Recent content by RetroHacker

  1. TRIAD - CRT - SCHEMATICS - INFO - HELP

    Here's the schematic of the Wyse 50 - this *should* be the same or at least very similar: http://bitsavers.org/pdf/wyse/WY-50/Wyse_WY-50_Terminal_Mainenance_198601.pdf Schematics of the monitor section start on page 215. The most common failure point in these, from all the ones I've fixed, is...
  2. TRIAD - CRT - SCHEMATICS - INFO - HELP

    It's a rebadged/modified Wyse, very possibly based on a Wyse 85, based on the layout of the ports, but being for a third party, it could have a modified or different logic board, or modified ROMs. Will be very similar to the ubiquitous Wyse 50. Should not be terribly hard to repair - most Wyse...
  3. Just Saw Wreck-It Ralph

    Saw it on opening night. I was very surprised that there weren't more people there, the theater only had something like 30 people in it. Although I did go to the 10:30 showing, probably a bit late for a "kids" movie. Very good movie - really a lot of fun. Went with a couple of other video game...
  4. Anyone Seen Retrohacker Around?

    Hrm. And people wonder why I don't come to the forums very often... It's a minicomputer. It's what an office would use in the 80's - everyone had a terminal (like the one sitting on top) on their desk, and they'd all share the one computer. The computer is capable of serving dozens of these...
  5. Anyone Seen Retrohacker Around?

    I'm not quite dead yet! I'm sorry guys - life has been quite a bit overwhelming for me as of late... I'm alive, doing my usual go to work, come home, rinse, lather, repeat. Just haven't been doing much in the way of video games, and I haven't been on the forums either. A whole lot of real world...
  6. No picture wired click

    Desolder it and remove it. Since you've got a short, you never had any HV in the first place, so there will be nothing to discharge. But, you should always get in the habit of discharging before disconnecting the anode lead, even if you know you don't have to. If you don't, sooner or later...
  7. Basic monitor information - how to ask good questions. Read this first

    The metal ring is supposed to kind of help hold the clip/hook into the suction cup itself. The suction cup sticks to the tube with suction, and being pulled against the tube a bit by the clips. It's simply a protective boot to cover what would be a very dangerous exposed HV connection, and keeps...
  8. Did I Just Buy a Cool Paperweight?

    The die in any of those chips is right in the center, so the plastic package is mostly "legs". It's possible to grind away the edge of the chip package to get at the conductors further inside, and solder wires to it. You need a steady hand, a little bitty dremel bit and a lot of patience, but it...
  9. Did I Just Buy a Cool Paperweight?

    I don't know how good of a paperweight that would be - I mean, it's kinda pointy, and a bit too big. Might I suggest something a bit smaller, like an ARII? ;) Post a good picture of the damage. It *is* possible to repair broken legs on chips. Or, you can replace it, depending on what kind of...
  10. Best (e)eprom burner?

    Because the Needham's programmer I have (PB-10) is an 8 bit ISA card. I tried jamming it into a PCI-E slot but it just won't go ;) Huh? I don't know where you're coming from with that comment. Why do you think I'm doing that, and how? -Ian
  11. Best (e)eprom burner?

    No. Needham's software runs in DOS. On a computer. -Ian
  12. w/g 7500 screw up

    Don't worry about C616. But replace that cap you reversed. Use a new cap - the one you installed backwards is was destroyed by the reverse voltage. -Ian
  13. Best (e)eprom burner?

    Maybe. But it's been my experience that the older programmers are a lot more reliable. Not only that, they're usually cheaper. Add on top of it the wonderfully sucktastic software that drives most modern programmers, and the old ones come out way ahead. The Needham's software is about the best I...
  14. urgent coinmech question

    No. The coin switch is normally open, just like all the other switches in the game (joystick, buttons, etc). When the coin hits it, it closes the circuit, bringing it to ground. That registers a credit. Inputs on game boards are active low - that is, they're tied high through pullup resistors on...
  15. Burgertime Board Repair/Replace

    Not a whole lot of information to go on there... A description of the problem would help. -Ian
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