I have a new Memorex Flat Screen TV, and it takes about 10 seconds for the picture and sound to appear when it's turned on. Is this normal in a new TV, or fixable? The TV was a gift and is rather heavy, so although it is under warranty, it would be complicated to return it. Thanks!
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Re: Delay turning on
This model uses a flat screen picture tube, and it could be that it is normal for the tube to take that long to warm up. It is also why the set is rather heavy. If you are able to return it, however -- I would opt for a "name brand" set that can at least be repaired when it breaks down. Check out consumer reports December issue for suggestions.
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I found your site confusing. If you had read my post, you would have noticed that my problem referred to a 15" flat screen 'CELLO' .TV/DVD combo. I had sound but no picture. When switched on, the screen lit up and the word CELLO appeared then the sreen went black
How old is this TV?
Sounds like it has high voltage failure.
(If you hold your hand on the screen when you try and turn it on, do you feel the static? )
Unless the set is over 10 years old, I would overhaul the high voltage circuit. Should cost under $200 at a shop.
Your power supply is going south, I have an old sony with the same problem. The voltage level drops and does not have enough 'kick' to start. It will work better when it is warm. The module will need to be replaced.
You have a bad connection on the CRT board thats mounted on the end of the picture tube it sounds like, or the socket on that board that plugs into the TV set is intermittant or has a bad solder connection on it. Good Luck
Usually that symptom is caused by cracked solder joints on the vertical output IC. As the IC starts heating up, the picture starts breaking up at the top with several "dancing" dark lines appearing, the top scrunches down and then when the vertical quits altogether, the screen goes completely black. A good slap on the side of the TV might make it happen faster or clear it up temporarily. If you have experience working on PC boards then you can resolder the pins of the vertical output IC but if you have never soldered parts on PC boards then allow a qualified tech to handle it for you.