Re: Vizio m550nv

i have the same model of vizio tv 55inc i test the secondary voltage and it came out good 5v, 12v, and 18v. but the problem is theres no pic and sound on the tv. and and theres no response coming from main board when i try to pull out the menu and everythin, u can see only the blue screen display, hope someb
ody can help me. thank u so much!