Question about LG Televison & Video
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Posted on Jan 02, 2017
SOURCE: Samsung Plasma 42" TV - 2006
Hi, this is quite a common problem for plasma screens and LCD screens. The fluroscent backlight is more than likely faulty and would need replacing. The best thing to do is to take it to a service centre because there are no user servicable parts inside the plasma.
Posted on Nov 01, 2008
Hold a flash light to the screen after it goes off and see if you can see a faint picture. Sounds like your backlight might be cutting off. Repair can be expensive but some of the newer units don't require the entire LCD to be replaced.
Posted on Sep 27, 2009
SOURCE: The picture on my Panasonic
Bad looking capacitors?
If the picture goes off, but the TV keeps having sound, then what is failing is usually either horizonthal or vertical deflection circuit, flyback, or high voltage multiplier. PSU may be responsible, but that is not the first possible culprit. Other faults like the AV tuner, or terminal input, are also possible but quite uncommon.
Repair is done replacing horizintal output transistor or IC, checking flyback transformer solder joints and windings, testing voltage out from PSU.
The most common fault causing the problem to go and come back after cooling is horizontal or vertical IC. Repair is done desoldering old IC and soldering new one with coolant paste. The soldering joints in deflection area, yoke and flyback must also be tested. As said, PSU is not really common fault causing this, let alone the capacitor thing.
The repair starts at about $100 (£80 in UK), and can go up in price, depending on the problems encountered by the tech. Repairing deflection problems in old CRT TVs is generally not worth anymore nowadays.
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Posted on Oct 19, 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.
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Posted on Nov 25, 2010
the picture tube is the problem of your TV so i think you have to go to the electronic technician to solved the problem of your TV because you cant solve it by your own.. your TV needs professional electronic technician..
Posted on Aug 29, 2011
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