Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!apple!gem.mps.ohio-state.edu!ginosko!uunet!hodge!jdm From: jdm@hodge.UUCP (jdm) Newsgroups: comp.dcom.modems Subject: Re: Practical Peripherals (was Re: low priced modems) Summary: PP2400SA modems do get hot Message-ID: <21843@hodge.UUCP> Date: 14 Sep 89 16:59:17 GMT References: <434@tron.UUCP> <9411@chinet.chi.il.us> <984@urbana.mcd.mot.com> Distribution: comp Organization: Hodge Computer Research Corporation Lines: 41 In article , pel@unhd.UUCP (Paul E. Leclerc) writes: > I do think it gets hotter than I want it to but... > I've been using PP2400SA modems since they came out and they do get quite hot if you've got them wedged in a small space, piled under books, papers, and equipment, or resting on carpet. Most of the problems people have come to me about the PP2400SA were because of erratic operation resulting from excessive heat build up. I just tell them to switch the modem off for an hour or stick it in their freezer for 10-15 minutes. That always clears it up. If you have an older PP2400SA then it's possible you need a zener diode shorted. It seems when the modem was orginally in the prototyping stage an engineer added a zener diode between some point and ground as a test. This was accidentally left in the orginal design (there should have a grond connection, but without the zener diode). The fix is to solder a wire across the diode to "short" it out. Contact PP tech support for more on this. Also, and I can't emphasize this too strongly, get the latest ROM upgrade from PP. Since the PP2400SA has a five-year warrenty, and the modem has been out for less than 5 years, all PP modes are still under warrenty. This means ROM upgrades are free. The current ROM version is 1.09, I believe. Each new version clears up a few bugs and adds a few new features. I don't have a list of the changes made in each revision, however. Didja hear that Hayes just bought PP? They musta been doin' sumptin' right. -- "I'm an anthropologist, not a computer systems architect, damit!" jdm@hodge.cts.com [uunet zardoz crash]!hodge!jdm James D. Murray, Ethnounixologist TEL: (714) 998-7750 Ext. 129 Hodge Computer Research Corporation FAX: (714) 921-8038 1588 North Batavia Street Orange, California 92667 USA