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mmbe

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Posts posted by mmbe

  4. Posted

    Forgot to mention the system has a LED back light mod. The screen flicker is like a candle flame shimmering or pulsing. It stops (or becomes fainter) when you turn the brightness down. The screen is white with the brightness wheel turned up. Believe I now have it set to the middle setting as you suggested.

     

    I have briefly tested 5 games and the screen looks the same as if there is no cartridge inserted. I can't comment on the sound as I swapped its working sound board with another Game Gear where the sound board wasn't working (both the speaker and head phone jack).

     

    Was the link I provided in my previous post (#13) something I should be looking at?

     

    Thanks for your help.

     

     

  6. Posted

    19 hours ago, gamegrid2084 said:

    Well, without actually getting into the GG to see what could be wrong, it's really tough to diagnose this kind of problem. On the Game Gears that I have worked on, the white screen you are describing (with the brightness knob working) happens when there is no cartridge in the GG. It also happens when the GG does not think a cart is inserted, even when one is. Usually this means a bad cart, but could also mean a bad cart slot on the GG, or even an internal component failure. You mentioned that you've tested the games on another GG, so bad carts can be ruled out. The other two possible issues are very hard to narrow down without a bunch of little tests to figure things out. In any case, even if it were a bad cart slot or some internal component failure, you'd probably need to have someone repair it (unless you are up for tinkering around inside your Game Gear). I'd be happy to run down the list of tests that I would do, if you're up for it...

     

    Sure I would appreciate any tests or tips you can provide to troubleshoot the system.

     

    I found this web page showing a repair involving the cartridge slot:

     

    http://laptoprepairpro.com/sega-game-gear-repair-part-1/

     

    The screen does flicker when rotating the brightness wheel.

  9. Posted

    All of the games worked fine on the other Game Gears that I have so it's not the cartridges. The system with the issue was not stored with a game inserted in the cartridge slot.

     

    No sounds play with this system. The sound board is fine because I tried with another GG.  All I get is a white screen when I turn on the system with a game inserted - no sound and no picture.

  15. Posted

    On 6/3/2020 at 12:04 PM, CatPix said:

    As I said, the pack adapter I have is a model you clip on your pants/belt, and inside, you have a very common Nikko toy 7.2V battery back (up to even the connector being the same).

    .

    Which brand of 7.2V battery has the same connector as the original battery? I'd like to update mine but would prefer not to have to solder the old connector to the new battery.

     

    Thanks.

  16. Posted

    About 8 years ago I had a complete recap done on my Sega Game Gear. Until quite recently it worked fine.  Now no matter what game I put in, all I get is a blank white screen with no sound.  All games have been tested on another Game Gear and work fine.

     

    Anyone have an idea on what could be the problem? Am I looking at replacing one bad capacitor or do I need to have a complete recap done?

     

    Any help/ideas would be greatly appreciated.

  23. Posted

    I have the manual.  Only about 4 pages are actual instructions.  The rest are the copyright information and ads for other Telegames Lynx titles.  If you're still interested, I can scan those 4 pages and post them here.

  24. Posted

    From Jungle Guide Issue #2:

     

    Expert Mode: On title screen, press Opt 1 + B + A

     

    Full ammo on every mission: On title screen, press Opt 1 + Up + B

     

    Stealth armor on every mission: On title screen, press Opt 1 + Down + B

     

    Mission Skip: On the mission screen, hold either left or right and press Opt 2.  You can select any mission except Firebase #2.

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