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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 11:18

    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?

T.R	Title	User	Personal Name	Date	Lines
1617.1		ANT::SMCAFEE	Steve McAfee	`Mon Aug 22 1988 11:41`	6
	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
1617.2	Power Supply	MTWAIN::MACDONALD	WA1OMM 7.093/145.05/223.58 AX.25	`Mon Aug 22 1988 13:58`	5
	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
1617.3		STAR::BANKS	In Search of Mediocrity	`Mon Aug 22 1988 14:38`	9
	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.)
1617.4	Check the telephone connectors	PUERTO::ALVAREZ	Miguel,from sunny Puerto Rico	`Mon Aug 22 1988 15:54`	7
	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.