Re: Vizio VX552XVT Screen Flashing on and off
What does this mean in layman's terms?...
agent11927
Member
Last Activity: 06-24-2014, 08:01 PM
Joined: 09-26-2013
Location: jacksonville. fl
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Re: Vizio VX552XVT Screen Flashing on and off
I believe it is local dimming because it does have adaptive lumina. Are the LEDs difficult to replace myself?...Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
So I replaced the power module and the TV is back up and running! The backlight is still dark in some areas of the screen still. I dont think its a screen issue because some parts that were dark before are lit up. There is a red light still flashing on and off on the inverter board. Could the inverter board be at fault or could there be shorts on the main board? Thanks again to Tom66 for all the help!Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
Thanks so much! Ill replace it and let you know how it goes....Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
Those voltages don't read when the screen goes black, though they do fluctuate by as much as 10 volts when it flickers. So you are saying my power supply may be bad? I also noticed when the screen flickers on and off the dark areas sometimes light up briefly. Would this be because of the power supply too? It starting to shut off now after it flickers too much. I also notice if I turn the backlight up it is more likely to flicker on and off and if i turn it down it will slow down or stop....Last edited by agent11927; 10-05-2013, 11:09 AM.Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
Ok i have a new problem now. The TV will be powered on with the vizio logo glowing white, but there will be no sound and no picture and no backlight on. This usually happens after it flashes on and off. I am to the point now where i want to replace the main board, and power supply. But i don't want to waste money if i can isolate what board is going bad. Please Help ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
You replaced the backlight inverter board?...Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
Same TV....Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
Ok I will try that. I thought the TV was supposed to update the firmware automatically. I also noticed it gets worse the more the backlight is turned up. Also could you tell me why the picture looks like it does in this picture? I got the TV for cheap off of craigslist hoping to be able to fix in myself. The Backlight in the back panel of the TV seems to be shining through all the holes so i dont think it is a backlight issue....Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
I believed I have them all disabled already....Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
I believe I just got a reading of B= 2.81 when it was flashing but it was real quick and not steady flashing.Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
Thanks Tom66 you are the man! While the screen is on and not flickering the voltage is at A= 1.735v and B= 3.26v. When it is flashing A= 3.34v and I haven't been able to get a reading for flashing B yet because it stopped flashing before i could get a reading. It has not failed on me yet tonight either so I cant get those readings yet. As soon as it does i will get the rest of the readings. Is this helpful at all yet?...Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
Does anyone know what pins i should test?Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
Ok Im home from work and ready to check some voltages if someone is available to help! Which pins need to be tested?Last edited by agent11927; 10-01-2013, 03:30 PM.Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
Here you are. Can you read them ok?...Leave a comment:
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Re: Vizio VF552XVT Screen Flashing on and off
Sorry i took so long but here we go. Here are some pics if you can direct me as what to test. When it is flashing the power board voltages vary going out but seem to be steady on the main board. What part exactly needs to be tested as i dont know where the BL on/off circuit is. Thanks again. And the power boerd in the link posted earlier is the same as mine....Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
I was wrong it is vf. That is the power supply that matches my TV....Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
Is is the vx552xvt...Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
OK I am going out to get the digital multi meter now. I will have to disassemble the TV again to test the voltages and will post back with my results. Thank you so much for the help and quick responses!...Leave a comment:
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Re: Vizio VX552XVT Screen Flashing on and off
OK. Is it labeled on the main board or do you have a schematic. If not I will send you a picture.Leave a comment:
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