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Conference hydra::amiga_v1

Title:AMIGA NOTES
Notice:Join us in the *NEW* conference - HYDRA::AMIGA_V2
Moderator:HYDRA::MOORE
Created:Sat Apr 26 1986
Last Modified:Wed Feb 05 1992
Last Successful Update:Fri Jun 06 1997
Number of topics:5378
Total number of notes:38326

1617.0. "Serial port problem?" by NAC::GODDARD () Mon Aug 22 1988 14:18

    I've been dialing into work using my Amiga and scholar modem for
    some time now with no problems. The other night though I started
    the VT200 (smokey) emulator and got garbage when I typed ^B to get
    the modem 'READY' prompt. I checked the BAUD rate to make sure it
    was right...which it was (2400). I checked and reseated all appropriate
    cable connections and reset the modem (by powering it down and then
    on again). This din't correct the problem. I though maybe the disk
    VT200 was on when bad so I pulled out my backup copy but still
    got the same results. I finally pulled out the VT100 emulator and
    tryed it....with the same result. After much tinkering it seems
    as though some characters get echoed correctly and some don't.
    Does this sound like a serial port (8520) problem or something else?
    
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1617.1ANT::SMCAFEESteve McAfeeMon Aug 22 1988 14:416
    
    I'd try another modem or try the modem on another terminal/computer.
    I've got more confidence in my amiga than I do in my Scholar.  No
    offence intended towards Scholar designers out there :-).
        
    - steve
1617.2Power SupplyMTWAIN::MACDONALDWA1OMM 7.093/145.05/223.58 AX.25Mon Aug 22 1988 16:585
    The Scholar is prone to problems, particularly the power supply.
    Check your power supply. Its quite possible that its gone sour as
    is the case with most of them.
    
    Paul
1617.3STAR::BANKSIn Search of MediocrityMon Aug 22 1988 17:389
    I lost a scholar a week or so ago, with similar symptoms (or was
    that the Hayes?).  Of course, I lost a Hayes on the same day, so
    it's probably indicitive of something else.
    
    If you want to sanity check the Amiga, just shove something conductive
    between pins 2 and 3 on the rs-232 connector and see if the characters
    you type to the terminal emulator echo.  (Being in the same position,
    this quick test reassured me that it was only the modem that was
    bad.)
1617.4Check the telephone connectorsPUERTO::ALVAREZMiguel,from sunny Puerto RicoMon Aug 22 1988 18:547
    	I had a similar problem sometime ago, with the same setup as
    yours. I swapped cables, modems, 8250's, terminal emulators, etc..
    Somebody in this conference suggested checking the telephone plugs.
    
    	He was right on the target, I found a burned-out wire in the
    plug. It was very dificult to figure out, since voice communications
    worked perfectly. I replaced the wall connector and solved the problem.