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!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Friday, 8 March 2019

PHILIPS LED TV 55PFL3907 SERVICE MODE INITIALIZATION POWER SUPPLY (LED)

PHILIPS LED TV 55PFL3907 SERVICE MODE INITIALIZATION POWER SUPPLY (LED)

 LED TV

PHILIPS 55PFL3907

SERVICE MODE INITIALIZATION POWER SUPPLY (LED)

How to set up the service mode
Service mode
1. Turn the power on.
2. Press [0], [6], [2], [5], [9], [6] and [INFO] buttons on the remote control unit in this order. The following screen appears.
Purity Check Mode
This mode cycles through full-screen displays of red, green, blue, and white to check for non-active pixels.
1. Enter the service mode.
2. Each time the [7] button on the remote control unit is pressed, the display changes
The White Balance Adjustment should be performed when replacing the LCD Panel or Digital Main CBA.
Do not use the color analyzer for this model.
Make sure to use the color meter or spectroradiometer.
Otherwise, you will not be able to run the proper White Balance Adjustment for this model.
White Balance Adjustment
Purpose: To mix red and blue beams correctly for pure white.
Symptom of Misadjustment: White becomes bluish or reddish.
ITEM
SPECIFICATION

Color temperature
x= 0.272 ± 0.010 (±4%)
y= 0.278 ± 0.012 (±4.5%)
Internal pattern
Input Signal
(30/50/70% raster)
Measurement point
Screen center
M. EQ.
Color meter or
Spectroradiometer
MODE setting of TV
Ambient

Shipment setting/
temperature
Retail MODE
25°C ± 5°C

1. Operate the unit for more than 60 minutes.
2. Enter the service mode.
3. Press [VOL -] button three times on the remote control unit to select “Drive setting” mode. “Drive” appears in the screen.
4. Set the color meter or spectroradiometer as shown below.

Note: The color meter or spectroradiometer must be set perpendicularly to the LCD Panel surface.
5. Press [3] button to select the “HDB” for High Drive Blue adjustment. (“HDB” appears in the screen.)
6. Press [MENU] button. The internal Raster signal appears in the screen. (“Internal(Single)” appears in the upper right of the screen.
7. Press [CH + or -] buttons to adjust the color temperature becomes 12000°K [x= 0.272 ± 0.010 (±4%)/ y= 0.278 ± 0.012 (±4.5%)].
8. Press [1] button to select the “HDR” for High Drive Red adjustment (“HDR” appears in the screen.) and press [CH + or -] buttons to adjust the color temperature.
9. If necessary, adjust the “HDB” or “HDR” again.
10. Press [6] button to select the “MDB” for Middle Drive Blue adjustment (“MDB” appears in the screen.) and press [CH + or -] buttons to adjust the color temperature.
11. Press [4] button to select the “MDR” for Middle Drive Red adjustment (“MDR” appears in the screen.) and press [CH + or -] buttons to adjust the color temperature.
12. If necessary, adjust the “MDB” or “MDR” again.
13. Press [9] button to select the “LDB” for Low Drive Blue adjustment (“LDB” appears in the screen.) and press [CH + or -] buttons to adjust the color temperature.
14. Press [7] button to select the “LDR” for Low Drive Red adjustment (“LDR” appears in the screen.) and press [CH + or -] buttons to adjust the color temperature.
15. If necessary, adjust the “LDB” or “LDR” again.
16. Press [PREV. CH] button to enter the service mode again.
17. Press [INFO] button on the remote control unit to shift to the self check mode screen. If “W/B OK” is displayed, this adjustment completes.
If “W/B NG” is displayed, press the [VOL -] button to shift the “Drive setting” mode. Then repeat above steps from 5. to 15. Check the self check mode screen. If “W/B NG” is displayed, replace the LCD Panel or Digital Main CBA.
18. To cancel or to exit from the White Balance Adjustment, press [PREV. CH] button.
INITIALIZE THE LCD TV
The purpose of initialization is to place the set in a new out of box condition. The customer will be prompted to select a language and program channels after the set has been initialized.
To put the program back at the factory-default, initialize the LCD TV using the following procedure.
1. Turn the power on.
2. Enter the service mode.
3. Press red button on the remote control unit to initialize the LCD television.
4. After confirming that “INITIALIZED FINISH” appears on the screen, unplug the AC Cord.
- To cancel the service mode, press [POWER ] button on the remote control unit.
POWER SUPPLY CIRCUIT 
CLICK ON THE IMAGES TO ZOOM IN
Posted By: FRANK at 02:36
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