Question about Samsung Televison & Video
Sounds like the backlight led inverter board is bad. Easy to replace. Google for replacement board.
Posted on Sep 02, 2019
SOURCE: Same old red convergence issue
they wont show any signs of being bad if you cant adjust the convergence the ICs and possibly a few of the convergence resistors will need replacement. You can get new ICs and resistors at the following link and they come with free instaltion instructions.
Posted on Jun 21, 2008
Please read my giude then you may understand more as to what it takes to make the TV functions.
Basic LCD monitor and TV troubleshooting guide:
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find.
Please leave rating if it helps.
Posted on Mar 06, 2011
You can't see if a cap is good or bad jus looking at them they have to be measured>They loose their capacitance because they dry overtime.
I do sugest that you replace you power supply module or replace all caps.Possibily you may have a broken line in the PCB
Posted on Nov 01, 2012
SOURCE: I have a PUREVIEW 40" LCD TV Model# PV40LD400. I have Power but no picture or sound. I replaced the Backlight Inverter and the power board but the TV is doing the same thing. It will power on and the
T'Con board fault. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Posted on Nov 22, 2014
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