Vizio V555-G1 stuck on wallpaper; now stuck on V logo

[x_orange90_x]

Heating up the power supply definitely gets rid of the issue. So does this mean there's something wrong on the power supply, or bad caps on the TCON?

[x_orange90_x]

can you tell the 12V T-CION VCC coming from Power boards or Main boards? need photo of the t-con and the source of the 12V T-CON

It's about 40F today and I plugged it in to what it would look like. It only had about a 1 inch bar across the bottom this time, and like before it slowing moved down and off the screen. I put a heater on the power supply and unplugged the tv to see if it would come back. It did not come back. I'm thinking of taking it inside my house and letting it sit at room temperature. I have a feeling it would work fine in normal temperatures, although that still wouldn't be a "fix".

Attached are photos of the boards. I did clean the ribbons and well.

[Diah]

can you tell the 12V T-CION VCC coming from Power boards or Main boards? need photo of the t-con and the source of the 12V T-CON

[x_orange90_x]

noise which i mean... we have 12V to T-con... but the currents not enough to handle whole screen... so in this case the 12V T-CON 12VCC CAPS are fault need to change.

I haven't had a chance to look into this yet, but the other night I turned it on and the bottom half was black with white horizontal lines, and last night the entire screen was black with white horizontal lines going straight down the center spanning about 2/3 of the screen. I'm thinking it's gone into full tcon failure at this point. I'm guessing the caps on it would be surface mount? I do have the means to replace them now, but if it's too many a new tcon would probably be worth it.

[Diah]

The tv is currently in my garage which has been about 32F the last few days. I work in there and it's not heated when I'm not in there. Would that have anything to do with it?

noise which i mean... we have 12V to T-con... but the currents not enough to handle whole screen... so in this case the 12V T-CON 12VCC CAPS are fault need to change.

[x_orange90_x]

its look for me noise caused by Power supply.... use hairdryer to heat the cold area

The tv is currently in my garage which has been about 32F the last few days. I work in there and it's not heated when I'm not in there. Would that have anything to do with it?

[Diah]

its look for me noise caused by Power supply.... use hairdryer to heat the cold area

[x_orange90_x]

Odd fault i would remove and inspect/clean all ribbon cables as one could of got damaged during your fault finding

Odd indeed. Perhaps it's the ribbon from the main to the tcon as I did obviously mess with that one. The connectors on these main boards are finicky I've noticed. There's little cut outs in the sides of each end where they sit in the connectors and you close the clip, rather than sliding it in and the clip putting pressure on it. I had to open it last night because the IR sensor wasn't working. Turned out it's ribbon came undone at the sensor side. I don't know why I didn't think to check the others while it was open.

[vinceroger69]

Odd fault i would remove and inspect/clean all ribbon cables as one could of got damaged during your fault finding

[x_orange90_x]

Here's some more pics of it. The whole bar ticks downward until it's gone completely and then the picture is perfect afterwards. I noticed that it happens now whenever it's been unplugged. I used it for about a week without ever seeing this and I didn't unplug it during that time.

Edit: I'm kind of wondering if it could be a tcon issue

[x_orange90_x]

I think something is wrong with the file, didn't see anything.

It works when I open it 🤔

Here's a picture of it... But do note, the whole bar DOES move downward in slight increments like a screensaver.

[nomoresonys]

I think something is wrong with the file, didn't see anything.

[x_orange90_x]

So I turned it on tonight and it was doing something strange. See the attached video. The bar was moving down just like a no signal box would. I did a factory reset and it didn't do it again. What could this be?

[x_orange90_x]

Thanks for all of the help guys! I appreciate it!

[nomoresonys]

[vinceroger69]

I put in the new board last night and it's working. I had it on for about an hour and a half with no issues.

Good to hear the replacement board fixed the issue and another tv saved

[x_orange90_x]

I put in the new board last night and it's working. I had it on for about an hour and a half with no issues.

[EazyBone]

It'd probably be updated anyway. Vizio is bad at keeping their tvs updated so the last update was probably years ago.

[nomoresonys]

If it works fine without an update, there's probably no great need to update.

[x_orange90_x]

I ordered a board. Should be here sometime next week. When it comes, considering the tv is fixed, should I update it if it's outdated? Or should I not take that gamble?