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Toshiba Regza 40XV648 TV Sound Garbled After a While

Discussion in 'Do It Yourself (Not Computer-Related)' started by Cookiegal, Mar 25, 2020.

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  1. Cookiegal

    Cookiegal Administrator Malware Specialist Coordinator Thread Starter

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    I bought this Toshiba Regza 40XV648 - 40" flat screen TV ten years ago.

    Lately, after it's been on for several hours the sound starts getting garbled. To described it I'd say it sounds like when voices are disguised on the news so you can't identify the people only it's so much that I can't make out what they are saying.

    I looked in the manual and all they say for general sound issues is check the connections and I've done that and everything seems tight and secure.

    I receive my signal through Bell's Satellite service.

    When it occurs it's the same whether I'm watching something prerecorded on my PVR or whether I'm watching a channel. If I change to different channels the problem remains constant. Even if I'm watching something prerecorded and switch to a different prerecorded show the garbling also remains constant.

    There is a quick fix for now which is simply to turn the TV off (not the PVR). When I turn the TV back on it's fine again. I don't know how long it would be fine because this is generally late in the evening when it occurs. So far, I haven't had it happen twice in the same day.

    So is this indicative of it being on its last legs or could it be a specific component that can be replaced or something else altogether? I suspect the TV myself but was hoping there could be some other cause that would be easier as I don't want to run out and buy a TV right now and I need to be able to hear the news with everything that's going on these days.
     
    Last edited: Mar 26, 2020 at 12:58 PM
  2. TerryNet

    TerryNet Moderator

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    Just remove the few tubes in the Sound section, test them at Radio Shack, and replace the one (maybe two) that tests bad. Oh, wait. I'm showing my age. That goes back considerably more than ten years. More like 40+ years!

    In my (lack-of-knowledge) opinion there is only a small chance that a component can be replaced for a reasonable cost and even less chance that you or I can do it. You might call a TV repair place (do those still exist? shut down for now?) to see what they say.
     
  3. valis

    valis Moderator

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    I agree with Terry. The cost of tv's nowadays sorta precludes repairing them. IMO, another example of our 'disposable society'....
     
  4. Gr3iz

    Gr3iz

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    Does it do the same with an external sound system? You should be able to connect to either the TV or the satellite box. Otherwise, I'm inclined to agree with everyone else on the cost effectiveness of repair vs. replace.
     
  5. Cookiegal

    Cookiegal Administrator Malware Specialist Coordinator Thread Starter

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    Hey wise guy! :D Actually when I bought this one I was probably the last person on earth that still had a old Zenith console TV...yes, a console! It was huge but it was an attractive piece of furniture. :)
     
  6. Cookiegal

    Cookiegal Administrator Malware Specialist Coordinator Thread Starter

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    It's not that I don't want to buy a new one it's just given the current crisis I don't want to go out to shop for one. :(
     
  7. Cookiegal

    Cookiegal Administrator Malware Specialist Coordinator Thread Starter

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    Good point. I'll see if I can figure out how to hook it up to my sound system speakers but I'm not sure I will be able to. I'll have a look in the manual to see if it shows a diagram on how to do that.
     
  8. Cookiegal

    Cookiegal Administrator Malware Specialist Coordinator Thread Starter

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    I just thought of something I should mention. Not long after I got the TV I had a guy in to paint my living room. I had the TV covered and moved away from the way and he said that would be fine but then he fell off the ladder and took the TV with him. He wasn't hurt and the TV only got a small scratch on the frame but nothing on the screen and everything worked fine for years after that.
     
  9. Gr3iz

    Gr3iz

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    Probably no connection ... You would likely have noticed symptoms immediately.
     
  10. Cookiegal

    Cookiegal Administrator Malware Specialist Coordinator Thread Starter

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    I figured as much. Thanks Mark. :)

    And Thanks Terry and Tim as well for your comments.
     
  11. TerryNet

    TerryNet Moderator

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    You're welcome. And I agree with Mark's comment plus his advice to connect an external speaker if possible.
     
  12. managed

    managed Trusted Advisor Spam Fighter

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    This sounds like (I know, sorry) a problem in the audio amplifier circuit inside the TV, or it's power supply. Probably not practical to get that repaired due to lack of repair shops these days and the expense if you do find one.

    As mentioned a possible workaround is to take a low-level audio signal from the TV and connect it to a sound system's amplifier and speakers. This should be possible but you will have to check at the TV and Sound System for suitable output and input sockets and then get a compatible cable.

    If you post the Sound System make and model, or a picture of it's input/output connectors, and a picture of the TV's or a pic of the relevant manual page(s) or a link to the manual(s) I can try to help more.
     
    Last edited: Mar 26, 2020 at 4:07 PM
  13. Cookiegal

    Cookiegal Administrator Malware Specialist Coordinator Thread Starter

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    Thanks Allan. All it says in the manual about connecting to an audio system to use external speakers is "you will need standard audio cables" and they have two diagrams, one of the back of an amplifier where you put one in each of the left and right "line in" connections, then they show the back of the TV where you plug them into "Fixed Video Out". They don't say anything about the colour of these wires.

    I have many cables so I'm sure I have the right ones, it's just a matter of identifying them. I can tell you that it was once set up to view DVDs with audio through the speakers at the beginning but I had a different amplifier and speakers at the time and I never watched DVDs so I took it all apart. Now I just have the HDMI cable from the TV to the PVR.

    I can work on this tomorrow and take pictures of everything for you. It involves pulling the stand away from the wall but gives me a good excuse to clean behind and under there :D so it's a good project to work on while sequestered. :)

    My amplifier (Yamaha) and speakers (Paradigm) are recent and high quality/performance.
     
  14. managed

    managed Trusted Advisor Spam Fighter

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    Ok, as long as you don't mind doing all that I'll do my best to help.
    You have to match the output level from the TV to the Sound System input level, it should be possible.

    There is a chance the garbling occurs before the output sockets from the TV which means it will still be there but we won't know until you try it.
     
  15. Cookiegal

    Cookiegal Administrator Malware Specialist Coordinator Thread Starter

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    It's worth a shot. Thank you for being willing to give it a try. :)
     
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