This is a repair service, you must send us your Main board for repair! Symptoms of a bad Main board we can fix. HDMI don’t work but TV turns on fine. No signal appears regardless of what is plugged in. No sound out of the HDMI ports TV does not turn on Vizio Logo keeps blinking but never turns on On screen Vizio Logo freezes and does not allow the TV to fully turn on. More on the repair. We do not work with tampered boards. 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 extremely rare that we are unable to fix a board, however sometimes there are instances where unusual failures can occur. Your board arrives working. The item “Vizio main board Repair service for 3642-0962-0150 (0171-2272-3237) XVT423SV” is in sale since Wednesday, May 10, 2017. This item is in the category “Specialty Services\Restoration & Repair\Electronics”. The seller is “nickstvs” and is located in Tucson, Arizona. This item can be shipped worldwide.