Re: Vizio XVT3D554SV Flashing logo, intermittent backlight, no sound or image

No, though I had already done that during all the diagnostic tests I performed trying to figure this out. Fuses are good on the tcomm board, voltages were clean, etc.

I'll pop the covers off that board and see if there is any obvious damage. Have you had any luck finding test points or any other diagnostic documentation for these boards? I would love to be able to repair this board so I have a spare in the future.

Re: Vizio XVT3D554SV Flashing logo, intermittent backlight, no sound or image

Well, turns out it was the t-comm board! Swapped it in and it fired right up, no problems. Figured anyone else who has a similar issue to mine might find the solution helpful.

Re: Vizio XVT3D554SV Flashing logo, intermittent backlight, no sound or image

Tcomm board will be delivered today, but I suspect it won't solve the issue. Is there any way to re-flash the eeprom or acquire and solder one in myself? I've been doing quite a bit of searching and there doesn't seem to be much repair info on this tv.

Re: Vizio XVT3D554SV Flashing logo, intermittent backlight, no sound or image

damn.. I already bought a t-comm board on ebay. saw a few cases similar to mine and they solved it with t-comm boards. well, guess I can just resell it myself.

long time lurker, first time posting a thread.

I picked up a dead Vizio XVT3D554SV 55" 3d tv last night for about $100. The man I purchased it from said it just off one day and he got frustrated and just bought another one without bothering to have this one looked at. The TV itself looks beautiful, not a scratch, ding, mark or anything.. looks like it just came out of the box.

Here are the symptoms:

When first plugging in, system does the normal orange/white flashing logo for about a minute, then it goes solid orange. Pushing power button on...

Re: Vizio 42" XVT3D424SV No Pic. Vizio Standby flashes 31 to 63 times after unplugged

I know this is an old thread, but did you ever resolve the issue? I have the 55" model (xvt3d554sv) and am experiencing a similar issue. I have no sound or image, though yesterday after doing the 30 second reset I got the logo on screen for a couple seconds before the set locked up, flickered the backlight and shut down.

My voltages are the same as yours on the main and t-con boards, though my backlight will sometimes flicker before the set kicks off. My inverter board...