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 !

Wednesday, 13 February 2019

PHILIPS 43PFH4082-96 HOW TO ENTER THE SERVICE MODE, SOFTWARE UPDATE, SMPS SCHEMATIC

Philips 43PFH4082-96 How to enter the service mode, software update, SMPS schematic


How to remove the stand and the back cover – Philips 43PFH4082 – 43 inch LCD TV, firmware update, power schematic
How to remove the stand, and the back cover
Remove the fixation screws [1] that secure the stand 2. Take the stand bracket out from the set.
How to remove the back cover
1. Use electric screwdriver to dismantle 7PCS Ф3×6mm screws from back cover.
2. Put removed screws at appointed material box. Do not mix it with others material
3. After self-check OK, flow it into next station by foot switch.
Disassemble Back Cover-2 1. Take off screws with electric screwdriver. 2. Categorise and place removed screws at the appointed material box. Do not mix with other material. 3. Both hands respectively grasp the middle of left and right sides of back cover-M, lift the right side of back cover to separate the buckle on lower right side of back cover-M, from back cover-L. Then Pushing back cover-M toward right and up to make the buckle on the lower left side of back cover-M separate from back cover-R. Take out power cord from the slot and then take down back cover-M and put it on the mat of circulated cart. 4. After self-check OK, flow it into next station by foot switch.
Disassemble Wire
Use diagonal pliers to cut off 2pcs cable ties from the baffle and place them at appointed position. 2. As figure show, tear off fabric tapes from wires and place them at appointed position. 3. As Figure show, tear off aluminium foil from FFC wire and place them at appointed position. 4. Unplug all wire terminals from motherboard connector. 5. Unplug rocker power switch and power cord from the slot of back cover. 6. Take down power cord and LVDS wire, categorise and place them at appointed position orderly.
Factory Mode
Press the following key sequence on a standard RC transmitter: “1999” directly followed by MENU,  To perform extended alignments.
Software Upgrading and Panel Code
Operations and procedure of software upgrading:
1). Changed the file name to "MERGE.bin", then stored software in the FAT32 format blank U disk.
2). Insert USB flash disk into the USB upgrade port, upgrade the software according to the following the operating instructions:
Select AIR or DTV signal source, press Menu key to pop up the main menu, then choose.
Select CHANNEL, press right key or OK key to enter.
Select Software Update (USB), press right key or OK key to enter.
Software update menu will pop up when press confirm key, then select “Yes” to confirm:
Method 2： Keep pressing VOL+ and CH+ keys on the machine panel, power on the machine, the standby light flashes quickly after about 5 seconds, standby light extinguish and turn into lighting after about a minute, means that the upgrade is completed.
 Note:
* When the machine Upgrading (U disk light flash), do not remove U disk or switch off the power, otherwise it will destroy the software and lead cannot upgrade.
* The machine must be power off when inserted or pulled out U disk, to avoid U disk or damage the machine.
Panel Code
Press the following key sequence on a standard RC transmitter: “1999” directly followed by MENU, can see the panel type information from factory menu, see the Panel PN from the configuration table.
43PFH4082/96 - Panel Type K430WDK3-LA260A4 - Panel PN 7422-430LGK-385AK041-F
SMPS and sub-power schematic
Power Supply Unit
All power supplies are a black box for Service. When defective, a new board must be ordered and the defective one must be returned, unless the main fuse of the board is broken. Always replace a defective fuse with one with the correct specifications! This part is available in the regular market.
Consult the Philips Service web portal for the order codes of the boards.
Important delta’s with the platform are:
• New power architecture for LED backlight
• “Boost”-signal is now a PWM-signal + continuous variable The control signals are:
• PS-ON
• Lamp “on/off”
• DIM (PWM) (not for PSDL)
In this manual, no detailed information is available because of design protection issues.
• +12 output (on-mode)
• +12V_audio (audio AMP power)
• Output to the display; in case of
- IPB: High voltage to the LCD panel
- PSL and PSLS (LED-driver outputs)
- PSDL (high frequent) AC-current.
The diversity in power supply units is mainly determined by the diversity in displays.
The following displays can be distinguished:
• CCFL/EEFL backlight: power panel is conventional IPB
• LED backlight:
- side-view LED without scanning: PSL power panel
- side-view LED with scanning: PSLS power panel
- direct-view LED without 2D-dimming: PSL power panel
- direct-view LED with 2D-dimming: PSDL power panel.
PSL stands for Power Supply with integrated LED-drivers.
PSLS stands for a Power Supply with integrated LED-drivers with added Scanning functionality (added microcontroller).
PSDL stands for a Power Supply for Direct-view LED backlight with 2D-dimming.
DC/DC Converters
The on-board DC/DC converters deliver the following voltages(depending on set execution):
• +5V-SB, permanent voltage for the Stand-by Power system
• +3V3-STANDBY,voltage for IR/Key board
• +12V, input from the power supply for the panel common(active mode)
• +3V3-EMMC, +V-EMMC-IO, voltage for EMMC when TV on
• +1V5-DDR, +VREF-A2-DQ,, +VREF-A2-CA, voltage for DDR
• TUNER_3V3, supply voltage for tuner
• +5V-SW, input intermediate supply voltage for USB Power
• +12V-AUDIO1 for the AUDIO AMP
• +3.3VA_T2, +1.2V_T2 voltage for Demodulator IC channel decoder
Video and Audio Processing - MSD3463
The MSD3463 is the main audio and video processor (or System-on-Chip) for this platform. It has the following features:
1. Worldwide multi-standard analog TV demodulator
2.PAL/SECAM/DVB-T/DVB-T2 /DVB-C demodulators
3.1920*1080@60Hz direct drive
4. Powerful CPU core
5. A transport de-multiplexer
6. A muti-standard video decoder
7. Rich format audio codec
8. HDMI1.4 receiver
9. MHL input
10. 2D converter
11. PWM dimming (LED backlight)
12. Two-link LVDS,
The MediaTek MSD3463family consists of a DTV front-end demodulator, a backend decoder and a TV controller and offers high integration for advanced applications. It integrates a transport de-multiplexer, a high definition video decoder, an audio decoder, a –link LVDS transmitter, and a NTSC/PAL/SECAM TV decoder .The MSD3463 enables consumer electronics manufacturers to build high quality, low cost and feature-rich DTV.
World-Leading Audio/Video Technology: The MSD3463 supports Full MPEG2/4/H.264 video decoder standards, and JPEG. The MSD3463 also supports MediaTek MDDiTM de-interlace solution which can reach very smooth picture quality for motions.
The special color processing technology provides a natural, deep colors and true studio quality video. Moreover, theMSD3463 family has built-in high resolution and high-quality audio codec.
Rich Features for High Value Products: The MSD3463 family enables true single-chip experience. It integrates high-quality HDMI1.4, high speed VGA ADC, a-link LVDS, USB2.0 receiver , and ATSC/DVB-T/DVBC/DTMB/ISDB-T demodulators.
All New FHD@60Hz Experience: The MSD346 family provides consumers with FHD 60Hz direct drive.
WW Common Platform Capability: The MSD3463 family supports ATSC, DVB-T, DVB-C, and ISDB-T demodulation functions. It reserves transport stream inputs for external demodulators for other countries or areas. TV maker can easily port the same UI to worldwide TV models. First-class adjacent and co-channel rejection capability grants excellent reception. Professional error-concealment provides stable, smooth and mosaic-free video quality.
Posted By: FRANK at 01:24
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