Forum > LCD TV forum

SONY KDL-S40A12U FLASH DUMP-SOLVED

(1/3) > >>

woooow:
Hello, i need flash dump for this tv. The tv respond to commands of remote and buttons on the panel. Sound also ok, but no picture and menu. Here is details about tv:

SONY KDL-S40A12U WAX CHASSIS

   -MSP4411K-QA-D5-001
   AUDIO PROCESSOR,
   -TPA3004D2PHPR
   STEREO POWER AMPLIFIER,
   -CXA2163AQ-T6
   CHROMA DECODER,
   -CXA2069Q-TL
   A/V SWITCH,
   -SDA5550M-QB-T
   MAIN MICRO PROCESSOR,
   -K6F2008V2E-LF70000
   SRAM TELETEXT/DATA STORAGE,
   -M24C32-WMN6T(B)
   SERIAL EEPROM,
   -SVPEX-SREVB
   VIDEO PROCESSOR,
   -K4D263238G-VC36T
   SDRAM,
   -M52347FP-TE
   PC SYNC PROCESSOR,
   -M24C02-WMN6T(B)
   SERIAL BUS EEPROM
   -LTY400WT-L06
   -M27W401 PLCC32 FLASH

E Parton:
Hi ...
Just read your fault report on this TV ..which I assume is an LCDTV
I have to adMit I'm not familliar with this model ...but its a bit unclear from your message as to the backlight condition ..
Is the backlight lit or not ?
If its not ..and you still have sound I'd assume this to be an invertor issue ..
can you clarify ?
rgds
Evan

E Parton:
..Further to my first reply ..
Assuming the invertor is at fault ..
It is possible to pick up both master and slave used pcbs from ebay ..for around £30 the pair plus postage on
..Possibly UK only ..but worth a look ..
Also its known that the invertor transformers and definately the opto couplers on these boards are suspects ..and if I have the right model ...then cold checking and replacing any found faulty might well provide a solution.
rgds
Evan

woooow:
No, its a software problem. The lamps switch on. its not a invertor problem. The tv start, sound is ok, but not picture and menu. I need a dump of a flash memory. The memory is in socket ot D-SUB board. I check voltage of every board and everything is ok. Thank you for your answers.

E Parton:
..Thanks for clarifying ..
In that case I wouldn't automatically assume its a firmware issue ..
Id go for the LVDS driver pcb ...
Check any surface mount fuses on the board for open circuit ..
If you find one ..check for any dead shorts to ground which could have caused it to blow ..
If non found ..just replace the fuse ..
If a short is found ..check all surface mounted decoupling caps for cracks or discolouration by visual inspection with an eyeglass ..
Again ..if nothing found ...then suspect the chips ...and start hunting for a replacement lvds board on ebay..
hope you get a result
Evan

Navigation

[0] Message Index

[#] Next page