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What is the model number off of the back of your Vizio please?
I can help you find the soundcard for this TV, but I simply need to know what model we're dealing with - it's located on a sticker on the back of the set.
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At the end of HDTV should be a 10A, 20A or 30A - what is the complete number?
Okay it's just L37 (2.2 is how many amps it draws from the wall). Looking up this part now.
The audio processing is all contained on the "Mainboard" of the set, which is available for purchase at the link below for $50 for your set:
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Do you need further assistance with this please?