Jvc tv screen went white then blue no picture no sound tv was on then nothing tried turning off & on & unplugging still nothing but a blue screen

SOURCE: TV shut off will not stay on.

Sounds as though you have a video problem. It may be the convergence chips. The TV is shutting down do to a default in the circuit ( the set knows there is an error of somekind so it shuts down to protect itself). This is a problem that needs a pro trouble shooter since it could be in about any board. Sorry I couldn't help more
Ed
NC Electronic
Mills, Wyoming

SOURCE: JVC LCD TV LT-42X688-powers on, blank screen. no picture,no sound

You most definately have bad capacitors in the power supply. try and get it repaired as soon as possible, not an expensive repair that iv'e seen.

SOURCE: JVC LCD TV LT-42X688-powers on, blank screen. no picture,no sound

Hi , I have the same problem with my LT-42X688,so i called the service of my extended warranty provider . the TV technician just left and told me the motherboard is the problem. he said its the third one this week he has seen with the same symptoms. he ordered the motherboard and i've got to wait 5 to 7 work days before the part will be in . I will keep you posted when the guy will return.

SOURCE: I have a JVC LT-42X579 TV. I got home tonight and

This is common problem of the failure of power supply board inside TV. You need technician to figure out this problem.

Bud Martin

• 11361 Answers
• Posted on Dec 25, 2009

SOURCE: RCA L26WD21 No picture/white screen but still have sound

It sounds like the LCD controller board went out, look inside to see if the cable may have come off the LCD controller board. You can look and see what it looks like here: http://www.shopjimmy.com/catalogsearch/result/?q=RCA+L26WD21+
Please post back what you find.