I have a vizio e550i b2 that had sound but no picture and the problem was the power supply board but i didnt have to buy the part the problem was the connection of the power supply board to the led driver board the connecter on the power supply board had become unsoldered i simply resoldered the connection and the screen works perfect. Vizio tv has sound but no picture ask your own tv question saw answer to problem where vizio va320m has no picture or saw answer to problem where vizio va320m has no picture or sound but botxxxxx xxxxxght goes white and you recommend power supply board be replaced. In most cases a lack of picture and sound on your vizio tv is the result of a wrong input channel setting or an incorrect cable setup when this isnt the case your tv may have experienced a glitch and frozen requiring a power cycle to return to normal operation. Television has no sound answer 6 if you have a receiver or surround sound connected to your tv turn it on and see if you get sound coming from the external speakers television has no sound answer 7 turn off the tv cable box and anything else connected to the tv sometimes turning everything off and then back on can fix the problem
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