I have sony kv 14 gmr1mk r2ks always shorted and the other 1 appear like a lightning in midle of screen.. kv 21gmr1mk when adjust the brigth and contras it shut down the picture and blinking..can u help me how to troubleshoot this problem? what remedy you sudgest..thank you...
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circuit (automatic kine bias), the timer/standby indicator blinks for
about 30 seconds then goes to the self-diagnosis function. Something is
wrong with the video. Check video out, Q705, 732, 761 and other components
on the C board, also check Q218, 219, 220 on the A board. In addition,
unit could be in IK blanking, try turning up screen slightly.
Visit the site named 'Electro-help' for
more details. Click this link. View it in
'Flip card' option, which can be selected from the drop down box
menu by the [Sidebar] tag, at the top left corner of the display
window. It will make search easy. There
are more than 975 posts to different brand TVs now.
the blinking is actually an error code. watch the blinking closely and you will see it blink a number of times pause briefly then blink the same number of blinks over and over. If you let me know the number of blinks I can tell you why the set isnt powering up.
First, unplug the tv set for 30 seconds, plug back in and try ti turn on..
Second, If you're NOT still under warranty you should at least open the TV and look for a blown fuse near where the power cable enters the set. A lot of times you can buy replacement fuses at a local electronic or hardware store and they're easy to replace.
Check the fuse. If it is blown, it will be obvious and make sure that the set is unplugged before replacing it. If it blows again, or if it is not blown, your problem is probably in the 'X' volt regulator and you will need professional help with the repairs.
You can also check the board where the components are mounted and resoled any that look bad. Brief power outages may cause the TV not to turn on. If you are using a surge protector, try connecting the set directly to the wall outlet.
In your case it could caused by a blown fuse, a leaky diodes or a bad solder joint at the horizontal drive transformer.
All can be replaced at a local electronic or hardware store and they're easy to replace
If this does not correct the problem, you may need to have your TV serviced.