Vizio VX32LHDTV10A Intermittent scramble of picture

[donw]

The picture on my Vizio VX32LHDTV10A intermittently scrambles and then comes back after awhile. But then would scramble again eventually. I was going to order a new main board or T-Con board but the part number shows a (4C) at the end. I have not been able to locate the part with the (4C). The number is 3632-0162-0150 (4C). I am wondering if a part number with a different number in parenthesis at the end will work? Also, is it possible there is some other issue causing this problem? How do you recommend I troubleshoot this problem?

[CapLeaker]

Re: Vizio VX32LHDTV10A Intermittent scramble of picture

You need to give more detailed information and maybe a picture. Is that happening on the tuner or on the HDMI channels etc.

[ivtec]

Re: Vizio VX32LHDTV10A Intermittent scramble of picture

The picture on my Vizio VX32LHDTV10A intermittently scrambles and then comes back after awhile. But then would scramble again eventually. I was going to order a new main board or T-Con board but the part number shows a (4C) at the end. I have not been able to locate the part with the (4C). The number is 3632-0162-0150 (4C). I am wondering if a part number with a different number in parenthesis at the end will work? Also, is it possible there is some other issue causing this problem? How do you recommend I troubleshoot this problem?

I have a Vizio M421VT that had a scramble pic but all the time not intermittent and i've got this Vizio Running, i did the BGA chip heating,
i applied heat with a heat blower, the same method as the Ps3 YLOD fix tutorial, just by heating first bottom side with low heat then with high heat the heat sink on the main board BGA heat sink , let it cool for an hour then put it together and voila it was running,then for feature caution i opened a big hole behind the Main board Heat sink, and added 2 small 5 v fans connected to USB. It's been working good for about a year now,don't know if this is the same issue of yours but it's worth a try, if need more info just ask or pm me.

This is your main board BGA MT5372AJ M ARM you don't have heat sink like mine so use heat on medium for less time


http://assets.shopjimmy.com/media/ca...0150-top_1.jpg


https://www.youtube.com/watch?v=J5fzUrP0pxs

https://www.youtube.com/watch?v=YiSs0lPw6RY

[donw]

Re: Vizio VX32LHDTV10A Intermittent scramble of picture

I have a Vizio M421VT that had a scramble pic but all the time not intermittent and i've got this Vizio Running, i did the BGA chip heating,
i applied heat with a heat blower, the same method as the Ps3 YLOD fix tutorial, just by heating first bottom side with low heat then with high heat the heat sink on the main board BGA heat sink , let it cool for an hour then put it together and voila it was running,then for feature caution i opened a big hole behind the Main board Heat sink, and added 2 small 5 v fans connected to USB. It's been working good for about a year now,don't know if this is the same issue of yours but it's worth a try, if need more info just ask or pm me.

This is your main board BGA MT5372AJ M ARM you don't have heat sink like mine so use heat on medium for less time


http://assets.shopjimmy.com/media/ca...0150-top_1.jpg


https://www.youtube.com/watch?v=J5fzUrP0pxs

https://www.youtube.com/watch?v=YiSs0lPw6RY

Overheating is something that occurred to me. I watched your Youtube video for fixing Playstaion units. Thanks for the tip. Never considered heat flowing. On a TV board though I am not sure they even put something like Arctic Silver on the GPU. There is a metal plate mounted on top of the main board so I am wonderring if that is causing overheating. The link of the part is exactly like the board I pulled. Except it has (4B) instead of (4C). Do you think the (4B) will work?

[ivtec]

Re: Vizio VX32LHDTV10A Intermittent scramble of picture

Overheating is something that occurred to me. I watched your Youtube video for fixing Playstaion units. Thanks for the tip. Never considered heat flowing. On a TV board though I am not sure they even put something like Arctic Silver on the GPU. There is a metal plate mounted on top of the main board so I am wonderring if that is causing overheating. The link of the part is exactly like the board I pulled. Except it has (4B) instead of (4C). Do you think the (4B) will work?

The Video i posted was not made by me about PS3, but rather to let you know the proper way to use the Heat blower on the BGA on the main board of the TV,although the issue of either the BGA on the tv main board or the CPU of the P3 is that the over heat of BGA or CPU causes the solder joints to become cold solders then turning in bad connections inside the BGA or CPU.

[donw]

Re: Vizio VX32LHDTV10A Intermittent scramble of picture

Are you suggesting the method shown well fix the cold solders or should I replace the board? Maybe the method shown with a blow heater would be worth a try? But on a TV board BGA chip there is no heatsink and as far as I can tell no paste has ever been applied to what looks like the chip. Maybe even applying some Arctic Silver to the chip anyway would keep it from overheating.

[ivtec]

Re: Vizio VX32LHDTV10A Intermittent scramble of picture

Are you suggesting the method shown well fix the cold solders or should I replace the board? Maybe the method shown with a blow heater would be worth a try? But on a TV board BGA chip there is no heatsink and as far as I can tell no paste has ever been applied to what looks like the chip. Maybe even applying some Arctic Silver to the chip anyway would keep it from overheating.

Well you could try to put a piece of aluminium on top of the BGA so when you use the heat blower it will not heat direct on the chip,since it has not Heat sink,
try to use medium heat setting on the heat blower.
you have nothing to loose,


or you could buy it from ebay;

http://www.ebay.com/bhp/vizio-vx32lhdtv10a


Note; i said CPU on the Playstation 3,but in fact it's not a CPU chip like on most modern computers but A BGA like the one on my Vizio and on yours,

https://en.wikipedia.org/wiki/Ball_grid_array

[donw]

Re: Vizio VX32LHDTV10A Intermittent scramble of picture

Good idea about the aluminum foil. I mostly have worked on PC's since the 90's so TV repair is pretty new to me. Was wondering what BGA actually means. With CPU's you actually use the cooling agent on the chip and then attach the heatsink with fan. Some have suggested using a hair dryer but I would think actually using a heat blower would be better as you can adjust the level of heat. One would sure not want to overheat the chip which I have done by simply not connecting the heatsink fan properly. Live and learn. I will give this a try and see what happens. It was very tricky though getting the board ribbon cables disconnected. Thanks again.

[ivtec]

Re: Vizio VX32LHDTV10A Intermittent scramble of picture

Good idea about the aluminum foil. I mostly have worked on PC's since the 90's so TV repair is pretty new to me. Was wondering what BGA actually means. With CPU's you actually use the cooling agent on the chip and then attach the heatsink with fan. Some have suggested using a hair dryer but I would think actually using a heat blower would be better as you can adjust the level of heat. One would sure not want to overheat the chip which I have done by simply not connecting the heatsink fan properly. Live and learn. I will give this a try and see what happens. It was very tricky though getting the board ribbon cables disconnected. Thanks again.

https://en.wikipedia.org/wiki/Ball_grid_array