dleigh@hplabsz.HPL.HP.COM (Darren Leigh) (06/10/88)
In article <620009@otter.hple.hp.com> ljc@otter.hple.hp.com (Lee Carter) writes: >Small but very annoying problem I have with my Amiga. >One of the first things I did when I got my machine home was to plug the >audio output into my stereo. When I did I was greeted with a loud hum from >the speakers. I had a similar problem when I attached my modem: the Amiga audio outputs would squeal (not hum) in a very annoying fashion. It turned out that I was using a fully wired serial cable and clipping the unneeded conductors cured the problem. Having the Amiga hooked up to a stereo is great! You wouldn't believe how the sound effects in Asteriods really enhance the game. Darren Leigh -- now hacking at Hewlett Packard dleigh@hplabs.hp.com hplabs!dleigh
hal@hpscdc.HP.COM (Hal Work) (06/10/88)
I also have, and am still having this problem. I have two small Sony powered speakers attached to my 500 and get an intermittent hum. Sometimes it's there, sometimes not. I'd love to find out how to stop it.
grr@cbmvax.UUCP (George Robbins) (06/11/88)
In article <4580005@hpscdc.HP.COM> hal@hpscdc.HP.COM (Hal Work) writes: > I also have, and am still having this problem. I have two small Sony > powered speakers attached to my 500 and get an intermittent hum. Sometimes > it's there, sometimes not. I'd love to find out how to stop it. As the other person suggested, check your RS232 cable for connections to pins 11 and 18. Snip any such wires. Of for more the most effective truncation, remove R339 and C502. Any remaining noise represents either grounding problems or power supply / ground noise within the system you can't easily defeat. The audio connections on the RS232 connector were a gesture towards A1000 compatibility - support for "answering machine" type applications. Oh well... -- George Robbins - now working for, uucp: {uunet|ihnp4|rutgers}!cbmvax!grr but no way officially representing arpa: cbmvax!grr@uunet.uu.net Commodore, Engineering Department fone: 215-431-9255 (only by moonlite)