I'm having a issue with a Vizio E550VL. Wondering if I could get some advice? I'm trying to decide what needs to be replaced. I'm thinking the back light inverter or main board. When the TV is on the display is hard to see. It is dark especially towards the center. You can barely see the writing in the center. If I go to the menu and reset the TV to factory settings it displays perfect on the whole screen for a few minutes then, slowly starts to fade and darken. Any advice would be great. I am new to this sight and hope it is ok to to post on this thread. I have an old CRT in my house so, it would be great if I can get this TV working correctly. Thank you for any help. When I can I will open the back and take pictures.
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Re: Vizio E550VL screen fades
This is a TC-P50S1. 7 blinking red lights, if I disconnect the SC board I get 6 blinking lights. If instead I disconnect the board on the opposite side(can't remember what it is called) I still get 7 blinking lights. I also tried disconnecting the upper and lower boards connected to the SC board but, this did not make a difference so, I believe the SC board is my problem. It has the glued on heat sinks so, I can't see if anything is blown. Everything visible looks fine. I can't seem to find a price under $130 for a board. Any suggestions where to get cheap parts? -
Re: Vizio E550VL screen fades
Put them each in their own thread! the Vizio is an LCD, the other is a plasma. they are totally different.Comment
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Re: Vizio E550VL screen fades
Your Vizio sounds like the main board, if it was trouble in the inverters the reset wouldn't do any good. Its too bad you are all the way on the other side of the country Ive been looking for a screen for an E550VL.Liberating magic smoke one part at a timeComment
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Re: Vizio E550VL screen fades
Here are some photos of the boards.Attached FilesLast edited by jhardluck; 09-18-2013, 05:56 PM.Comment
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Re: Vizio E550VL screen fades
Caleb, when you say main board which one are you talking about. I put pictures of the boards in the visio above.Comment
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Re: Vizio E550VL screen fades
The one in the first pictures in post 5, it has the audio/video/tuner functions on it.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Vizio E550VL screen fades
The fact that the menu works fine then fades seems to prove the inverters and back lighting are working. I agree that it is the main board but without the schematic if front of me I am unable to tell you what to test on the main board itself.Comment
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Re: Vizio E550VL screen fades
You could try freeze spray on different portions of the main board to see if you could get it to come back from the fade. It sounds as if it might be heat related as it gradually fades away. You can use canned air held upside down for freeze spray. Also have you tried all the inputs? and are they all the same?Last edited by Caleb; 09-25-2013, 09:20 AM.Liberating magic smoke one part at a timeComment
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Re: Vizio E550VL screen fades
Tried multiple inputs with the same results. I will try some canned air and let you know.Comment
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Re: Vizio E550VL screen fades
I repaired one of these it was the main board, I started with reflow of the two ic under the large heat sinks. the tv was fine for 3-4 hrs then messed up again , turned it off then it would repeat, replaced it & it was good to go.Comment
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I'm currently trying to diagnose and fix my Vizio TV (Model M50-C1). I've tried a number of different basic solutions, but I'm trying to determine if my issue is currently a failing panel, T-Con board, or main board (or something else entirely) and whether or not it is worth my time to fix it. Details of the issue and what I've tried are below as well as why I think it is either a bad panel, T-Con board, or main board.
The Issue: The TV will be on and working fine but after the TV is on for ~5-10 minutes the screen will freeze (with sound continuing) until the TV reboots itself. While... -
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