I got this tv, vizio m70-c3, and it had no signs of life. I thought it could be the power supply board. There are not many boards in the market, but a ton of repair services at $60 on eBay. So I decided to try to fix them. I saw some caps that were popped out and decided to replace them. Guess what… it worked… I hope it’s the solution that you were looking for too…
At the end I replaced 7 capacitors that were 1000uf 16v with capacitors with more voltage capability. I installed 1000uf 25v. Find the capacitors that I used in the link below.
https://www.amazon.com/PoiLee-1000uf-...