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SiberianSpForces

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Posts posted by SiberianSpForces


  1. I did replace the 2 transistors and the 3 0 reading resistors. The 3 still reads 0, but one of the 2, behind the power input(closest to the ribbon), will read 4.## after three or so minutes after powering the board up. I might look into a new speaker? I don't know a for sure way to test s speaker this small.


  2. Cool beans! I found a text file with some technical info for the D&D game. With the black probe on pin 4 and red on pin 20 I got 6.03, then with red on pin 20, black on the battery clip ground solder joint; 6.02. Hopefully in the morning I can run to the local electronic shop and snag the resistors and transistors.


  3. Checked the diode, one direction gets the overload display, then the other direction it gives a voltage that starts to drop off. The 0 resistors still come up as 0 when tested. The caps all look great, no puffiness or leakage, then I tested the transistors with the diode setting.

     

    I'm not precisely sure which end is E and C on these :P ;

    1st transistor

    + on base/- on E = 729

    + on base/- on C = 731

    - on base/+ on E = 772

    - on base/+ on C = 1/OL

     

    2nd transistor

    + on base/- on E = 731

    + on base/- on C = 1/OL

    - on base/+ on E = 751

    - on base/+ on C = 770


  4. The cap right next to the speaker isn't giving a reading. The display just shows 1 on the left hand side. Then the 2 resistors behind the power input are reading 001, 001, and the one in front of the ribbon is 004. All the joints look good and nothing seems loose. I'm not sure how to test the speaker exactly.


  5. Used to have one that ended up disappearing. Snagged a non working one off eBay and figured it would be a quick solder job. Not the case, as everything on the board and membrane looks fine. I can't find any type of schematic or technical info for it. I took the multi meter to it and there's 4 parts that I'm wondering about. There's 2 resistors behind the power jack that reads 001, resistor in front of these ribbon reads 004 and the cap next to the speaker just has a 1 that's towards the left side of the display. Any assistance is always appreciated.

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    post-47137-0-07136900-1535988523_thumb.jpg

    post-47137-0-71905000-1535988728_thumb.jpg


  6. in my case I would make the replacement of the flash memory of the super everdrive china board, after this procedure I need to write the OS and the firmware in the new flash memory would I have to use the OS and the fimware Jack Diy to be compatible with board?

    Pop the SD in a computer and in the SPED folder there should be an OS.bin file. Move that out and drag and drop the v11 or 12 in and try. If that doesn't work, you may have to hunt down Jack DIY and try to get that OS.

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