REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Wednesday, 13 March 2019

TOSHIBA 43VJ13P SERVICE MODE AND POWER SUPPLY CIRCUIT

TOSHIBA 43VJ13P SERVICE MODE AND POWER SUPPLY CIRCUIT


TOSHIBA 43VJ13P

SERVICE MODE AND POWER SUPPLY CIRCUIT 


ENTERING TO SERVICE MODE
1) Press MUTE  button once on Remote Control.
2) Press MUTE button again to keep pressing.
3) While pressing the MUTE button, press MENU button on TV set.
DISPLAYING THE ADJUSTMENT MENU
 Press MENU button on TV.
Service mode ------Adjustment mode
KEY FUNCTION IN THE SERVICE MODE
The following key entry during display of adjustment menu provides special functions.
Screen adjustment mode ON/OFF: -/-- button (on Remote)
Test signal selection : AV button (on Remote)
Selection of the adjustment items : Channel UP/DOWN (on TV or Remote)
Change of the data value : Volume  +/– (on TV or Remote)
Adjustment menu mode ON/OFF : MENU button (on TV)
Initialization of the memory (QA02) : CALL + Channel button on TV (UP)
Reset the count of operating protect
circuit to “00”: CALL + Channel button on TV (DOWN)
“RCUT” selection : 1 button
“GCUT” selection : 2 button
“BCUT” selection : 3 button
“SCNT” selection : 4 button
“COLP” selection : 5 button
“TNTC” selection : 6 button
Convergence adj : YELLOW button
Self diagnostic display ON/OFF : 9 button
Color thickness correction
note: Displayed differently as shown below, de pending on the setting of the receiving color system.
COLP (PAL)
COLC (NTSC)
COLS (SECAM)
SELECTING THE ADJUSTING ITEMS
Every pressing of CHANNEL UP button in the service mode changes the adjustment items  (DOWN button for reverse order)
ADJUSTING THE DATA
Pressing of VOLUME  +/– button will change the value of data in the range from 00H to FFH. The variable range depends on the adjusting item.
 EXIT FROM SERVICE MODE
1) Pressing POWER button to turn off the TV once.
INITIALIZATION OF MEMORY DATA OF QA02
After replacing QA02, the following initialization is required.
1. Enter the service mode, then select any register item.
2. Press and hold the CALL button on the Remote, then press the CHANNEL UP button on the TV. The initialization of QA02 has been complated.
3. Check the picture carefully. If necessary, adjust any adjustment item above. Perform “Auto search Memory” on the owner’s manual. CAUTION: Never attempt to initialize the data unless QA02 has been replaced.
TEST SIGNAL SELECTION
1) Every pressing of AV button on the Remote Control changes the built-in test patterns on screen as described below
in SERVICE MODE.
SELF DIAGNOSTIC FUNCTION
Press “9” button on Remote Control during display of adjustment menu in the service mode. The diagnosis will begin to check if interface among IC’s are executed properly.
ENTERING TO DESIGN MODE
1) Select the Service mode
2) While pressing CALL button on Remote and press MENU button on TV.
3) Press MENU button on TV.
When QA02 is initialized, items “OPT0”, “OPT1 ” and "OPT2" of DESIGN MODE are set to the data of the representative model of this chassis family.
Therefore, because ON-SCREEN specification remains in the state of the representative of model. This model is required to
reset the data of items “OPT0”, “OPT1 ” and "OPT2".
 SELECTING THE ADJUSTING ITEMS
Every pressing of CHANNEL DOWN button in the design mode changes the adjustment items (UP button for reverse order)
ADJUSTING THE DATA
Pressing of VOLUME UP or DOWN button will change the value of data.

POWER SUPPLY CIRCUIT 
CLICK ON THE IMAGE TO ZOOM IN
Posted By: FRANK at 02:59
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