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You have 3 things that could be cause of no audio
poor solder connections ,Bad capacitors or you need to replace Main Board the one that has cable hookup on it .Encompass Parts 1-800-638-3328
The fans are all monitored by the Micro. When one goes down, especially the lamp fan, they will not fire. If the fan is bad, replace it. If it's not I would call a service company.
99 percent of the time the humming can only come from a defective powerboard, before it dies, you should consult your warranty. Otherwise you can order the parts and replace yourself.
I heard a pop sound, and now there is no power to the VIZIO RP56... found the lamp to be out.
I replaced the lamp, and now I still don't have power to the TV
confirming the outlit is working and it's hot, I unpluged, and repluged the power cord, still not power to the TV?
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