I have a VIZO that gets power to the front VIZO logo, it glows. However the TV will not power on. I thought mabe you guys could point me in the right direction. The model number is VW42L HDTV10A. Thanks and have a blessed day.
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42" VIZO Television Will Not Power On
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Re: 42" VIZO Television Will Not Power On
At least the 5vdc standby power supply is working. We need good clear pictures of the boards and how all the boards are connected together, the good closed up pictures of the power supply board connectors so we can read the labels on them. Use GO ADVANCED to upload the pictures.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: 42" VIZO Television Will Not Power On
Originally posted by Cubone222 View PostI have a VIZO that gets power to the front VIZO logo, it glows. However the TV will not power on. I thought mabe you guys could point me in the right direction. The model number is VW42L HDTV10A. Thanks and have a blessed day.The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
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Re: 42" VIZO Television Will Not Power On
Originally posted by Cubone222 View PostI have a VIZO that gets power to the front VIZO logo, it glows. However the TV will not power on. I thought mabe you guys could point me in the right direction. The model number is VW42L HDTV10A. Thanks and have a blessed day.
I also replaced U33 (exact same part number as U7) since it is a common failure. Good Luck!
http://www.digikey.com/product-detai...SCT-ND/1967218
Digi-Key Part Number NCP1117STAT3GOSCT-NDLast edited by MisterD; 10-27-2012, 10:20 AM.
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Re: 42" VIZO Television Will Not Power On
Originally posted by MisterD View PostI just repaired the same exact model Vizio, it had the orange Vizio logo and would not power on, I was able to check voltages on the main board and Voltage regulator U7 had normal input voltage of 3.3v but very low output of only .8v (should have been about 1.25 to 1.30) here's my voltage readings that I had. 0n U7 rightmost pin was 3.3v, middle pin was .8v, left pin was .01 v but after replacing U7 the middle pin/output voltage was 1.27v and the set returned to normal operation. cost of 49 cents plus shipping from Digikey
I also replaced U33 (exact same part number as U7) since it is a common failure. Good Luck!
http://www.digikey.com/product-detai...SCT-ND/1967218
Digi-Key Part Number NCP1117STAT3GOSCT-ND
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Re: 42" VIZO Television Will Not Power On
OK, on the power supply board as shown in your pictures, there are 3 white connectors on the top side of the board, check and see if you have 24v and 12V on those pins.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: 42" VIZO Television Will Not Power On
Yes you need digital volt meter, black probe on the chassis, red probe on the 24V pin.
Do not touch the board with your hands.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: 42" VIZO Television Will Not Power On
Originally posted by budm View PostOK, on the power supply board as shown in your pictures, there are 3 white connectors on the top side of the board, check and see if you have 24v and 12V on those pins.
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Re: 42" VIZO Television Will Not Power On
Originally posted by budm View PostYes you need digital volt meter, black probe on the chassis, red probe on the 24V pin.
Do not touch the board with your hands.
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Re: 42" VIZO Television Will Not Power On
Is the logo white or amber?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: 42" VIZO Television Will Not Power On
To get 12V and 24V though the TV -will- need to be powered on.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: 42" VIZO Television Will Not Power On
Thanks tom66 Yes you do have to have the set powered on to get the 12v or 24v But if you want to check voltages on the small voltage regulators known as LDO'S on the main board you may be able to so with the set plugged in and the amber Vizio light being on meaning it is in standby mode. Check all 5 small regulators on this board, U2, U7,U8,U9 and U33, write down separately the voltages found on each one..and reply back with what you found. with the tab at the top and the 3 pins at the bottom far left is pin 1 which is the adjustment pin or ground, middle pin is pin 2 it is the output voltage and far right is pin 3 it has the input voltage, the tab and middle pin are connected so those will have the same voltage reading.
Go here.. https://www.badcaps.net/forum/showth...ighlight=vizio
to see what I checked and found while troubleshooting my Vizio VW42LHDTV10A, I had help from budm and Tom66, they both were a great help to me in diagnosing so I could make the needed repairs.
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Re: 42" VIZO Television Will Not Power On
Originally posted by MisterD View PostThanks tom66 Yes you do have to have the set powered on to get the 12v or 24v But if you want to check voltages on the small voltage regulators known as LDO'S on the main board you may be able to so with the set plugged in and the amber Vizio light being on meaning it is in standby mode. Check all 5 small regulators on this board, U2, U7,U8,U9 and U33, write down separately the voltages found on each one..and reply back with what you found. with the tab at the top and the 3 pins at the bottom far left is pin 1 which is the adjustment pin or ground, middle pin is pin 2 it is the output voltage and far right is pin 3 it has the input voltage, the tab and middle pin are connected so those will have the same voltage reading.
Go here.. https://www.badcaps.net/forum/showth...ighlight=vizio
to see what I checked and found while troubleshooting my Vizio VW42LHDTV10A, I had help from budm and Tom66, they both were a great help to me in diagnosing so I could make the needed repairs.
See these three photos.Last edited by Cubone222; 10-28-2012, 01:52 PM.
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