Question about Flat Panel Televisions
lcd tv exploded circuit board seems to have been destroyed
is it possible to buy another one
when I turn off and then Turn on after 10 minutes the TV notwork(by using remote or touch button). I try to disconnect power supply andthen reconnect and waiting a couple of minutes and turn on but no work (nosound and black desktop) .I repeat this procedure many times so some timework and sometimes not work. please help me to solve this problem
Posted on Aug 28, 2011
I have read everything I can find on the net about this problem for Polaroid TLX 04240b TVs (most, like mine, bought from Wal-Mart on Black Friday after Thanksgiving). I thought I was on a hot lead when I changed a 220uF 450v capacitor, but I still had the same problem. I saw a short post from somewhere else on this Fixya web site (sometimes I can find it again and sometimes I have trouble locating it) that said someone flipped a tiny switch on their circuit board and the problem was gone. I did the same thing and my set has been working fine. They had said their set was on for over 8 hours two days in a row when they posted. The other night my daughter left our set on over night for 20 hours and the picture still was working great. If you look through the top of the set when the picture is on you can see some white light at several locations, when the screen goes blank the white lights go out and a red LED light can be seen. If you take off the plastic cover on the back (3 screws) and then take off the metal cover (3 screws) this red LED light is on the upper circuit board in the lower left corner. Just a little to the right of the LED light is a small switch block that has 4 tiny white switches. I turned my set off and took the bottom switch (#4 and had the letters BURN by it) to the right "ON" position, turned the set back on and, so far so good. PLEASE NOTE!!! I know almost nothing about how transistor circuits work. I have no idea what the switches do or what long term effect this might have on the set. The set was only good as a paper weight before so even if this only fixes the set for a short time it was at least worth a try for me. Does anyone know what those switches are supposed to be for????
Posted on Aug 13, 2009
Testimonial: "Great information, thanks! "
SOURCE: 37"scott lcd tv power supply
We repaired ours for about $5. We have a page with pictures showing the compnents replaced.
Hope it helps!
Posted on Sep 02, 2009
philips has a problem with bad caps(swollen)in power supply-try shopjimmys.com enter model number-scroll down til you find power supply-order it simple to put in.if they do not have it write down part number then google it to find one--you also can change the bad caps yuorself if you are handy with a soldering iron
Posted on Sep 11, 2009
You'll find some Samsung power supply boards here : http://www.usefulparts.com/index.php?main_page=index&manufacturers_id=11&sort=20a&filter_id=98&alpha_filter_id=0
but you have to open your TV first and find out model number
Posted on May 10, 2010
My Sony Bravia LCD Model-KVL37S400A is not getting the Main Power supply. The LCD is not getting switched on. When i am trying to switch on the set nothing is happening.
Posted on Dec 24, 2010
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