Re: Vizio M43-C1 - How closely do I need to match the mainboard number?

Option 2: If buying a mis-matched mainboard is a bad idea, I've found an eBay vendor that repairs this model of mainboard. [url]https://www.ebay.com/itm/114836536025?hash=item1abcca7ad9:g:lecAAOSwOJ1gneEy[/url] It's a bit more expensive than option 1, but it comes recommended by someone else on this forum (shout out to @Neilc6!)

I guess what I'm wondering is whether I can trust a random eBay vendor to do a real repair (presumably, a reflow / re-solder of the BGA that is beyond my amateur abilities)...

I have a Vizio M43-C1 stuck in a reboot loop with no backlight.

I've tested all the voltage rails coming out of the power supply and they are "normal" for this model (PS_ON & DIM go high when turned on, BL_ON & 3D_ON are close to zero due to backlight power flowing through the mainboard, 5VSB is 5V, and 12V is 19V, which is apparently normal for this board).

Basically, I get similar results to Garry in this post: [url]https://www.badcaps.net/forum/showthread.php?t=80346[/url]

So, I've ruled out the PSU for now.

The reboot...

Re: Vizio M43-C1 No Backlights



@Neilc6: I'm considering sending him mine. Do you know if he's doing anything fancier than the amateur fixes referenced here? I.e. can I expect his repairs to last longer than the weeks or months that the "toaster over" approach seems to yield? It doesn't seem like this board is readily available any more, so it's either that or rolling the dice on a slightly different board....

Re: Vizio M43-C1 No Backlights

@gte577j: What's the full model number on your original board?

Re: New Members - please post your introductions here

Hello!

I'm just a guy who doesn't like throwing things out. In my professional life, I'm a sound guy, so I'm used to soldering cables and doing simple repairs on audio equipment, but nothing too fancy.

Fun fact: I cut my teeth reviewing computer parts (mainly fans, cases and power supplies) for a site called Silent PC Review, which is where I got most of my working knowledge of electronics.

Yesterday, My Vizio M43-C1 TV dropped into a restart loop with no backlight, so I started poking...