Philips 29PFL5537, Philips 32PFL5537 - How to enter service mode, software update, SMPS and back-light inverter circuit diagram

Philips LED TV - 22PFL5557 / V7, 22PFL5957 / V7; 24PFL5557 / V7, 24PFL5957 / V7; 29PFL5537 / V7, 29PFL5937 / V7; 32PFL5537 / V7, 32PFL5937 / V7.

Service Procedure
Factory Menu
Follow the below steps to pop-up the Factory Menu in case of “Factory Key” is disabled:
- press Remote Control key “MENU” to display main menu.
- press the subsequent Remote Control keys “2”, “5”, “ 8” and “0 .”
Press Remote Control “OK” key to enter the submenu.
Press Remote Control “Menu” key to go back to the previous menu.
Press Remote Control “RIGHT” or “LEFT” key to change the values.
Press Remote Control “OK” key run the function.  (OK: Current source has been calibrated)

SMPS schematic (Click on the schematics to zoom in)

Back-light inverter

Software Upgrade
Method-1
1. Save the new software file(*.bin) in the root directory of USB, and modify it’s name as
MERGE.pkg.
2. Plug in the USB.
3. Power on the set.
4. Connect the USB to TV set.
5. To enter into FACTORY MENU go to USER MENU, press the subsequence remote control keys "2","5","8","0”
6. Go to Software Update (USB) , press OK button of Remote, then press left bottom to select update the software.
7. After upgrading the software, you should Switch on the TV set by the remote control or the key-press.
METHOD - 2
Prepare Mstar ISP Utility tool for update.
1. Connect the PC to the serial connector on board using a special serial device (USB or COMx);
2. Provide the a correct voltage to the board;
3. Start “ MStar_ISP.exe”, and set the parameters.
select Port Type: USB, the ISP Slave address: 0x92, Serial Debug Slave Address: 0xB2)
4. Press “Connect” button to connect the communication between the PC and TV set.
5. Press “Read” button to select the SW that you want to update.
6. Press “Auto” and "Run" button to update the SW as the picture 3,and then wait it finish, it is about four minute.

DC-DC check

Before power on, check the board according to the relevant block diagram and circuit diagram, and make sure that no serious error should destroy the board. For example, the output of DC/DC and LDO should not be shorted to ground. Supply a suited voltage and power on, then check the voltage according to the relevant block diagram, circuit diagram and voltage spec. the error should less than 5% .For example, the voltage for main chip(3.3V, 2.5V,1.8V,8V,etc.), the voltage for DDR2 , the voltage for amplifier etc:

Panel ID check and modify

There is different ID stored in the NVM depended on different Panels. It can be checked and modified in Factory menu > SW INFO.