I have a VIZIO E422AR with no power, no logo light. Totally dead the power board tested good.
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Re: Vizio e422ar
Moved out of FAQ. Please don't post questions there!sigpic
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Re: Vizio e422ar
"Totally dead the power board tested good." Can you please clarify the voltage readings for us? Pictures of the boards?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 e422ar
Here is my photos the power board 4H.B1800.001/C has all 12v present and 3.292v
main board gets really hot L32M95.MB 48.73401.011
IC#7 LD1117AG
tab 3.326
pin1 0.010
pin2 5.060
IC#2 LD1117AG
tab 3.306
pin1 0.009
pin2 5.060
U5 LD1117AG
pin1 0.004
pin2 1.197
pin3 3.304
IC#3 LD1117AG
tab 2.118
pin1 0.010
IC#6 LD1117A
pin1 0.007
pin2 3.302
pin3 5.065
U1 LD1117A
pin1 0.007
pin2 3.302
pin3 5.065Attached FilesLast edited by 24V; 06-25-2013, 11:08 PM.Comment
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Re: Vizio e422ar
I have a similar problem with the same tv, my logo light is on when I turn on the tv with remote or the set the backlight comes on I get the vizio logo as normal but where it would go the the next step (hdmi1 retrieving data please waiting) it cuts off. I have the same power board as the above picture and I have replaced 3 caps that I could find at radioshack although none are/where bulging or appeared damaged. any suggestions?Comment
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Re: Vizio e422ar
Hello colleagues I came this vizio tv and does not bring the transistor QM1 someone of you can give me the number of the transistor, in advance thanksComment
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Hi everybody!
I've got a Vizio E65-F0 smart tv that is good and dead. It shows no signs of life when I press the power button on the back. The power LED in the lower right corner doesn't light, there is no backlight and no picture.
So I took the back off and started poking around figuring one or more of the caps had dried out. My esr meter says all the caps on the power supply board and the mainboard are less than 1 ohm.
I decided to check the voltages coming off the power supply they are as follows:
connector CN201
pin 1 (18vsb1)... -
Machine won't power on, no power led, no fan spin, completely dead.
Checked PQ5400 - AONS32314 and pins 5,6,7,8 are 20v (AC adaptor voltage) but pins 1, 2, 3, 4 are 0v.
Following Gate Pin 4 to PU5400 - BQ24780SRUYR.
VCC 20v
ACDET 2.8v
ACDRV 0v (goes to pin 4 gate of AONS32314).
ACOK 0v
REGN 6v
According to datasheet, conditions are correct for ACOK to be high but it is not.
Tracing ACOK it's connected to ACIN which is connected to a pin GPB0 of IT8227 but also shown as connected to +3VL via a 100k resistor... -
Recently had my bedroom Vizio D40u-D1 apparently die while it wasn't being used. Noticed the power LED flashing, figuring maybe a software upgrade, but attempting to turn it on proved that wasn't the case. When powered on, the power LED will flash a bunch of times after about 2 minutes then turn off again. Definitely is no picture even with a flashlight on the screen. Had the opportunity to open it up over the weekend. Doesn't apper to be anything out of the ordinary visibly inside, nor any odd smells of escaped magic smoke. Readings from the connector in the corner of the power supply board...
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Hi. Anyone who has experience with these vizio sets, which pin on this connector is the standby, the 5V pin? Trying to rule out the PSU before ordering a mainboard. I'm getting 0 Volts on all pins on this connector. Trying to jump the standby and PS ON pins to see if the PSU is functioning. Thanks in advance. -
hi to all! please help with 2 imac 21,5 dead...
i already changed u7700 in both without luck
u7700 pin 17, 18, 5, 4, 24, 12
have those voltages in both imac..
12v, 5v, 5v, 5v, 0,3v, 3,9v
i have 3V3_S5 (L7710) in one imac (one led) but no 5v on L7750
NO SHORT ON L7750
i have not 3V3_S5 (L7710) in the other (no led)
PLEASE HELP I'M GOING CRAZY!!01-25-2024, 01:46 PM
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