Question about Sony Televison & Video
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Posted on Jan 02, 2017
SOURCE: How to improve picture quality?
are you using an hd source ? hd cable box, satelitte receiver or antenna with the digital channels programmed in. regular tv channels will not look as good as the picture you saw in the store when you bought it. they all use only high definition signals.
Posted on Jan 24, 2009
PICTURE QUALITY IS USUALLY A FUNTION OF IT'S SOURCE. GARBAGE IN GARBAGE OUT.
IF YOU HAVE COMCAST OR SATELLITE AND IT IS NOT HD, YOU NEED TO HAVE AN HD SIGNAL FOR THE BEST PICTURE. THE BEST INPUT IS THRU THE HDMI INPUT. IF YOUR UNIT HAS A GOOD PICTURE WITH YOUR DVD UNIT, THEN THE HAVE A SIGNAL SOURCE ISSUE.
Posted on Jan 30, 2009
Horizontal lines are relatively rare problem in LCD TVs.
The likely problematic areas are:
1) The LCD itself (the micro ICs embedded into the LCD panel structure); that doesn't sound likely based on what you say, but it's not completely impossible. The bad news is it's mostly uncurable.
2) The power board A-1511-322-D G5
Power boards may sometimes cause problems with display, although rarely causing horizontal lines.
I wouldn't start looking here either, but it is certainly a problem to consider.
3) Main board 1-876-561-13 R1506072C
Slightly more possible and yet not quite likely. A high operating temperature and bad SMD soldering process may cause some soldering contacts on the main board to behave differently when the board is cold versus when it heats up. It is very common and may have all kinds of different effects on the TV and the screen.
One way to check for that is with a regular dryer..the process is explained in many other solutions at fixya and around the net, so I wouldn't repeat it here...but it takes time and patience.
4) The most likely place to start with is the T-Con / LCD controller
I'd first replace that and see if the problem goes away.
5) There's a very minor chance that the LVDS cable that connects the main board with the T-Con does not make good contact initially and changes that as a result of getting hot. It's easy to just touch and move it lightly when the TV is still cold to see if it has an effect on the picture.
Sorry I couldn't just nail it for you, but that's the nature of the repair businss :-)
Posted on Mar 15, 2010
SOURCE: Sony Bravia KDL series 52"
Check the fuses on the power board. there is one fuse on primary side and one on secondary side.
Take of back panel and follow plug into the tv.where it ends is the power board.always use caution.the capacitors in there hold high voltage even after unplugged for a couple of days.Discharge capacitors before servicing the board.
Posted on Jun 28, 2011
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