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Is my Tv finished?

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Old 07-03-2017, 10:03 PM   #1
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Default Is my Tv finished?

So I have a few years old Vizio Vf551. Is a great Tv even today, until all of the HDMI ports went out. Just said "No Signal". Have been told it was the Main Board and to try and find another one online. I cannot find one except from ebay which is really a gamble if a replacement will even work, and being $100+, it really isnt worth the cost.

I saw somewhere online that putting the mainboard in the oven for a few minutes at 375 degrees can remelt the solder and create a good connection again. So I took the mainboard completely off, and tried it in the oven. I was worried about it catching on fire, or just melting altogether so I do not think I did for long enough, but when I got it back on the tv I would just get a black screen...So is that progress?

I really do not think I tried it for long enough, and will try it longer tomorrow. I know the mainboard still worked after the oven trick, because the composite video works, but obviously that isnt what I want to have to use at all.

Unforutunatly I really love the picture that this television has. Blacks are Black, and the color is great. But i am not in the position to et another tv of this size right now. Everything uses HDMI right now, but I have seen HDMI to component video adapters, and also at Walmart HDMI to VGA. Really this sucks and I dont want to resort to this but it may be all I have, so would one of these choices be better than the other? Do I have any other options or is this just trash now?

Could really use some insight. Thanks
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Old 07-04-2017, 07:50 PM   #2
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Well at 375 degrees you may have cooked the components on that board beyond repair, most of the electrolytic caps are only rated out to 105 degree C, you used 190 degrees C, (375 degrees F) this may have damaged them to a point where it's not worth the trouble to fix that board.

Look for a part number on that board and try find one on Ebay.
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Old 09-19-2017, 07:41 PM   #3
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Quote:
Originally Posted by easytruck14 View Post
So I have a few years old Vizio Vf551. Is a great Tv even today, until all of the HDMI ports went out. Just said "No Signal". Have been told it was the Main Board and to try and find another one online. I cannot find one except from ebay which is really a gamble if a replacement will even work, and being $100+, it really isnt worth the cost.

I saw somewhere online that putting the mainboard in the oven for a few minutes at 375 degrees can remelt the solder and create a good connection again. So I took the mainboard completely off, and tried it in the oven. I was worried about it catching on fire, or just melting altogether so I do not think I did for long enough, but when I got it back on the tv I would just get a black screen...So is that progress?
I really do not think I tried it for long enough, and will try it longer tomorrow. I know the mainboard still worked after the oven trick, because the composite video works, but obviously that isnt what I want to have to use at all.

Unforutunatly I really love the picture that this television has. Blacks are Black, and the color is great. But i am not in the position to et another tv of this size right now. Everything uses HDMI right now, but I have seen HDMI to component video adapters, and also at Walmart HDMI to VGA. Really this sucks and I dont want to resort to this but it may be all I have, so would one of these choices be better than the other? Do I have any other options or is this just trash now?

Could really use some insight. Thanks
HI! This is a very common problem with VIZIO tvs, normally one HDMI input goes off, then another one, then all of them will fail , in this case main board need to be replaced, there is a thing to remember: it got to be right part number, find out the paper sticker on the main board itself and this is the right part number.
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