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 !

Monday, 11 March 2019

SONY KDE-37XS955- 42XS955 SERVICE MODE AND POWER SUPPLY CIRCUIT

SONY KDE-37XS955- 42XS955 SERVICE MODE AND POWER SUPPLY CIRCUIT.


Service mode
1. How to Enter Service Mode
1) Turn on the main power switch to place this set in standby mode. (The LED will light red.)
2) Press the buttons on the commander as follows to enter service mode.
(DISPLAY) > (POWER) > (DIGIT 5) > (VOLUME +)
2. Press the JUMP key on the commander three times.
WHITE BALANCE ADJUSTMENT
When the Panel or DE1 Board is replaced or is repaired, W/B should be adjusted.
Measurement equipment
1. Color analyzer (CA-100 manufactured by MINOLTA)
2. Signal generator (ASTRO DESIGN VG-828D)
Measuring procedure
1. Dab the W/B adjustment jig (CA-100) at the glass face of the panel.
2. Connect the Signal generator (VG-828D) to the component terminal.
3. Input All-white signal (70%).
4. Make the settings as follows.
• Set the quality mode to PRO.
• Set the PICTURE to MAX.
5. Set the color temp, be adjusted cool.
6. Adjust the color temperature of the “highlight” side with the following items of service mode menu, fixed a avlue of one of RGBs 255.
*Operation Register
Service mode “53 FHP_I_1”
36 : RGAIN ×××
37 : GGAIN ×××
38 : BGAIN ×××
Note: Refer to section 2-1-3 for adjustment in service mode.
7. Adjust Cool, Neutral, Warm of each color temperature.
Adjustment target values:
MODE
x
y

COOL
0.2684 ± 0.003
0.2700 ± 0.003
13550K + 0MPCD
NEUTRAL
0.2849 ± 0.003
0.2931 ± 0.003
9300K + 0MPCD
WARM
0.2951 ± 0.003
0.3044 ± 0.003
8000K + 0MPCD

How to reset TV to factory settings
Turn on the TV. While holding down the RESET button on the remote control, press the POWER button on the right side of the TV. (The TV will turn itself off, then back on again.) Release the RESET button.
Lost password
In the password screen enter the following master password: 4357. The master password clears your previous password; it cannot be used to temporarily unblock channels.
POWER SUPPLY CIRCUIT 
CLICK ON THE IMAGE TO ZOOM IN
Posted By: FRANK at 05:39
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