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Thread: Flashing screen on HRP5-120

  1. #1
    Junior Member
    Join Date
    May 2019

    Flashing screen on HRP5-120

    I have a HRP5-120 whose screen flashes briefly. I can see Homeworks and what seems to be a bar moving from left to right on the bottom of the screen. Any suggestions on how I can troubleshoot this is appreciated.

    Thank you for looking.

  2. #2
    Senior Member
    Join Date
    Oct 2013
    Use a serial cable and connect to the processor. If you are able to connect, upload the program.

    If you are unable to connect, set DIP switch 1 to down (OS mode) and reboot. Upload the operating system (from terminal screen). Reset DIP#1 and reboot. You will need to upload the program again.

    If you are not able to connect in OS mode, it is dead.

    The Interactive and Illumination processors have a battery soldered on the system board. It had a 10 year life. Most of these units are well past that. You can get replacements but there is some special technique required for soldering LI batteries. You may have to search around for someone that can do it.
    LED, Incorporated
    Raleigh, NC 27614

  3. #3
    Junior Member
    Join Date
    Feb 2020
    were you able to resolve your issue? I seem to have the same issue

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