TV turns on and works correctly but will shut off after 5 minutes - 2 hours. No signs of life or power. Once your board has been fixed, we will test it in a live TV set to ensure quality. What if we can't fix your board?It is rare that we are unable to fix a board, however sometimes there are instances where unusual failures can occur. You sent a good working board. The item "Repair Service Samsung Power Supply BN44-00618A for PN64F5300A 1 Year Warranty" is in sale since Friday, June 30, 2017. This item is in the category "Consumer Electronics\TV, Video & Home Audio\TV, Video & Audio Parts\TV Boards, Parts & Components". The seller is "nickstvs" and is located in Tucson, Arizona. This item can be shipped worldwide.