All power supply out put volteges ok but no sound and displey
Well, if the power supply is in good working order, you will need to verify that the proper voltages are getting to the main board. If the main board is getting the proper voltages, I would bet you have a defective main board. The video and audio signals are generated on the main board. Expect to pay $100-$150 for a replacement main board.
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Sir
your sony kdl-52s,4100 .you have tested and found that all voltages are normal. THE PROBLEM WITH YOUR SET IS SOFTWARE PROBLEM TRY TO RELOAD SOFT WARE THROUGH THE USB PORT .
SOURCE: My Sony KDL-26S3000 won't turn on it well get stuck in standby
Please see the troubleshooting chart, BU1 board part # A-1268-869-A, cost approx $230.
SOURCE: Sony Bravia KDL-40S20L1 lcd tv has no power no lights nothing
My Sony Bravia LCD Model-KVL37S400A is not getting the Main Power supply. The LCD is not getting switched on. When i am trying to switch on the set nothing is happening.
SOURCE: My Sony KDL-32M3000 has dark
It will be either BM board (Video Processor board) or Tcon Board (top side of panel). I have similar problem...my TV turns on, lamps turns on (you can see them from back side panel holes) but just a dark blue picture appears with no image (like picture when external input is selected without signal), no OSD appears....some times I can heard audio (using Antena).
I'm thinking getting the BM board.
SOURCE: My Sony TV KDL-32M4000 won't turn on. No lights
Yes there is soldered in fuse in the power supply board as shown here:
http://assets.shopjimmy.com/media/catalog/product/cache/1/image/5e06319eda06f020e43594a9c230972d/s/j/sj147409911.jpg
Boards for your tv:
http://www.shopjimmy.com/catalogsearch/result/index/?q=Sony+KDL-32M4000+&stock=all
You need to check the DC outputs of the power supply and inspect the caps.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
Please leave rating if it helps.
SOURCE: tv doesn't turn on ....i
Plasma and LCD TV sets are prone to having capacitors in the power supply section fail. This is the most likely cause for the probem you describe. When capacitors fail your will commonly see one or more of the following symptoms.
Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit.
Here are pictures of capacitors...Notice that the ones below look bloated. They have failed and will need to be repalced. 
Capacitor being replaced! Fairly easy DIY fix. 
Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit
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Where I can get the main board ? that is my gess to
i think stv 8358 causing the problem.
???
http://www.ebay.com/itm/Sony-1-857-227-1...
Those main board are hard to find, gosh. The one on Ebay is $169. Just make sure you buy from a reputable seller w/a reasonable return policy
Those main board are hard to find, gosh. The one on Ebay is $169. Just make sure you buy from a reputable seller w/a reasonable return policy
thank you for your help
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