Needs a new video board most likely which are expensive. If your set is a large on it's worth the cost of repair, maybe. If it is a small size, like 32 inch, it's cheaper to just replace the set because new ones are now very inexpensive.
SOURCE: no picture just comes sound
sounds like the Backlight has failed, if you look closely at the screen you should be able to see the image changing, but as there is no back light there is no luminescense so it will appear black or grey, It is probably the backlight inverter or element that has failed, if this is within warrany organise with them to fix it for free,
SOURCE: my tv has sound but no picture
If you haven't bricked this unit yet, or paid Syntax/Olevia's highway-robbery price to fix it (and pay STUPID prices to ship it to and fro), there is hope. Despite what Syntax and others say, it IS a replace-able part that can help get your TV to last at least another 12-24 months. During that time, you can save for a new, more reliable and reputable TV.
http://www.lcdparts.net/LCDTVInverterdetail.aspx?InverterOriginal=V144-001
This is a well-known (at least those of us who had ours fail before yours) symptom of a bad backlight power inverter, which, for the LT30HV is a pain in the arse to get to (it's behind the main power distribution board and motherboard w/Pixelworks chip). If you can take apart a tower computer and install I/O cards, you can do this. These parts are made cheaply in China with 64 weld points that fail 100% of the time - and many other 'name' brand LCD TVs use this exact same CCFL backlight inverter. I'm working on posting the procedure somewhere on the net. The procedure shown in MoniServ's website is on a Kreisen set, which looks FAR more easily serviced than the LT30HV.
Good luck,
SOURCE: Vizio 42", have picture for about 5 mins then screen goes black.
also check the power cord wire coming from the back of the tv is loose from the tv side or perfect.
SOURCE: dynex tv no picture screen comes on and then goes black
There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc. Look for 5vdc, 12vdc, and 24dvc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.
SOURCE: I have a Tevion 32"
there is a firware update available from AWA
ernie.awa.com.au/TV/default.aspx
fixed my set with the same problem
cheers
196 views
Usually answered in minutes!
×