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Contact any service technician. This is a very very bad symptom with LCD TVs.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Sounds like the power supply board is going out on it. I'm a t.v. repairman and many times, I just replace the capacitors on the power supply board and they work great. If you aren't qualified do not attempt this yourself. High voltage will kill. Not worth it, take it into a shop.
First check for a faulty capacitor on the power supply board as it sounds like that could be the first place to start. Before you touch any capacitors PLEASE find articles on the internet concerning discharging them as one stray discharge incorrectly could not only destry your tv but hurt you or even KILL!!! Ignore any articles that tell you to use a screwdriver. Good luck.
Had the same problem. Purchased Haier 42" model 42EP24S from Sears and it broke in 1 1/2 years. Couldn't find anyone to fix it so I ordered part Service Kit: TV-3940-01 from www.searspartsdirect.com the cost was $150.00. If your warranty is up and you're okay with doing your own work. :-)
Replaced 3 boards (instruction included) and my tv is back in action.
i was watching tv and in the middle of the show the screen went black, but there still was sound. i turned it off thinking it was the cable for that program and when i turned it back on several hours later it still had no picture all connections are good.
Mine is a Haier 42in Plasma and the same thing just happened 12/31/07 - almost 2yrs old to the day. Picture went black in the middle of a movie. Sound works. There is power, remote will seem to turn on/off but screen remains black. What are standard repair costs that can be expected? I will call the 877 number tomorrow and will update with what I find out.
My experience with a Haier Plasma 42EP24S is that they have weak software chip that goes bad and can cause a number of symptoms from picture with no sound, will not recognize video inputs, or my current problem tv turns on and off irratically. This is the second time i have replace this chip, which is the socketed chip on the vga/component/dvi input circuit card. Last time i had this problem i ended up fixing it myself because sears took over 3 weeks and still could not figure out the problem. I am working on obtaining this chip, probally get about a dozen so if anyone thinks this may fix there problem as well i my have some for sale. [email protected] of Malobicky Digital Systems.
There is a easy fix - Most of you purchased your television at Sears or BrandsSmart Stores - No picture but you can hear sound - the part you need is the upgrade kit - part: TV-3940-01 - the part is not always available.