Magic Button???

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • shorteddiode
    Badcaps Veteran
    • Apr 2011
    • 221
    • USA
    #1

    Magic Button???

    Magnavox model 42MF438B/F7, Power board 272217100569 and
    main board 313926857366. It came in totally dead so I replaced the power board. Set powered on and great picture but no sound. So I replaced the main board, still no sound. Is there a magic setting I am missing for the sound. The sound adjustment shows on the screen when I adjust it. Speakers test good, no sound on any input. Any ideas??
    Attached Files
    Tags: None
    • ben7
      Capaholic
      • Jan 2011
      • 4059
      • USA
      #2
      Re: Magic Button???

      Originally posted by shorteddiode
      Magnavox model 42MF438B/F7, Power board 272217100569 and
      main board 313926857366. It came in totally dead so I replaced the power board. Set powered on and great picture but no sound. So I replaced the main board, still no sound. Is there a magic setting I am missing for the sound. The sound adjustment shows on the screen when I adjust it. Speakers test good, no sound on any input. Any ideas??
      Ummmm, did you try a different sound/video source, and a different cable?
      Muh-soggy-knee

        Comment

        • shorteddiode
          Badcaps Veteran
          • Apr 2011
          • 221
          • USA
          #3
          Re: Magic Button???

          yep, even tested my audio source on a different TV, They work fine

            Comment

            • ben7
              Capaholic
              • Jan 2011
              • 4059
              • USA
              #4
              Re: Magic Button???

              Originally posted by shorteddiode
              yep, even tested my audio source on a different TV, They work fine
              Did you check the speakers at the connector that connects to the PCB, or right at the speaker terminals? One of the could be broken (although EXTREMELY rare!)
              Muh-soggy-knee

                Comment

                • shorteddiode
                  Badcaps Veteran
                  • Apr 2011
                  • 221
                  • USA
                  #5
                  Re: Magic Button???

                  If I unplug the speakers at the board then plug them back in the speakers make a pop sound. I have not tried putting a signal to them, I thought since they made noise when unplugged and plugged back in they were fine.

                    Comment

                    • ben7
                      Capaholic
                      • Jan 2011
                      • 4059
                      • USA
                      #6
                      Re: Magic Button???

                      Originally posted by shorteddiode
                      If I unplug the speakers at the board then plug them back in the speakers make a pop sound. I have not tried putting a signal to them, I thought since they made noise when unplugged and plugged back in they were fine.
                      Oh, well then they seem fine.

                      Have you done a factory reset?
                      Muh-soggy-knee

                        Comment

                        • shorteddiode
                          Badcaps Veteran
                          • Apr 2011
                          • 221
                          • USA
                          #7
                          Re: Magic Button???

                          No, How do I do that?

                            Comment

                            • ben7
                              Capaholic
                              • Jan 2011
                              • 4059
                              • USA
                              #8
                              Re: Magic Button???

                              Originally posted by shorteddiode
                              No, How do I do that?
                              Look at the user manual?
                              Muh-soggy-knee

                                Comment

                                • shorteddiode
                                  Badcaps Veteran
                                  • Apr 2011
                                  • 221
                                  • USA
                                  #9
                                  Re: Magic Button???

                                  I'll have to download one, I don't have a remote for it either
                                  Thanks Ben7

                                    Comment

                                    • selldoor
                                      Slow Learner
                                      • Dec 2010
                                      • 7870
                                      #10
                                      Re: Magic Button???

                                      Pictures are not much use for troubleshooting - can you do better, and close ups of audio related parts.
                                      Please upload pictures using attachment function when ask for help on the repair
                                      http://www.badcaps.net/forum/showthread.php?t=39740

                                        Comment

                                        Previous template Next

                                        Related Topics

                                        Collapse
                                        • ChaosLegionnaire
                                          what i went through dealing with my mobo with dead onboard sound!
                                          by ChaosLegionnaire
                                          so i took out one of my spare gigabyte ep35-ds3r mobos from storage for use to do some cpu, ram and video card testing of stuff i bought from ebay and got for free from momaka. he bought 50 e8400 cpus for cheap from ebay some years ago and i decided to help him relieve him of some of his supply since he had waaaay too many!! what did we say about hoarding too much stuff and depriving others of them?! *cough* socialism *cough* lol!

                                          i had to blow some dust off the board and heatsinks with the datavac as i didnt clean it up before putting it in storage. after finishing...
                                          09-13-2022, 09:02 AM
                                        • themosttogain
                                          HP Envy 13-BA1565na with intermittent power button
                                          by themosttogain
                                          Hope someone can give me some suggestions on this because i'm at my wits end with it...

                                          I have an Envy 13-BA1565na here with an Intel Core i7 i7-1165G7 CPU (board is a LA-J475P Rev 1.0) which has an intermittent power button issue. The power button is integrated into the keyboard, and I have ruled out the keyboard, BIOS and battery as being the issue.

                                          Basically, on mains power, the power button works fairly well. The first time you come to it after leving it sitting (either on charge or not on charge), it might take 2 or 3 presses of the button, but then the laptop boots...
                                          07-12-2024, 03:03 AM
                                        • LEECH666
                                          Grundig Vision 9 37 9880 T USB (Chassis SR) TV Repair Help - Distorted Subwoofer Sound and overall weird sound waveforms
                                          by LEECH666
                                          Good day ladies and gentleman!

                                          I am currently trying to repair a Grundig Vision 9 37 9880 T USB LCD TV for a friend that has a weird audio problem. Basically everything works fine except for the heavily distorted sound when the Subwoofer module is connected and there is a buzzing sound coming from the PSU PCB.

                                          This seems to be a rather rare TV so there is not much prior on topic help to be found however a service manual is available at the usual sources (Electro Tanya i.e.).

                                          I think the PSU buzzing comes from one of the coils near the bridge rectifier but...
                                          01-19-2024, 05:46 PM
                                        • Christos Tsiligiannis
                                          Marian Trace Alpha sound card repair help
                                          by Christos Tsiligiannis
                                          Hello to the forum.

                                          My name is Christos, I am new to the forum here and i am posting from Greece.

                                          So i have this old German sound card from Marian, called Trace Alpha. To be exact i have 2 of them and i use them professionally for my small FM radio station here. The first one works like a charm, but the second one does not work at all.

                                          To be more specific in the same exact pc with windows 7 (i even tried 32bit) the one works while the other doesn't.

                                          So i tried asking for a schematic from the company and they would not give me one. Instead they...
                                          11-18-2024, 05:26 AM
                                        • Document Archive
                                          HP ProDesk 600 G5 + LG SJ2 Bluetooth Sound Bar ProDesk 600 i5-9500 Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the HP ProDesk 600 G5 + LG SJ2 Bluetooth Sound Bar can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the ProDesk 600 G5 + LG SJ2 Bluetooth Sound Bar boardview and ProDesk 600 G5 + LG SJ2 Bluetooth Sound Bar schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please...
                                          09-12-2024, 02:30 PM
                                        • Loading...
                                        • No more items.
                                        Working...