Question about LG Televison & Video
I have replaced two boards
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Posted on Jan 02, 2017
Your message is pretty old but I'll give you my un-copywrited spiel anyhow;
If it just fails to turn on, the main power supply is probably at fault and without some technical background and a couple of test instruments, you will not be able to do the repair yourself.
What you can do though is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.
Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.
If you see signs of overheating such as discoloration of the board material, it may not be repairable but if you can find a part number on the board, you might be able to buy the power supply and install it yourself.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace or have it done, the power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload.
Posted on Oct 25, 2008
I need more details of your Astar LTV-32ASB so I can help you resolve the problem. It might be the power supply defective according your information. Call me 323-767-6030.
Posted on Mar 05, 2009
Ur tv now power on only have picture few mins,than dead,have sound only?Yes,than the 1 or 2 the long board call the LCD inverter boards are dead.The LCD inverter long boards help the LCD screen to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy 1 or 2 long LCD inverter boards for the replacement.
Posted on Jul 05, 2010
Check you video leads, there may be a bad connection on either end. Removing and replacing may fix it otherwise I would suspect the Sky box as the TV uses the same decoder for most of the video inputs except HDMI of course or S-Video.
Hope that helps.
Posted on Nov 25, 2010
SOURCE: 19' flat screen TV slow
You haven't specified the Brand or Model number of your flat panel tv. Yet I'm answering to this enquiry, assuming that yours' is an ordinary 19" flat screen TV.
For most the TVs, this fault will be due to the base socket of the picure tube. You can locate this socket at the picture tube base card, directly soldered to it. This socket is otherwise commercially known as picture tube base. It connects the picture tube pins to the rest of the circuit, and can be detached from the base of the picture tube by a light backward pull.
You just open your TV and pull out the base card from the picture tube neck. Care should be taken not to shake the board sideways or up and down movement, as this may damage the pins of the picture tube, or can cause a crack in picture tube neck. The neck of the picture tube is very thin, relateve to other part of it, and have a chance to break easly. So be very carefull when detach the board out of it.
Resolder the base socket out of it, detach the Focus wire attached, in some cases, there will be an other wire too, screen voltage wire. Go for a same type and pin confuguration. You can select whichever companys product; provided the pin confuguration. The material used to manufacture it is very important. It should be of good quality; otherwise the fault will occur within a short period of time again.
If you wants any more assistance, get me through Fixya. Ok.
Posted on Nov 25, 2010
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