SOURCE: DARK SHADOW EFFECT UPPER CORNERS OF SCREEN
I would check for dust particles before I attempted any type of repair on the unit.
Dust particles will appear as dark spots that are larger than the size of an individual pixel. It must first be determined if the particle(s) are on the LCD panels or the screen.
SOURCE: Sony WEGA KE-37XS910
This TV has a very expensive panel... we are talking $3000 core charge alone! It comes complete with all the lower buffer boards (which from the sound of it, you are having a problem with). Individual boards for this defect are not available on repair parts list I know of. A panel is what you need, PN: 9-885-063-33
SOURCE: When turning the TV on, the screen appears to be
It can be the T-CON board. Post pictures if you can.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Please see my 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
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 and long life rating such as PANASONIC FM or FC series.
Please post back what you find.
SOURCE: I have Sony kdl46w4100. It
I had a similar problem with my 42 in Philips LCD HDTV. Here was the problem.
My Power Supply Board had several bad capacitors. I opened my TV (warranty was expired of
course) and found four bulged capacitors.
Many electronics companies were sold capacitors that failed in 2-5 years
instead of 10-20. The capacitors fail
prematurely due to a lack of preservatives. Unfortunately, they were installed in all
sorts of devices and cause a wide range of failure problems. Here are some options for you. 1. Have it fixed by a professional 2. Open your TV and find PSB. Check
for faulty caps. If you find some (bulged
or leaking) bad caps replace the entire board. 3. Remove and then replace individual faulty caps. This takes some soldering skill. Caps are inexpensive and if you can take care of it yourself
it will save you hundreds. I have a tip/tutorial
on this site that may also help. It
gives step by step instructions for replacing caps on PSB #715t2432-2. If this is your board you are in luck. It's
called: Fixing the Philips Turns/shuts off on its own problem. Hope this helps and Good luck.
Kaufman605
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