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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Thursday, 7 February 2019

PHILIPS 40PFL4609 – HOW TO ENTER SERVICE MODE – SOFTWARE UPDATE – POWER SUPPLY (SMPS) CIRCUIT DIAGRAM

Philips 40PFL4609 – How to enter service mode – Software update – Power Supply (SMPS) Circuit diagram


Philips 40PFL4609 LED HDTV 40 inch – Firmware update – SMPS schematic – How to enter Service Mode – How to initialize – White balance adjustment

Philips 40PFL4609/F8 (XA1) A4D2AMA - TYPE A


Philips 40PFL4409/F8 (XA1) A4G2EMA - TYPE B


How to set up the 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.

To exit, press [CH RETURN] or [PREV CH] button.


FIRMWARE RENEWAL MODE

TYPE A

1. 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.

 [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 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; and the status will be displayed.


Remove the USB storage device from the USB port.
Turn the power off and turn the power on again.

TYPE B

User Upgrade (Filename example: TVNB2***_00_PH_XX91_FB1.bin)
Upgrade the firmware only. The setting values will not be initialized.
The User Upgrade and the Firmware Upgrade (Factory Upgrade) will be done by the same file. If you want to upgrade the firmware and initialize the setting values also, add “FACT_” at the beginning of the filename.
If you want to upgrade the firmware only and leave the setting values as they are, eliminate the “FACT_” from the filename.

Update procedure
1. Turn the power on.
2. Press [MENU] button to display Menu.
3. Select “Features”.
4. Select “Software Upgrade”.
5. Select “Upgrade” to display Upgrade screen.
6. Press [OK] button to display Software Upgrade screen.
7. Select “USB” and press [OK] button.
8. Insert the USB storage device to the USB port.

9. Select “Check” and press [OK] button.
10. Select “Upgrade” and press [OK] button to start software upgrade.

11. The update will start and the status will be displayed.

[If the above screen isn’t displayed, repeat from step 1.]

12. When the firmware update is completed; the status will be displayed


Remove the USB storage device from the USB port.
Turn the power off and turn the power on again.

Factory Upgrade (Firmware Upgrade/Flash Upgrade)

Firmware Upgrade

(Filename example: FACT_TVNB2***_00_PH_XX91_FB1.bin)

Upgrade the firmware and initialize the setting values.

The User Upgrade and the Firmware Upgrade (Factory Upgrade) will be done by the same file. If you want to upgrade the firmware and initialize the setting values also, add “FACT_” at the beginning of the filename.

If you want to upgrade the firmware only and leave the setting values as they are, eliminate the “FACT_” from the filename.

Flash Upgrade

(Filename example: ALL_TVNB2***_00_PH_XX91_FB1.bin)

Upgrade the firmware and initialize the setting values along with the factory default such as White Balance, etc.  Before the upgrade, you will need to make a note of all the factory default so you will be able to set it back on the TV after the initialization.

The Flash Upgrade will be done by its unique file.


The User Upgrade/Firmware Upgrade (Factory Upgrade) file cannot be used for this upgrade.

Update procedure
1. Turn the power off.
2. Insert the USB storage device to the USB port.

3. Turn the power on.
4. The update will start and the status screen will be displayed.

[If the screen isn’t displayed, repeat from step 1.]

5. When the firmware update is completed, the status will appear in the screen.


Remove the USB storage device from the USB port.
Turn the power off and turn the power on again.
Service mode initial screen with a word “INITIALIZED” will appear in the screen. The color of the word “INITIALIZED” will change from red to green when initialization is completed.

SMPS SCHEMATIC

Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit.


If Main Fuse (F602) is blown, first check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.






How to Remove / Install Flat Pack-IC

Removal

With Hot-Air Flat Pack-IC Desoldering Machine:

1. Prepare the hot-air flat pack-IC desoldering machine, then apply hot air to the Flat Pack-IC (about 5 to 6 seconds)

2. Remove the flat pack-IC with tweezers while applying the hot air.

3. Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove.

4. Release the flat pack-IC from the CBA using tweezers.

The Flat Pack-IC shape may differ by models. Use an appropriate hot-air flat pack-IC desoldering machine, whose shape matches that of the Flat Pack-IC.

Do not supply hot air to the chip parts around the flat pack-IC for over 6 seconds because damage to the chip parts may occur. Put masking tape around the flat pack-IC to protect other parts from damage.

3. The flat pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each pin or the solder lands under the IC when removing it.

With Soldering Iron:

1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily.

2. Lift each lead of the flat pack-IC upward one by one, using a sharp pin or wire to which solder will not adhere (iron wire). When heating the pins, use a fine tip soldering iron or a hot air desoldering machine.

3. Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). 

4. Release the flat pack-IC from the CBA using tweezers.


With Iron Wire:

1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. 

2. Affix the wire to a workbench or solid mounting point.

3. While heating the pins using a fine tip soldering iron or hot air blower, pull up the wire as the solder melts so as to lift the IC leads from the CBA contact pads.

4. Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). 

5. Release the flat pack-IC from the CBA using tweezers. 

[When using a soldering iron, care must be taken to ensure that the flat pack-IC is not being held by glue. When the flat pack-IC is removed from the CBA, handle it gently because it may be damaged if force is applied.]


Installation

1. Using desoldering braid, remove the solder from the foil of each pin of the flat pack-IC on the CBA so you can install a replacement flat pack-IC more easily.

2. The “*” mark on the flat pack-IC indicates pin 1.  Be sure this mark matches the pin 1 on the PCB when positioning for installation.  Then presolder the four corners of the flat pack-IC. 

3. Solder all pins of the flat pack-IC. Be sure that none of the pins have solder bridges.




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.

[Disconnect any device from the USB Port before you conduct on this procedure.]

TYPE – A

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. 

TYPE B


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 any button on the control panel.
5. Press [INFO] button to proceed with the self check mode.
6. Make sure to confirm the "INITIALIZED FINISH" appears in the green screen.
7. Unplug the AC Cord and plug it back on again.

White Balance Adjustment

The White Balance Adjustment should be performed when replacing the LCD Panel or Digital Main CBA.

Purpose: To mix red and blue beams correctly for pure white.
Symptom of Maladjustment: White becomes bluish or reddish.

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 LCD-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.


(“Internal (Single)” appears in the upper right of 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 LCD Panel or Digital Main CBA.
17. To cancel or to exit from the White Balance Adjustment, press [CH RETURN] or [PREV CH] button
Posted By: FRANK at 02:53
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