My tv is on but has a black screen - Sanyo DP46848 LCD TV

Samsung HL-R5087W TV screen goes blank -tv/sound on - Forums ...

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CNETJun 11, 2015 - About a month ago, the at various times the tv screen would go blankeven though the tv ... Try turning off the cable/sat box when the happens. ... In reply to: Samsung SP50L7HX DLP TV linked to Sky HD box - same problem .... on it comesback to normal. however, once it went off again (Black Screen) after only 2-3 minutes. ln-t4069f picture problem lcd warmup - Forums - CNET
Jun 11, 2015
Samsung LCD TV LN-T5265F Black Screen Diagnosis Help ...
Jun 11, 2015
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Check out the inverter board for a blacked out screen.

Hi Lisa,
It appears to be back light failure. Please consult a local TV Tech to fix it.

Your Tv has got lose solidation take to repaire shop it needs to be resolidated!

you need to replace y-sustain board.

check cold solder vertical circuit