Total noob here...Have a vizio E321VL thats has just the amber light on. The power button does nothing .....have 5 volts stand by only and no 12 volts going to the power supply.The power supply works...where to start need help? Here are some pics of the main board.
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vizio amber light E321VL
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Re: vizio amber light E321VL
Please post the good clear pictures of the power supply board, especially where the connectors are, both top and bottom sides of the board.
The power supplies for 12vdc and 24 vdc are switched on the the PS_ON command from the Main board, no PS_ON then there will not be any 12 or 24vdc.
We need to find out if you do have the PS_ON at one of the pin on the power supply connector first.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=24809
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Re: vizio amber light E321VL
OK, per your picture, pin 4 of CN101 is the PS_ON receving pin from the main board, Check the DC voltage of that pin when the TV is OFF, and when the TV is ON. Black probe of the meter can be on the chassis. We need tof ind out if the main baord is sending out 3.3~5vdc to this PS_ON pin first.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=24809
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Re: vizio amber light E321VL
OK, I look at the label again , pin 11 is the PS_ON. So it is nothing there when you hit the power switch.
Can I see more pictures on how the main board is connected to the power supply board since the main board looks so small and I cannot see which connectors are connected to the power supply board. I can see some voltage regulator IC's on the main board.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=24809
Comment
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Re: vizio amber light E321VL
Please see PDF. Please check the fuses, and voltage on those 3 pins and tell us what you read.Attached FilesLast edited by budm; 03-23-2012, 11:28 AM.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=24809
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Re: vizio amber light E321VL
Please also list the part number of those two regulators that budm circled so we know what the proper output voltage should be.--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
--- end sig file ---
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Re: vizio amber light E321VL
Originally posted by johnz View Post.Now i used the multimeter set at 200 VDC--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
--- end sig file ---
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Re: vizio amber light E321VL
Originally posted by johnz View Postok here goes ---Pin1 Pin2 Pin3
-------------U4 2.04 3.30 5.27
-------------U8 0.00 1.24 3.40
-------------U5 0.55 1.80 3.40--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
--- end sig file ---
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Re: vizio amber light E321VL
I have 2 of these TV -- one that works and one with the same no power/ amber light symptoms. The broke TV is getting the same readings on U8. When the working TV is off, all 3 pins on U8 is reading millivolts; when it is on, it is getting the same readings as the broken TV. This leads me to think that U8 is OK and that there is a problem upstream from here. Please advise me on how to proceed. Thanks
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Re: vizio amber light E321VL
had the same on e32vm the 1080p version i believe of this set, under one of the heatsinks was a 5amp 1000v diode shorted. i dont remember the diode number but you can't seee it for the heatsink it is marked on the bottom of the board though. there are two diodes there if one is shorted they both will read bad untill you desolder one of them then one is good the other is bad. hope this helps you out, i searched all day to find it, checked every component on the board and yes it was the last place i looked.
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