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Sharp GF9494 renovation

Discussion in 'Tech talk' started by bugpat, Jun 1, 2017.

  1. bugpat

    bugpat New Member

    Messages:
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    Location:
    FRANCE - South east : Luberon
    Hi guys,

    I recently acquired this big box, wishing to use it at the end of the month, for an indoor aeromodelism exhibition, where we will be 9 guys flying with homemade "angry birds plane", while playing music of the game (on a tape, of course !)...

    So that was a very good excuse to buy this boombox !!! [​IMG]


    It was in good cosmetic condition, except the metallic faceplate.

    I had to change the capstan tyre (but as an aeromodeller, I've got RC fuel line), and the pinch roller too.

    A lot of cleaning, removing tons of dust, erasing stains, respraying, polishing, soldering... And I added a li-po battery, 14,8V - 5000mAh with a low batt alarm giving a lot of autonomy (I don't really know how much time, but more than 3 hours)...
    This box has been fixed before, I found an underpowered 12v 0,62A PSU inside !!! I guess it should be 15V and more than 1A ??? The sound on high volume was bad, and is now louder and far better while operating on battery...

    I will post a query later on "boombox & parts wanted" for a faceplate and psu...

    Here are some pictures :



    The picture of eBay, where I bought it. You can't really see the very marked faceplate... I removed it and tried to fix it. It's better, but far from perfect now. If I can't find another one, I think I'll sand it and polish, and will redo the letters (with a plotter to make masks and black spray)...





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    The too small PSU :



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    Final result (for the moment) :



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    Installing and operating on battery :



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    And with the low-batt alarm :



    [​IMG]





    That's all for today !

    And sorry for my strange english, I'm french !!! [​IMG]
     
  2. bugpat

    bugpat New Member

    Messages:
    24
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    Location:
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    This is a repost of the topic I started on 10/23/15
    By the way I'm still after a faceplate :biggrin:
     
  3. Brutus442

    Brutus442 Well-Known Member

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    Location:
    Toronto
    Fantastic work! I wish I had some of your talent!
     
  4. bugpat

    bugpat New Member

    Messages:
    24
    Trophy Points:
    3
    Location:
    FRANCE - South east : Luberon
    Hi all,
    I'm still after this faceplate for my "Scarface 9494", can't find one here in France. If you do have one, please send me a PM with your conditions. :thumbsup:

    [​IMG]
     
  5. Reli

    Reli Well-Known Member

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    Location:
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    Nice work. These are some of the best-looking radios, because of the chrome trim around the speakers.
     
  6. T-ster

    T-ster Moderator Staff Member S2G Supporter

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    Location:
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    Hmm any info on adding the rechargeable battery? Are they easy to wire in?
     
  7. bugpat

    bugpat New Member

    Messages:
    24
    Trophy Points:
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    Location:
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    Yes, it's really easy to add a battery : Just 2 wires to solder, one end where the + and - arrive on the motherboard (or on the battery compartiment) and a plug compatible with your battery the other end. I choosed a 4S lipo (14,8v) 5000 mAh. Don't really know how much autonomy that will give, but more than 3 hours...
    Li-po batteries are powerful and small, this is a great evolution, particularly when you're in aeromodelism :biggrin:
    The only bad things are that first, you need a dedicated Li-po charger and second, you must not over discharge the battery (that will kill it). So I used this little "Lipo saver" which will beep loudly when time to stop will arrive...Everything goes in the battery compartiment.
    I bought all that stuff at hobbyking, big online RC model shop, and you can choose to buy in their Hong Kong, United Kingdom, USA, or Holland online shop...


    [​IMG]
     
    Last edited: Oct 3, 2017

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