1. You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
    Dismiss Notice

Magnum 257HP loses memory

Discussion in 'CB and Export Equipment and Accessories' started by Turbo T, Jun 10, 2013.

  1. Turbo T

    Turbo T Certified CB Rambo

    Joined:
    Feb 2, 2011
    Messages:
    940
    Likes Received:
    102
    I recently started having problems with my Magnum 257HP. It's currently set up for CON 3. However today I noticed when you switch the radio off at the on/off knob, it goes back to the default of 29.300 FM.

    I did a search to see if there's a back up memory battery that needs replaced (similar to the RCI 2950's) but didn't see anything. Can anyone please let me know why this all the sudden has started and what can be done to fix it? The radio is only a year and a half old.

    Thanks in advance.


     

  2. 9C1Driver

    9C1Driver Sr. Member

    Joined:
    Aug 13, 2008
    Messages:
    3,189
    Likes Received:
    911
    A battery backup would be for a much older version, I doubt ANY of the HP version 257's have an old school battery back-up.
     
  3. dd18

    dd18 Davo

    Joined:
    Dec 30, 2008
    Messages:
    245
    Likes Received:
    19
    change the jumper to position 2 and see what happens.
     
  4. 9C1Driver

    9C1Driver Sr. Member

    Joined:
    Aug 13, 2008
    Messages:
    3,189
    Likes Received:
    911
    Yea that or you might try a CPU master re-set. If it still acts strange could be the capacitor that keeps the memory charged went bad or the CPU itself could be going bad.
     
  5. Turbo T

    Turbo T Certified CB Rambo

    Joined:
    Feb 2, 2011
    Messages:
    940
    Likes Received:
    102
    It does the same thing.

    Where would the memory cap be located within the radio?

    Thanks in advance
     
  6. dd18

    dd18 Davo

    Joined:
    Dec 30, 2008
    Messages:
    245
    Likes Received:
    19
    Can you get it on to 11m OK from the front panel...function and hold call for a couple of secs I think..?
    Hopefully the master reset will cure it.
    Which is....???
     
  7. sonoma

    sonoma Sr. Member

    Joined:
    Sep 14, 2005
    Messages:
    2,072
    Likes Received:
    847
    you can call magnum tech support and they will help you out on this problem. here is the tech number.

    1-877-624-6869
     
    1 person likes this.
  8. Turbo T

    Turbo T Certified CB Rambo

    Joined:
    Feb 2, 2011
    Messages:
    940
    Likes Received:
    102
    Update: reset the CPU. Same problem exists
     
  9. 9C1Driver

    9C1Driver Sr. Member

    Joined:
    Aug 13, 2008
    Messages:
    3,189
    Likes Received:
    911
    The function and call procedure should not apply to the new 257HP, they now have a jumper that plugs into Con 1,2,3, or 4 for the conversion process.
     
  10. Turbo T

    Turbo T Certified CB Rambo

    Joined:
    Feb 2, 2011
    Messages:
    940
    Likes Received:
    102
    Thought I'd give an update on this. So I found this radio acts just like it was on CON 2 when it's on CON 3 and I've tried resetting the radio.

    So in other words I can turn it to 28.400 USB or whatever, push the select knob, hold #2 button and get to CB. Turn it off at the knob and quickly turn it back on and we're back to square 1 again...at least it says on 28.400 USB and not the default of 29.300 FM...
     
  11. dd18

    dd18 Davo

    Joined:
    Dec 30, 2008
    Messages:
    245
    Likes Received:
    19
    Sure you don't have them mixed up?
     
  12. Turbo T

    Turbo T Certified CB Rambo

    Joined:
    Feb 2, 2011
    Messages:
    940
    Likes Received:
    102
    Yes I am sure. I am the one who did the work, and never had to push the function button and then #2 to go from 10 meters to CB.....until now.
     

Share This Page

  • About Us

    The WorldwideDX Radio Forum was originally established in 2001. We pride ourselves on welcoming Radio Hobby enthusiasts of all types, while offering unbiased, informative, and friendly discussion among the members. We are working every day to make sure our community is the best Radio Hobbyist's site.
  • Like us on Facebook

  • Premium VIP Member

    The management works very hard to make sure the community is running the best software, best designs, and all the other bells and whistles. Care to buy us a beer? We'd really appreciate it!

    Donate to us!