistors (R4, R5, R6)390Ω
0.1uF caps replacedYes
Diode (R9)1N4148
Blanking Resistor (R11)75Ω

Used RGB mini mux board (Rev C) here to perfectly fit this on the back of the D-Series. Remember the diode stripe should point towards the SCART port on R11.

RGB mux board kit was shipped with few pins soldered. img

After soldering all the pins on the board. img

Look at the tight fit in the below pictures.

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One must carefully plan where the mux board should go.

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End result is very satisfying. This is where the SCART port belongs on a 32", D201.

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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?

Service Menu

  • Press the SLEEP TIMER key and set the SLEEP TIMER for 0 MIN
  • While the SLEEP TIMER is displaying on the CRT, do the below
  • Immediately press the DISPLAY key and the VIDEO STATUS key of the remote control unit at the same time.
  • Then enter the SERVICE MENU screen shown in figure.

Pictures

Games

SNES - Super Mario World img

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Set

Before installing the SCART port img

After installing the SCART port img

Front of the set img

Jungle/Chroma IC img

OSD IC img

Neck board img

Anode cap img

Tube img

Tube label img

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