test-drb July 1998

test-drb@ccmp.vtda.org

154 participants
898 discussions

by dastar＠ncal.verio.com

I got this spam and thought it was the funniest thing in the world. Please note that there is ABSOLUTELY NO RELATION to the Computer History Association of California (http://www.chac.ORG). This is just a funny coincidence that Kip Crosby warned about. ---------- Forwarded message ---------- Date: Tue, 5 Jul 1998 22:41:23 +1000 From: "H. McDonald" <hamish(a)hanmail.net> To: Mark Robinson <navail(a)universen.com> Subject: Re: your support You might like to support the hottest adult entertainment site on the net! You'll be glad you did! http://www.chac.com For the best in live phone sex, call these amature girls. These girls are all amature SanMarino residents, answering your calls many are young students working partime give them a call! <remainder expunged>

25 years, 10 months

Xpost -Cromenco program meeded

by rhblake＠bbtel.com

this is a cross post, if you can help him, please contact the person below: -------------------------------------------------------------------------------- Jeff Barr <jeff(a)vertexdev.com> Redmond, WA USA - Saturday, July 04, 1998 at 21:47:31 Does anyone have the Kaleidoscope program (ca. 1977) for the Cromemco Dazzler, in source or object code form? (A long shot, I know). -------------------------------------------------------------------- Russ Blakeman RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144 Phone: (502) 756-1749 Data/Fax:(502) 756-6991 Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com Website: http://members.tripod.com/~RHBLAKE/ ICQ UIN #1714857 AOL Instant Messenger "RHBLAKEMAN" * Parts/Service/Upgrades and more for MOST Computers* --------------------------------------------------------------------

25 years, 10 months

Dead PSU

by maxeskin＠hotmail.com

I counted with a stopwatch. It beat very fast, so it might be even higher than 120Hz, but it certainly is much higher than 60. I don't know if they'll actually let me do this repair anyway. >I think we need to determine if it really is a 120Hz ripple, or something >near it. If it really is 2* mains frequency, then start looking around >the mains smoothing capacitors first. > It's a very simple PSU, there's a bunch of capacitors, a single small chip, and a couple of every other component and that's it. This does not have the power-on from the keyboard thing. It uses a regular button which cuts mains off from the rest of the PSU. Two questions: what is the definiton of a Switch Mode PSU, and what is a Crowbar? >> >> Don't worry about the complex circuit with thround resistors and >> little capacitors, it's working becasuse of that fluttering fan and >> it did power up when you commanded it to turn on by the keyboard. > >Agreed. This doesn't sound like a control circuit problem (although, >having seen some strange SMPSUs in my time I'd not bet my life on it!. A >few, a very few SMPSUs have a separate linear supply for the control >circuit that can inject mains frequency ripple). > > >> >> Jason D. > >-tony > > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

25 years, 10 months

looking for HP-11C...

by allisonp＠world.std.com

HI, I have a friend that is looking for an operational HP-11C, it must be the C (engineering model) model. Or if you know a suitable substuitute (must be RPN) please email me off list. Allison

25 years, 10 months

Intellec Series II Microcomputer Development System

by dastar＠ncal.verio.com

Well, I finally got to check out the Intel Development System (ISIS?) I got from Las Vegas. On first glance it looks like it had been exposed to the elements. All of the documentation was warped, had water stains, and most of the reference cards were stuck together. I was able to separate most of them without totally damaging the covers, so most of the information on them is still in tact, but some are just plum stuck. What was the method for separating water damaged pages again? Run it through a steamer at a certain humidity or something? Anyway, the main computer unit itself looks OK on the outside, but I couldn't pull any of the multi-bus cards out. They seemed extremely stuck. Its official model number is MDX 225A. The main unit incorporates the CRT, an 8-inch drive mouted vertically next to the CRT, and a 6-slot card cage mounted horizontally underneath the CRT. It has an external keyboard. I also got an MDX 761A1 hard drive sub-system which looks like it will need extensive restoration as it shows most evidence of exposure to moisture. I don't know if it will ever work again or if I'll ever get any data off the 8-inch hard drive but I'll eventually find out. Also included was a Universal Programmer (model IUP 201) with modules for just about every Intel microcontroller and EPROM and whatnot of the day. It was in fine shape. I also received a large grocery bag filled with 8-inch floppies with the system software circa 1981-82. Overall a nice system but it will require some moderate restoration. Sam Alternate e-mail: dastar(a)siconic.com ------------------------------------------------------------------------------- Ever onward. September 26 & 27...Vintage Computer Festival 2 See http://www.siconic.com/vcf for details! [Last web page update: 06/11/98]

25 years, 10 months

The Beatles

by mallison＠konnections.com

Packard Bell had a reputation for making computers with pulled and otherwise used parts. They had a seemingly high failure rate. However, recently NEC bought out Packard Bell and the quality and support improved drastically. I, who would never buy one, bought one for my wife's CAD business. That's what I'm using at the time. No Complaints... Mike ---------- From: Jeff Kaneko Sent: Friday, June 26, 1998 8:50 AM To: Discussion re-collecting of classic computers Subject: Re: The Beatles > > I just found a discarded Packard Bell 486 (I almost left it because the > > case looked like a 286's). I don't know why you all dislike those things > > so much, this case is very good. Anyway, when the machine boots, the ROM > > displays a "Packard Bell" graphic, complete with a 3-second fade-in (if > > only people paid so much attention to _useful_ stuff). Underneath, it > > displays, "America grew up listening to us. It still does." Now, this is > > my question. What does this mean? When was this company founded, and > > what was their original product? > > Packard-Bell, as you see it, is simply not the company it used to be. As > with so many American company names, someone bought the name. <Some Defence-Related stuff PB did in the 1950's SNIPed> > I have no idea what happened to Packard-Bell. They may still be around, > doing defense work, or they may have been swallowed up. The Packard-Bells > at CompUSA, however, are simply not related. The way I seen it, P-B may have been a defence contractor during WWII and later, but their main claim to fame was that for decades, they were one of the biggest manufacturers of Broadcast radios, and Television Sets. I know for a fact they were making TV's (of the humongous console variety in vogue at the time) in the early 70's because I remember an inane TV commercial for it. In the 50's and 60's there were some other major players that manufactured TV's (they actually *made* the stuff): Admiral (my grandmother had one), Motorola, GE, RCA and Zenith. Others were: Pilot, Curtis-Mathes (still around, I think), Hofmann, Westinghouse and a whole bunch of other minor players. Then the Japanese arrived (en force) in the mid 70's, and the next thing we knew thousands of americans were out of work, and no Televisions (or Computer monitors, for that matter) were made domestically. Packard-Bell was one of these victims. I don't know who is behind the resurrection of the P-B brandname. I suspect they wanted to appeal to baby-boomers who fondly remember watching 'Hopalong', 'Cisco' or 'Bonanza' on their parents' Packard Bell console TV. Jeff > > By the way, Packard-Bell has nothing to do with HP. > > William Donzelli > william(a)ans.net > > > > +------------------------------------------------------------------+ |Disclaimer: | | | | These opinions are entirely my own, and in no way reflect the | | policies or opinions of my employer. | | | +------------------------------------------------------------------+

25 years, 10 months

Dead PSU

by maxeskin＠hotmail.com

So how do I know which ones to replace? There are two fairly large cans, about a dozen smaller ones, and several mica caps. >First suggestion : Dried up capacitors. If you have an ESR meter (and I >don't either...) then test all the electrolytics in the unit. Replace any >that are defective. If you don't have an ESR meter, then you might try >replacing them anyway. > >-tony > > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

25 years, 10 months

Dead PSU

by ddameron＠earthlink.net

At 08:23 AM 7/4/98 PDT, you wrote: >This is not quite on topic. I want to know if it's practical to repair a >Mac Quadra's PSU. The problem is that it runs fine, when not plugged >into anything. When some given amount of stuff is connected (just the >motherboard does it), the fan starts oscillationg back and forth. When I >plug in speakers they make a beating sound. I counted it to be about 120 >HZ. This seems to me like a single component, possibly a diode. >Suggestions? > Is it a switching PSU? I would guess so. Many do not regulate well under no load, as there is a minimum current and switching on time required. It may be also that a main high-voltage filter capacitor is bad, feeding more raw AC into the switching stage. The 120Hz points to this. Under light loads, the output low voltage filter capacitors are enough. Under heavier loads, the line AC ripple is seen in the outputs which now cannot hold the voltages. Use caution on the high voltage side. -Dave

25 years, 10 months

Please help identify this S-100 computer

by altair8800＠hotmail.com

I recently acquired this S-100 computer. It says "Micropolis" on one of the PC cards and on a nameplate on the front of the floppy drive. It carries a tag inside which says the manufacturer is INTEGRAND - Visalia, CA. and the model is 800D-4E. Can anyone please tell me more about it? Here is a link to photos I have uploaded... http://home.att.net/~rwood54741/Computer.jpg Thanks, Bob ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

25 years, 10 months

Please help identify this S-100 computer

by allisonp＠world.std.com

<> says the manufacturer is INTEGRAND - Visalia, CA. <> and the model is 800D-4E. Intergrand made boxes only. They made some of the best s100 crate in the industry. Rugged, well cooled and well thought out. Allison

25 years, 10 months

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test-drb July 1998