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 46PFL5705D – AUDIO OUTPUT AND POWER SUPPLY SCHEMATIC- HOW TO ENTER SERVICE MODE

Philips 46PFL5705D – audio output and power supply schematic- How to enter service mode

Service mode – initialization – firmware update procedure – SMPS and audio output section circuit diagram - Philips 46PFL5705 - 46" LCD TV.
Used ICs: R2A15120FA-WOOT (Audio output) – DDA001B1DR2G – DNP005 – DDA005DCQR – DDA006DR
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.  If Main Fuse (F1) is blown , 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.  For continued protection against risk of fire, replace only with same type 5 A, 250V fuse.  The voltage for parts in hot circuit is measured using hot GND as a common terminal.
SMPS BLOCK DIAGRAM

SMPS PWB - TOP and BOTTOM SIDE
AUDIO OUTPUT CIRCUIT DIAGRAM
CLICK ON THE PICTURES TO ZOOM IN
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.
1. Turn the power on.
2. Enter the service mode.  To cancel the service mode, press [Power] button on the remote control unit.
3. Press [INFO] button on the remote control unit to initialize the LCD television.
4. "INITIALIZED" will appear in the upper right of the screen. "INITIALIZED" color will change to green from red when initializing is completed.
5. Unplug the AC Cord.
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.
Firmware Update Procedure
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 on 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 update”.
7. Select “Updates”.
8. Select “USB”.
9. Press the [OK] button on the remote control unit to enter the update mode.  Update file selection screen appears.
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 and the status will appear on the screen.
Note: 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 indicted on screen.
Posted By: FRANK at 04:48
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