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Recent content by mattg1974

  1. M

    Compaq Portable III power supply with 7.5 V instead of 5V

    Thanks for the advice. I shot some pictures of the fuse on board. I never seen a fuse like that but it's clearly marked with f2 and yes there is a f1 on the board too. Right besides the plug for the keyboard above the modem/extension Slot. Another picture is of the open PSU. Everything looks...
  2. M

    Compaq portable iii

    Maybe there is a Short on the motherboard or the drives? Did you already tried to turn it on without the drives connected. You can even unplug the power of the plasma screen. That plug is under the motherboard..
  3. M

    Compaq Portable III power supply with 7.5 V instead of 5V

    Hi, I am currently restoring and upgrading my portable III 286. The machine generally work's but while I added a gotek and wanted to measure some signals i slipped and shortened the 5V rail. That caused the portable to reset and blew one of the fuses on the motherboard. That was pretty stupid...
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