Question about Samsung Televison & Video
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Posted on Jan 02, 2017
The Y buffers were going bad, sounds like they went , you should get the Y upper and Y lower also the Y main. be aware the screen may be bad but tou won't know till you try the Y boards,
Posted on Aug 01, 2009
You might want to try reseating all of the ribbon connectors that connect to the tcon first, but it sounds like you may have a bad panel(screen) which is probably what made the original tcon die. The only other possibilty would be the backlight inverter board(either the master or slave depending on which side the dark area is on).
Posted on Aug 29, 2010
SOURCE: My Samsung TV 46" LNT4671F
This is due to low voltage getting to the Inverter board or the Inverter board on the bad side is not lighting the lamps. Usually bad capacitors or the power supply and the inverter will cause this symptom. You may want to replace both inverters boards on this model, new models have one inverter board for both sides of the backlight.
Posted on Nov 10, 2010
SOURCE: I have a samsung ln40a550
I would think if SAMSUNG came out to replace the bad caps and the TV is still not working right, I would think they should fix it correctly, may be the person did not do the good quality jobs and left. What does SAMSUNG say about this? The bad power supply could have unstable DC and could have damaged the other boards inside the set. You will need to inspect the power supply yourself, look to see the soldering works are good and everythings are put back together correctly with correct polarity. Basic LCD monitor and TV troubleshooting guide: Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Then you need to verify all the DC output voltages before going any further, it will not be an easy job.
Learn more here;
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
Basic LCD monitor and TV troubleshooting guide:
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Posted on Dec 11, 2010
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