TV SYMBOL COMES ON TV GOES BLACK NO SOUND OR ANYTHING HOW TO REPAIR THIS

PERHAPS A TRIP TO A LOCAL REPAIR SHOP ,SELF FIXING USUALLY IS MORE COSTLY .

check out inverter board that powers backlights.

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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Looks like you might have issues with your screen it self the lights and all internal issues. You might have to take into a repair shop to get it done, a fuse might have been blown up. If you have warranty try to take it in and get it fixed.

The television is shutting itself off to protect itself. The blinking light is a code pattern. The specific code determines whether or not you need an LCD Controller Unit, Main Board, power supply or something else. You would need the service manual. There are parts distributors you can get it from and the parts as well. If soldering and tv repair is not something you are entirely familiar you may want to seek a tv repair person. The manufacturer's support may walk you through the service menus to complete a factory reset depending upon the symptoms.

TV comes on stays on for a short time than goes black with loss of sound green flashing light untill TV comes back on. takes maybe 2 min.

Checked all connection given properly checked your cable connection some time cable connection not proper than also its display no signal

power supply or main board ( possibly missing clock signal)