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7800fan

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Posts posted by 7800fan

  1. Posted

    "Hi there. Just a friendly reminder - the auction will be relisted if payment is not received within three days. Thanks!"

     

     

    (2 days later.....)

     

     

    "Hi again. A friendly reminder - the auction will be relisted tomorrow if payment is not received. Thanks!"

     

    snipped

     

    Just a friendly reminder, until UID is completed a buyer can still pay for it as much as 6 days after end of listing (2 days before UID can open and 4 more days) if you sold item via BIN and the later buyer then pays up, you would have 2 buyers and one item, and can risk a neg from one.

     

    All sellers should avoid relisting until after UID is completed.

  2. Posted

    I did buy a Sega Power Sports trackball last year that's ripe for modding. The thing is about useless in it's current form and only supported by three SMS games. I tried out that football game on my Genesis Everdrive which was bloody awful, spin the trackball like crazy and my character barely moved he was so slow. I didn't even bother trying the other ones. I bought it on Amazon for cheap after reading a rumor online that it could be made to work with Marble Madness for Genesis. I tried both the EA and Tengen versions to no avail. Neither game responded except with the switch in Joystick mode.

     

     

    Sportspad controller in joystick mode works great on Atari games, once I got obscenely high score in Reactor from just one life. The controller in trackball mode only worked with SMS games and weren't supported beyond that, it is not surprising the controller didn't work well on Genesis games.

  4. Posted

    Why stop at LCD? How about LED? I have seen 16x16 LED matrix that comes very close to the size of original LCD. I don't know if there's available supply of these 16x16 LED matrix but if it's still in production or there's huge surplus then maybe try that? The only drawback is it'd draw more power and the battery won't last as long as with backlit LCD and microcontroller to convert old Microvision display signal to modern LCD.

  5. Posted

    <GRAVEDIGGING>

    wLJwGAZ.jpg

     

    I have most of the parts and only needed to order diode (the ones I have are huge 5A variety and not for this project) and the analog switch chip plus the case and keypad. The enclosure has number pad and buttons mounted. I made a boo-boo with the original file I sent for PCB, I used the silkscreen for female 9 pin connector, not male! This is why the male connector is upside down in the picture, it's the only way to make it work correctly.

     

    Yes it does look like the variable resistor is backward but fortunately the pinout are reversible (center pin is tap) anyway so it's fine as it is. It would have mattered only if I was going to make a hole in the case for regular re-adjustment but I doubt it's needed at all.

     

    The chip already arrived. I still need the diodes (estimated date of delivery June 10-22, tracking shows it hadn't left Mouser warehouse) and to connect the 5200 connector end. Fixed the file for that 9 pin connector, and I am planning to send it in for another run. I may change the 2x8 pin connector to use actual 15 pin socket instead, the ribbon cable to db15 connector are pretty scare since cheap stand alone sound card with separate gameport / MIDI port connector aren't common as they were 15 years ago.

  6. Posted

    eeo003 has her 5200 power supply relisted as for part or not working. This generally makes return harder but if someone buys that and gets a different one, eBay money back should still apply for not matching picture and description.

  13. Posted

    Theoretically you could replace the transformer and the power supply PCB with something modern. Laptop power supplies are common and some are good quality. Get one, say around 19v DC, rig up a 16v DC-DC converter, 12v DC-DC converter, 5v DC-DC converter, and a negative 3.3v somehow. (why does Intellivision needs negative 3.3v anyway?)

  14. Posted

    eBay is at fault for launch edition fiasco. They have added launch edition keyword to every single fucking consoles. 6 switch heavy is the only true "launch edition", all other 2600 are redesigned and reissued. Mini SNES? Launch Edition! Majesco Game Gear that doesn't work with TV tuner and a few SMS games? Launch Edition! Atari 5200 with 2 ports and won't work with 3 games? Launch Edition!!!

     

    Seller did not add these, they are auto added by eBay. Seller needs to be aware and manually delete it from title when making a listing.

    • Like 1

  16. Posted

    Pin 7 and 8 on controller port are for power and ground. If you have a meter, check for short between that 2 pins.

     

    Also carefully open up phazer and see if there are broken or loose wire somewhere. If it looks fine and isn't shorted, do you have another SMS to test with or another phazer to test on your SMS. This would help rule out which one is causing the shut down issue.

  19. Posted

    It's so tiny. I wish they'd put these in smaller enclosures, since they obviously can.

     

    If it's small enough, how about stuffing the gut inside a NES cart? NES cart is big enough on its own it could house smaller game consoles. You would need to relocate the Famicom connector to the cart end.

    • Like 1

  21. Posted

    There's also that SCSI CD adapter to make your Duo a stand alone CD-ROM but it was never released. AFAIK the price of a regular 2x SCSI CD-ROM was cheaper than a Duo and not many people are going to set up a Duo next to a Macintosh since back then Macintosh used non-VGA standard display and you would need a separate display to run Duo. Seemed like a strange idea if they did release it so thankfully it was never released.

  25. Posted

    Durable connector was the weak point of a few consoles. Texas Instrument TI-99 series with horizontal cart loading put stress on the connector and I've seen a few with broken solder joints or even cracked PCBs. 8-bit NES also had an issue, due to the ZIF design the contact were prone to failing from oxidation without any scraping from cart PCB rubbing on connector. Also leaving cart (especially Game Genie) inside for long can flex the contact out of place.

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