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, 6 February 2019

PHILIPS 50PFL4909 50 INCH PLASMA TV - HOW TO ENTER SERVICE MODE - ADJUSTMENTS - FIRMWARE UPDATE - INITIALIZE

How to enter Service Mode - Adjustments - Firmware update - Initialize - Philips 50 inch Plasma TV - 50PFL4909


Service Mode – Adjustments – Philips 50 inch (50”) Plasma TV – 50PFL4909
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 as follows.
3. To cancel or to exit from the Purity Check Mode, press [CH RETURN] or [PREV CH] button.
White Balance Adjustment
The White Balance Adjustment should be performed when replacing the display Panel or Digital Main CBA.
Purpose: To mix red and blue beams correctly for pure white.
Symptom of Misadjustment: White becomes bluish or reddish.
1. Operate the unit for more than 30 minutes.
2. Enter the service mode.
3. Press [VOLUME DOWN] button three times on the remote control unit to select “Drive setting” mode.  “Drive-” appears in the screen.
4. Set the color analyzer at the CHROMA mode and zero point calibration. Bring the optical receptor pointing at the center of the display-Panel.
[The optical receptor 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.
7. Press [CHANNEL UP/DOWN] buttons to adjust the color temperature becomes 12000°K (x= 0.272 / y= 0.278 ± 0.003).
8. Press [1] button to select the “HDR” for High Drive Red adjustment (“HDR” appears in the screen.) and press [CHANNEL UP/DOWN] 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 [CHANNEL UP/DOWN] 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 [CHANNEL UP/DOWN] 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 [CHANNEL UP/DOWN] 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 [CHANNEL UP/DOWN] buttons to adjust the color temperature.
15. If necessary, adjust the “LDB” or “LDR” again.
16. Press [VOLUME DOWN] button to shift to the “Debugging Message” mode.  If there is no message under “[WB]” section, this adjustment completes.  If “Drive settings are NG. Retry again.” Is displayed, repeat above steps from 5. to 15. Then check “Debugging Message” again. If “Drive settings are NG. Retry again.” is displayed, replace the display Panel or Digital Main CBA.
17. To cancel or to exit from the White Balance Adjustment, press [CH RETURN] or [PREV CH] button.
HOW TO 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.
NOTE: Disconnect any devic1. Turn the power on.
2. Enter the service mode.   To cancel the service mode, press [Power ] button on the remote control unit.
3. Press [BACK] button to enter the Control Panel Key Confirmation Menu.
4. Press all buttons on the control panel.
5. Press [INFO] button to proceed with the self check mode.
6. Make sure to confirm the "INITIALIZED : OK" appears in the green screen.
7. Unplug the AC Cord and plug it back on again.
FIRMWARE RENEWAL MODE
Turn the power off and unplug the AC Cord.
2. Insert the USB storage device to the USB port.
3. Plug the AC Cord and turn the power on.
4. After few seconds, the menu mode will appear in the screen.
Note: After 30 seconds without an operation, the menu mode will disappear automatically.
To display the menu mode again, press the [MENU] button on the remote control unit.
5. Select “Setup” and press the [OK] button to display the setup menu.
6. Select “Software”.
7. Select “Software update”.
8. Select “USB”.
9. Press the [OK] button on the remote control unit to enter the update mode.
[Update file selection screen appears as follows.  (Files included in the USB storage device are displayed.)]
Note: To cancel the update mode, select “Cancel” and press the [OK] button.
10. Select the file and press [OK] button.
11. The update will start.
If the above screen isn’t displayed, repeat from step 1.
12. Select “Yes” and press the [OK] button to update.
Note: Do not remove the USB storage device or turn the TV off while update is in progress.
13. When the firmware update is completed  it will be indicated on the screen.
Remove the USB storage device from the USB port.
Turn the power off and turn the power on again.
Posted By: FRANK at 05:34
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