Question about Sanyo MM-8300

1 Answer

Keys will not work

My Sanyo MM-8300 phone buttons will not work. But if I pull out the battery...reinstall it...and hit the on button...it will turn on without hesitation. But none of the buttons will work there after...including the power button.

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  • Cavscout1 Jan 11, 2008

    That button will not work either...now it displays "PHONE OFF" in the upper right corner of the screen. Also, the right side key for the recorder will work but then I cannot do anything after that it will be stuck there unless I pull the battery out.

  • ncbeachgirl Feb 12, 2008

    I have the sanyo mm8300 and the top two buttons for web and memo don't work and also the back button and the speaker button don't work either. I have not dropped this phone or had it in water, the buttons just stopped responding and now I can't send text messages or delete pics or reply to text messages, go back or back space. I found the unlock code in security but when I enter 0000 it says code invalid. Can someone help?

  • frank2000 Mar 15, 2008

    I have the same problem

  • katfey Mar 27, 2008

    same problem and the unlock suggestion did not work

  • Johnny1900 Apr 03, 2008

    The phone will turn on when i take the battery out and put it back in but none of the keys will work including on/off. The only button that works is the recorder button on the right side of the phone but after you press it, it gets frozen there? must get numbers off of the phone, ahhhhh help.

    (the phone will turn on by its own if I remove the battery and replace it, the lights on the phone will come on and I can recieve calls and awnser them by fliping up the screen but that is it, can not end a call cept to remove the battery)

  • Anonymous Apr 04, 2008

    I have the exact same lock up problem down to having the only button that does anything be the recorder button.

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  • Master
  • 589 Answers

Sounds like you locked the keypad.

I know you stated all the keys don't work, but let's give this a try.

Press the "unlock" key (the key in the upper left)

Enter your lock code (usually 0000)

Let me know if this helps.

Posted on Jan 11, 2008

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One thing you could test for is a thermal-fault in the phone's circuitry. To do this, you put your phone in the fridge over-night then, turn it on the next day and try the keypads while it's still cold from the fridge. If that doesn't help and you're brave enough to venture into the inner-workings of your phone to attempt repair/cleaning, you can read my post here- keys won't work on sanyo mm 8300 phone.
Hope this helps, TechnoWolfy.

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I used a very small eyeglasses-repair flat-bladed screw-driver that was the same width as one side of the tri-angle screw head to remove the screws on half of a sanyo scp-8300 phone that I found on the road. I do advise caution when releasing the hidden plastic clips around the edge of the phone where the seam between top and bottom is. Once open, you will find a ribbon-cable that leads to the top half of the phone, a rubber pad that has all the keys on it, and the phone's circuit-board, where there is a white plastic sheet overlaying the actual physical buttons mounted on the circuit-board. My advice would be to gently clean the rubber key-pad with warm water and dish-soap. Also, check for sticky gunk around the edges of the key-holes in the plastic case of the phone, if you find some- carefully wash it off with a wet tissue or a cotton swab, use rubbing alchohol if it won't clean off. But, be aware that some plastic can melt or turn gooey when cleaned with alchohol, or it might just remove the color from it. Hope this helps, TechnoWolfy.

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I'd suggest a new battery, if money is no problem but otherwise, if you have a volt-meter of some kind, you could read the voltage output of the charger and compare that to what it says it should be in the input-output list usually printed on the underside. If it's fine, I'd try carefully cleaning the phone's battery and charger contacts with a small amount of rubbing alchohol and some cotton swabs or tooth-picks lightly wrapped in toilet or tissue paper. If it still refuses to work, you could see if a sales-clerk at your local phone store would let you try a new battery to see if it would work. Otherwise, you could attempt internal repair/cleaning like I outlined here- keys won't work on sanyo mm 8300 phone.
Hope this helps, TechnoWolfy.

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Jun 03, 2007 | Sanyo MM-8300

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If you have a cable for connecting it to your computer, you might be able to get it working again. Otherwise, I'd suggest removing the battery and putting the phone and the battery (separate) in the fridge over-night. The next day, insert the battery and turn the phone on to see what happens. If it's still stuck in recovery mode, I'd advise seeking help at your local phone store or sending an email to sanyo asking for any codes they could supply.
Hope this helps, TechnoWolfy.

May 16, 2007 | Sanyo MM-8300

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