Announcement

Collapse
No announcement yet.

Help- Vizio VW42L HDTV10A

Collapse
X
Collapse
 
  • Page of 4
  • Filter
  • Time
  • Show
Clear All
new posts
Previous 1 2 3 4 template Next
    #41
    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?

    Comment

      #42
      Re: Help- Vizio VW42L HDTV10A

      Originally posted by XmouseX View Post
      So this means U9 is bad?
      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.
      Last edited by retiredcaps; 06-27-2012, 12:16 AM. Reason: added post #34 comment
      --- 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 ---

      Comment

        #43
        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

        Comment

          #44
          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 ---

          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 ---

          Comment

            #45
            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!

            Comment

              #46
              Re: Help- Vizio VW42L HDTV10A

              Originally posted by Amuyamula View Post
              I have a bad U9 on my main board
              Can anyone provide Digikey part number for K1117S15 that is on the main board?
              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 ---

              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 ---

              Comment

                #47
                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

                  #48
                  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 Files
                  Last edited by Amuyamula; 07-27-2012, 12:27 PM.

                  Comment

                    #49
                    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

                      #50
                      Re: Help- Vizio VW42L HDTV10A

                      Know any Digi-Key part numbers for these 4 regulators?

                      Comment

                        #51
                        Re: Help- Vizio VW42L HDTV10A

                        Originally posted by tibimakai View Post
                        U33 it's bad. Should be 3.3V(where do you have 4V) and it's supplying the U7 and U9 with higher voltage.
                        This is exactly why I always ask for actual readings.
                        --- 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 ---

                        Comment

                          #52
                          Re: Help- Vizio VW42L HDTV10A

                          Originally posted by Amuyamula View Post
                          Know any Digi-Key part numbers for these 4 regulators?
                          Provide the actual part numbers of your regulators. The part numbers in your pics are not readable.
                          --- 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 ---

                          Comment

                            #53
                            Re: Help- Vizio VW42L HDTV10A

                            Amc1117
                            FD7416

                            and

                            K1117S15
                            736

                            Comment

                              #54
                              Re: Help- Vizio VW42L HDTV10A

                              Originally posted by Amuyamula View Post
                              Amc1117
                              FD7416

                              and

                              K1117S15
                              736

                              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 ---

                              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 ---

                              Comment

                                #55
                                Re: Help- Vizio VW42L HDTV10A

                                Being a newbie at this, I can only doubt its bad so Im going to swap it out.

                                Comment

                                  #56
                                  Re: Help- Vizio VW42L HDTV10A

                                  Originally posted by Amuyamula View Post
                                  Being a newbie at this, I can only doubt its bad so Im going to swap it out.
                                  Start with post #31 and re-read everything until your first post.
                                  --- 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 ---

                                  Comment

                                    #57
                                    Re: Help- Vizio VW42L HDTV10A

                                    Your #40 post indicates that maybe U9 is bad. Thanks for all your help!!!!

                                    Comment

                                      #58
                                      Re: Help- Vizio VW42L HDTV10A

                                      Originally posted by Amuyamula View Post
                                      Your #40 post indicates that maybe U9 is bad. Thanks for all your help!!!!
                                      Nope. Your U9 is good. You report pin 2 is 1.5V for U9. The part number tells us that the expected output voltage is 1.5. So your U9 is good.
                                      --- 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 ---

                                      Comment

                                        #59
                                        Re: Help- Vizio VW42L HDTV10A

                                        OK, then I will replace U33 since that isn't outputting 3.3v.

                                        Comment

                                          #60
                                          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=24809

                                          Comment

                                          Previous 1 2 3 4 template Next
                                          Working...
                                          X