My sylvania sled550-uhd tv turns on has sound, image stays probably 20-40 secs then fades away and get red, blue, white, green loop would it be a bad T-con board or other problems?

SOURCE: Fade to Blue (same as Green Arcs?)

you can turn the Screen controls down a little bit, but I suspect you will need to replace all 3 crts as most of these crt arc sets require all 3. EXPENSIVE if crts are even still available.

SOURCE: Red,Blue,Green Image

YOu have convergence issues. Ok first question. IN your setup menu do you have the convergence option/ if you DO not then it can be a specail fusable link. fl231 if you do. next question do the picture bow in at the middle. if you do then it possibly a convergence power supply issue. next if you go into setup convergence does the crosshairs adjust up or down left to right on both blue and red. I if so then theres is a chance that it can be a convergence adjusment or a amplifer problem AS always THIS SET CAN GENERATE LEATHAL 380 VOLTS EVEN WITH SET UPLUGED SO BE CAREFULL.

SOURCE: my sylvania tv changes from red to green to blue

graphics prosser is faulty

Bud Martin

• 11361 Answers
• Posted on Jun 16, 2010

SOURCE: tv would not turn on

You need to check the output voltages of the power supply module which will be the first place to start.
Read about troubleshooting here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://s807.photobucket.com/home/budm/allalbums

Parts: www.shopjimmy.com

Bud Martin

• 11361 Answers
• Posted on Oct 24, 2010

SOURCE: I have a white /

It does sounds lkie the symptom of bad T-CON board, you can try cooling it with electronic freeze spray for troubleshotting, more likely to have bad IC, most repair I do is due to shorted out DC filter caps such as the one in INSIGNIA/DYNES NS-LCD37HD (backlight is on but no picture due to bad T-CON board):
http://s807.photobucket.com/albums/yy352/budm/Insignia%20NS-LCD37HD-09/
I spent many hours to locate the shorted out surface mounted caps it was time consuming becuase they are in parallel, but Iwas able to find it since I do not want to spend $80 for a used board and I have nothing to lose.
http://www.shopjimmy.com/catalogsearch/result/?q=320WF01C

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

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

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.

Please post back what you find.