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Re: Vizio XVT3D650SV - Help
OK so no matter which combination (plug in, pushing power button or plug disconnected) it always stays at 0Comment
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Re: Vizio XVT3D650SV - Help
OK, so the main board is not sending the PS_ON signal, so main board is the problem right now.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 XVT3D650SV - Help
Are you saying I should just order a main board from vizio? I would like to try to find the root cause as I can solder. A new main board will cost me around $150 (which may be ok but I need to fully know it is a main board issue cause I'm already -$100 on a new power board that didnt solve it).
I would scrape the tv but I spent a lot on it and barely had the money at the time to buy it and dont have the money now to replace itComment
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Re: Vizio XVT3D650SV - Help
On post 2 with your first set of pictures: Is that the power button shown on the second to last picture ? is it the bottom one in the picture with the 8 pin connector ?
If it is, does it rotate or push to turn on and off and does it normally do any other functions ?Comment
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Re: Vizio XVT3D650SV - Help
The group of picutes "Round 2" IMG_20140703_133842.jpg is the power switch board. The power switch pushing in to turn on/off. If also rotates to interact with the menusComment
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Re: Vizio XVT3D650SV - Help
OK
I figure it might be multifunction
check for voltage at the 8 pin plug at the main board side (I think it is a J7 plug)
Then recheck the voltages at the power button end to make sure they are the same.
If you find voltage on a pin
Hold the tester in place so that you can see if the voltage drops when you push the power button. If you have several pins with voltage, keep check them to see if one dropsComment
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Re: Vizio XVT3D650SV - Help
I have 1 pin that has power 3.3v on both sides of ribbon. When power button is pushed it drops off to 0 on both sidesComment
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Re: Vizio XVT3D650SV - Help
well. I was hoping for an easy fix like a bad button, BUT, NOT !
do both power supplies give the same results voltage wise?
Did you recheck pin 13 and pin 14 & 16 to see if they show any signs of a voltage rise wile you push the power button (I think you checked 13 but not sure if you check 14 or 16)Comment
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Re: Vizio XVT3D650SV - Help
Hah figures!
Both are the same. I just just tested pins 1-16 on main board and power board. Pushing the button doesnt change anythingComment
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Re: Vizio XVT3D650SV - Help
well, the controller chip (whichever one it might be) is getting 5 volts and turning it to 3.3 and trying to turn on, but isn't
It may be the chip under the one heatsink ? or could be somewhere else and trring to figure it out could be rough.
you would first have to try to figure out where the power button 3.3 volts is coming from to have any clue where to start. even if you find that chip, it could be something else stopping it !Comment
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Re: Vizio XVT3D650SV - Help
I will order a main board then! Thanks for all the help guys!Comment
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
Hi There,
This TV was auto switching off after few seconds with some vertical lines on the screen, so got a new TCON board and replaced it.
After replacing the TCON board it was working fine and i set it up with everything, used for few hours, then had the bright idea to update the software on it. During the update process, TV switched off and now no audio or video. No relay switch sound.
More Details
TV Model - LG OLED77G1PUA
Got the same exact TCON board from TVPartsToday and replaced it. But didnt transfer the EPPROM data (didnt... -
Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic... -
Hey guys great forum glad to have found it. I bought a Sony XBR 65X900C cheaply because it didn't work. No signs of life at all not even a light/led. All I hear is a brief high voltage sound when I throw the power to it.
Didn't see any obvious signs of damage so right away started checking voltages. This is what I see:
Power Board Connector that goes to Main board
CN6401
Pin 01 NC
Pin 02 NC
Pin 03 "BL_ON": 0V
Pin 04 "N/C"
Pin 05 "STBY 3.3V": 3.5V
Pin 06 "GND": N/C
Pin 07 "AC_OFF"... -
I have a Panasonic TC-P54VT25 that will power on and prime the display but there is no image at all.
The panel is primed as there is a slight glow from the entire panel. This means the problem should be logic related. The service manual also confirms this and recommends replacing the A or the D board.
I have tried to get the TV to display the test sequence but I have been unable to and I don't even know if this TV has a test sequence or not. I tried following tom66's instructions in post #3 on this thread https://www.badcaps.net/forum/showthread.php?t=26790. There was...
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