Re: Help- Vizio VW42L HDTV10A
yes it is a K1117S15. I am learning here
Thank you for your patience. So this means U9 is bad?
yes it is a K1117S15. I am learning here
Thank you for your patience. So this means U9 is bad?
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Re: Help- Vizio VW42L HDTV10A
Look at your readings in post 33. You measured pin 2 at 1.51V. As PlainBill would have done if he wasn't MIA, he would ask you is this good or bad now that you know how to interpret the part number?
Hint: Reread posts #34 and #40 again slowly.--- begin sig file ---
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Re: Help- Vizio VW42L HDTV10A
Thank you so much for your help. I will make sure that I check the surrounding capacitors as you suggested and order a new regulator. Thank you for responding back so quickly on my posts
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Re: Help- Vizio VW42L HDTV10A
Selldoor also helped someone figure out that U2 was bad
https://www.badcaps.net/forum/showthread.php?t=20801--- begin sig file ---
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Re: Help- Vizio VW42L HDTV10A
Hi all!
I have a bad U9 on my main board
Can anyone provide Digikey part number for K1117S15 that is on the main board?
Thanks!
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Re: Help- Vizio VW42L HDTV10A
1) Post a picture of your U9 so we know what package it is. Follow my sig file exactly for posting a picture.
2) What are your readings for U9?
3) In digikey, click on "in stock" and type in "1117 1.5v regulator" into the search field. Once you have correct package type selected, your choices will narrow down significantly.--- begin sig file ---
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Re: Help- Vizio VW42L HDTV10A
I will post a pic and get readings as soon as I get back home from a trip. Thanks! You guys are so helpful!!!!Comment
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Re: Help- Vizio VW42L HDTV10A
Plugged it in, hit the power button and took the following voltage readings:
U9
Pin1=0
Pin2=1.5 volts
Pin3=4 volts
U7
Pin1=.03 volts
Pin2=1.27 volts
Pin3=4.03 volts
U33
Pin1=2.79 volts
Pin2=4.03 volts
Pin3=5.10 volts
U8
Pin1=2.04 volts
Pin2=3.28 volts
Pin3=5.15 volts
Here's a picture.....
Thank you!Attached Filesif you find these attachements useful please consider making a small donation to the site
Last edited by Amuyamula; 07-27-2012, 12:27 PM.Comment
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Re: Help- Vizio VW42L HDTV10A
U33 it's bad. Should be 3.3V(where do you have 4V) and it's supplying the U7 and U9 with higher voltage.Comment
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Re: Help- Vizio VW42L HDTV10A
Know any Digi-Key part numbers for these 4 regulators?Comment
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Re: Help- Vizio VW42L HDTV10A
Amc1117
FD7416
and
K1117S15
736Comment
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Re: Help- Vizio VW42L HDTV10A
http://www.digikey.com/product-detai...98-1-ND/705738
http://www.digikey.com/product-detai...ICT-ND/1301519
Now my question to you is:
Do you think U9 is still bad?--- begin sig file ---
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Re: Help- Vizio VW42L HDTV10A
Being a newbie at this, I can only doubt its bad so Im going to swap it out.Comment
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Re: Help- Vizio VW42L HDTV10A
Your #40 post indicates that maybe U9 is bad. Thanks for all your help!!!!Comment
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Re: Help- Vizio VW42L HDTV10A
OK, then I will replace U33 since that isn't outputting 3.3v.Comment
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Re: Help- Vizio VW42L HDTV10A
If you are not sure how to solder surface mounted device, just take it to the local shop and give them the new part to install instead.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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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... -
vizio e650i-a2 (LWJAOZBP Serial) led backlight flashes then turns off, has video (via flashlight) and audio.
panel: au optronics T650HVN05.4
72 led total on 12 strips, 6 led per strip wired in three groups of 24 (led driver board has three anode and three cathode pins)
link to datasheet: https://datasheetspdf.com/pdf-file/8.../T650HVN05.4/1
Vizio 56.04219.641G (liteon PA-3231-01WN-LF) Power Supply Unit
https://www.shopjimmy.com/vizio-56-0...-power-supply/
Vizio 55.75J01.001G (91.75J10.004G) Main Board... -
Hi.
picked up another TV. This time is a Vizio M65-C1. TV does not turn on. I had repaired another 60 inch vizio , Bad main board.
When power button is pressed, the Power led indicator on the bottom right, turns for a few seconds and then it fades away. No backlight or Vizio logo on screen. Removed back cover and repeated test.
This is the TV This TV is a little different from the Samsung I have worked on. Power supply is on the Left side, Main Bd is on the right side, T-CON , not in the picture is on the bottom. I am assuming that the boards in the middle are the LED... -
Hi all, I just want to share the repair of my 60PK550-UA TV set.
The TV set was powering on, just no image. After verification, nothing wrong on the YSus or ZSus boards. Nothing wrong on the main board either.
But I noticed that the LED was not flashing on the Logic Control Board. This is an EBR63450301. The LED is supposed to flash even with all the flat cables disconnected, with only the power cable attached.
All the voltages measured at the electrolytic capacitors on the board were good. From top left to bottom right:
C57: 3.30V
C61:...07-20-2023, 12:38 AM -
Failure Symptom
No picture, just red vertical stripes. Google search shows quite common problem for these recent Vizio M series although red vertical stripe pattern may differ. Some call it "Netflix" boot screen haha.
Where is the short?
Panel has 4x buffer boards. Quickly found the 1/4 panel buffer board with the problem by selectively disconnecting buffer board flex cables.
Having recently fixed another Vizio with similar symptoms that was a shorted ESD diode array ( link ) Probed the ESD diode array but...
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