Question about Sony BRAVIA Televison & Video
Sony bravia ex42 when plug in and swicth on then there is no response . like tv is dead .
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Posted on Jan 02, 2017
You know how to reset the tv to its factory setting, I think you are a technician. Second thing you can do is software update. Go to http://esupport.sony.com/US/perl/swu-list.pl?mdl=KDL42V4100&LOC=3#div_pos_30 . If it doesn’t work. Replace the Main board (UB board). Part # A-1547-086-A Cost approx $320.
Knowledge obtain from: Repair experience on same symptom.
Parts reference: Andrews electronics, 800 289 0300.
Posted on May 02, 2010
try cycling the power (unplug 2 minutes) and plug in and wait 30 seconds and turn back on. if this doesn't work, could have been a surge, your protector should have saved it, but could have been through cable or something. surge protectors will guarantee no damage for several years, check with the manufacturer maybe they'll cover the repair.
Posted on Jun 01, 2010
Hi,the problem is from the fuse in the tv,it's blown and it's a means of in-built security against power fluctuations from damaging the unit,so the solution is to replace the fuse of the TV to restore your unit back to a normal working condition.
Posted on Jun 13, 2010
You either have failed 24vdc power supply section or failed backlight inverter board, check for 24vdc first, look for caps with leaking/bulging top.
Posted on Jun 13, 2010
7 blinks in the this series(KLV) means there is a short in the power supply board. The easiest way to fix this would be to swap out the board. I can find you a replacement if you want to try fixing this yourself.
Posted on Dec 24, 2010
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