Question about GPX PD708B Portable DVD Player

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The sound on this DVD player (GPX PD708B) is no longer working. The only way to get any volume is by plugging headphones in to the AV out slot. Any ideas?

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  • heather_well Oct 01, 2010

    So there is no quick solution to fix the problem. We are going on a trip today and wanted it for my daughter.

  • heather_well Oct 01, 2010

    It is my mother's and I would say probably not.

  • heather_well Oct 01, 2010

    yes has to headphone jacks but nothing comes out will try restore to default

  • heather_well Oct 01, 2010

    tried the restore default but did not sound



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Sounds like the headphone jack might be broken, because the sound goes over the headphone jack to the speakers on the unit.

The headphone jack, disconnects the signal going to the internal speaker when a plug is plugged in.

If the headphone jack cracks, breaks, or simply doesn't pass on the signal then you will not get sound from the speakers.

Since you get sound from the headphones, that might be the issue. OR it can be a problem with your speakers.

In any case to solve the problem the unit needs to be taken apart and the headphone jack inspected, and speaker tested.

Posted on Oct 01, 2010

  • 2 more comments 
  • Ekse Oct 01, 2010

    is the unit in warranty? taking it apart will void the warranty, this will definitely be covered by warranty.

  • Ekse Oct 01, 2010

    I'll check if there is anything that we can do without taking it apart and get back to you in a moment.

  • Ekse Oct 01, 2010

    The player has two? Headphone jacks, do you get anything out from them or are you using one of the Audio / video output jacks?

    You can try restoring the unit to defaults while its on full-stop mode, or the disc tray is empty, Press the setup button on the remote control. Find system page. then default.

    You can also take a look into Speaker setup pages and see if there is anything that might help. Also the system page has a Audio part, take a look there as well.

  • Ekse Oct 01, 2010

    okay, then the problem must be to the direction of what I mentioned in my first message. so it can be used with headphones but the speakers wont work currently. You may want to take the player to a local TV / VCR, or such, repairer to get a estimate / their opinion on it.

    Or if your handy with a screwdriver and you think you could take it apart and put it back together without breaking it, I can assist you in that.

    There does not seem to be a simple quick fix for this - to me from what you have told me it seems like a hardware problem. Either the speakers are faulty, which is unlikely, or then the they are not getting the signal / audio. So a possible reason for that is a faulty headphone jack. Since you do get sound from headphones, the player appears to be OK aside from the signal not reaching the speakers.

    I had the same problem on a phone some time ago, I recorded a video of the issue. This will probably not help you at all, and on top of that I spoke finnish during the video, didn't think I would put it online at any point.

    But the point of this video is: the phone had a faulty headphone jack, and the sound wasn't getting passed along, it only worked via headphones. You can see when I connect the two pins together that pass the "signal" along, the music starts to play from the speaker of the phone and when I release it does not play from the speakers, it basically thinks due to the faulty headphone jack that there are headphones plugged in and it stops the sound at the headphone jack.

    Again I spoke Finnish during the video, noting important, just ignore it :)



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When you insert the headphones, there is a switch that cuts off the internal speakers. Yours is faulty or the amplifier section has failed.

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Looks like several people have this problem. I downloaded a copy of the manual to see if it had any hidden secrets, but no luck (I don't have one of these).

This thing has a couple of modes (DVD or A/V input) that you switch between by pressing and holding the STOP/DVD/AV button in until it switches. Try switching the mode a couple of times. Maybe the thing is expecting external audio.

Other than that there doesn't seem to be any cause other than a defective unit. These things are made in such quantity and at such low cost that there will always be duds. If they are still within the return period where you bought them, then take them back for exchange and test them at the store. If you can't do that, contact GPX at the phone number or website about replacing it.

(I personally don't buy GPX for the simple reason that their stuff has problems sometimes. I went through 3 CD boomboxes once and swore never again for this brand.)

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