Tv's with sound but no picture is usually led backlight issue
A quick way to know if your main board is at fault: disconnect the black cable that goes from power supply to main board, and plug power cord in, if backlght comes on main board is the problem or (possibly t-con), if backlight doesn't come on then the problem is backlight issue, or power supply
For boards with no issue we will subtract diagnostic and return shipping fee in the total $20.00 and refund the Balance
This is a repair service to fix samsung boards with the following symtoms
Please ignore is estimated shipping time, the faster you ship it to us the sooner you get it back
Turn around time is usually 2-3 days from the time we receive your board
6 months warranty for the same issue included in this repair
Pease message us if you have any questons