Samsung UHD TV repair standby light on but no power or backlight series 6

I picked up this TV on craigslist for $25. I thought I would try and fix it. The problem was the controller board. I was getting a standby light and voltage but the TV would not turn on. I tried testing caps and circuits but finally threw in the towel and bought the replacement boards for $37 on shopjimmy.com. I'm into this TV now for about $70. Not bad for a TV that cost $400 new.