From shieldsm at gmail.com Tue Mar 20 00:06:39 2007 From: shieldsm at gmail.com (Mike Shields) Date: Tue, 20 Mar 2007 01:06:39 -0400 Subject: [sebhc] Reviving an H89 Message-ID: <13135db40703192206q7d83541cof461118801d78748@mail.gmail.com> A non-text attachment was scrubbed... Name: not available Type: multipart/alternative Size: 3033 bytes Desc: not available URL: From Watzman at neo.rr.com Tue Mar 20 07:08:46 2007 From: Watzman at neo.rr.com (Barry Watzman) Date: Tue, 20 Mar 2007 08:08:46 -0400 Subject: [sebhc] Reviving an H89 In-Reply-To: <13135db40703192206q7d83541cof461118801d78748@mail.gmail.com> Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- 0.00 HTML_MESSAGE BODY: HTML included in message Message-ID: <008b01c76ae8$836d3e00$6500a8c0@barry> Start with the power supply, obviously. If you have no fan, that has to be the problem. It's an old-fashioned analog supply, so should be easy to troubleshoot if you have the schematics. _____ From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of Mike Shields Sent: Tuesday, March 20, 2007 1:07 AM To: sebhc at sebhc.org Subject: [sebhc] Reviving an H89 Hello everyone, A brief introduction - I'm probably a little younger than most of the group, but I started my career as a programmer (at 4 years old in BASIC) on the H89 that my father assembled. I grew up reading REMark and Sextant and helped to build and upgrade an H-150 along the way. Well, I recently took possession of the H89, did a quick interior dusting and exterior cleaning, and attempted to power it on. But, powering it on does nothing. No fan, no clicks, no smoke, nothing at all. The fuse is fine. I did a quick visual inspection of the power supply (without removing anything) but didn't see anything amiss, and there's no scent of smoke. I was the last one to use the machine, but I don't remember having any problems with it. (Although, that was 15-20 years ago, memory isn't perfect) Just looking for suggestions as to common failure modes that would result in stone-dead behavior. I have some spare H89 parts that I'd like to upgrade it with, but I've got to get it firing up first - I've got meters, scopes, and experience with them, so any suggestions at all are welcome. I do have the schematics and manuals for it, so pointers to those are fine too. Thanks, and long live Heath! Mike Shields -------------- next part -------------- An HTML attachment was scrubbed... URL: From carrollwaddell at sc.rr.com Tue Mar 20 09:48:11 2007 From: carrollwaddell at sc.rr.com (Carroll Waddell) Date: Tue, 20 Mar 2007 09:48:11 -0500 Subject: [sebhc] Reviving an H89 In-Reply-To: <13135db40703192206q7d83541cof461118801d78748@mail.gmail.com> References: <13135db40703192206q7d83541cof461118801d78748@mail.gmail.com> Message-ID: <45FFF42B.9050506@sc.rr.com> Mike Shields wrote: > Hello everyone, > > A brief introduction - I'm probably a little younger than most of the > group, but I started my career as a programmer (at 4 years old in > BASIC) on the H89 that my father assembled. I grew up reading REMark > and Sextant and helped to build and upgrade an H-150 along the way. > > Well, I recently took possession of the H89, did a quick interior > dusting and exterior cleaning, and attempted to power it on. But, > powering it on does nothing. No fan, no clicks, no smoke, nothing at > all. The fuse is fine. I did a quick visual inspection of the power > supply (without removing anything) but didn't see anything amiss, and > there's no scent of smoke. I was the last one to use the machine, but > I don't remember having any problems with it. (Although, that was > 15-20 years ago, memory isn't perfect) > > Just looking for suggestions as to common failure modes that would > result in stone-dead behavior. I have some spare H89 parts that I'd > like to upgrade it with, but I've got to get it firing up first - I've > got meters, scopes, and experience with them, so any suggestions at > all are welcome. I do have the schematics and manuals for it, so > pointers to those are fine too. > > Thanks, and long live Heath! > > Mike Shields Check the power switch. I've seen several of that type of switch go bad. Carroll -- Delivered by the SEBHC Mailing List From billwilkinson at mindspring.com Tue Mar 20 08:50:31 2007 From: billwilkinson at mindspring.com (William Wilkinson) Date: Tue, 20 Mar 2007 08:50:31 -0500 Subject: [sebhc] Reviving an H89 Message-ID: <380-220073220135031859@mindspring.com> A non-text attachment was scrubbed... Name: not available Type: multipart/alternative Size: 7780 bytes Desc: not available URL: From peter59 at sbcglobal.net Tue Mar 20 10:36:53 2007 From: peter59 at sbcglobal.net (Peter Shkabara) Date: Tue, 20 Mar 2007 08:36:53 -0700 Subject: [sebhc] Reviving an H89 In-Reply-To: <13135db40703192206q7d83541cof461118801d78748@mail.gmail.com> Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- 0.28 MAILTO_TO_SPAM_ADDR URI: Includes a link to a likely spammer email 0.00 HTML_MESSAGE BODY: HTML included in message References: <13135db40703192206q7d83541cof461118801d78748@mail.gmail.com> Message-ID: <005301c76b05$9652dd50$0d0014ac@voshod> Hi Mike, As has already been suggested, check the power switch. Actually, any such troubleshooting would involve checking for power starting from the power cord. Also, a common failure mode on the H89 was the Molex connectors. You may want to disconnect and clean each of them just for preventative maintenance. Good luck. Peter ---------------------------------- peter59 at sbcglobal.net _____ A brief introduction - I'm probably a little younger than most of the group, but I started my career as a programmer (at 4 years old in BASIC) on the H89 that my father assembled. I grew up reading REMark and Sextant and helped to build and upgrade an H-150 along the way. Well, I recently took possession of the H89, did a quick interior dusting and exterior cleaning, and attempted to power it on. But, powering it on does nothing. No fan, no clicks, no smoke, nothing at all. The fuse is fine. I did a quick visual inspection of the power supply (without removing anything) but didn't see anything amiss, and there's no scent of smoke. I was the last one to use the machine, but I don't remember having any problems with it. (Although, that was 15-20 years ago, memory isn't perfect) Mike Shields -------------- next part -------------- An HTML attachment was scrubbed... URL: From shieldsm at gmail.com Tue Mar 20 17:27:30 2007 From: shieldsm at gmail.com (Mike Shields) Date: Tue, 20 Mar 2007 18:27:30 -0400 Subject: [sebhc] Reviving an H89 In-Reply-To: <005301c76b05$9652dd50$0d0014ac@voshod> References: <13135db40703192206q7d83541cof461118801d78748@mail.gmail.com> <005301c76b05$9652dd50$0d0014ac@voshod> Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- 0.28 MAILTO_TO_SPAM_ADDR URI: Includes a link to a likely spammer email 0.00 HTML_MESSAGE BODY: HTML included in message Message-ID: <13135db40703201527l470ba99r737f586f56a4dd4@mail.gmail.com> Good news - it was just the switch. Cleaned it out a bit then worked it back and forth till it sounded snappy, and it's all good to go. Thanks for everyone's suggestions. Now I've got a 16k ram upgrade (to take it up to 64k) and a serial I/O board to install. The serial I/O is more important, I'll probably tackle that first. I'm sure I'll be back to bug the list again! On 3/20/07, Peter Shkabara wrote: > > Hi Mike, > > As has already been suggested, check the power switch. Actually, any such > troubleshooting would involve checking for power starting from the power > cord. Also, a common failure mode on the H89 was the Molex connectors. You > may want to disconnect and clean each of them just for preventative > maintenance. Good luck. > > Peter > ---------------------------------- > peter59 at sbcglobal.net > > ------------------------------ > A brief introduction - I'm probably a little younger than most of the > group, but I started my career as a programmer (at 4 years old in BASIC) on > the H89 that my father assembled. I grew up reading REMark and Sextant and > helped to build and upgrade an H-150 along the way. > > Well, I recently took possession of the H89, did a quick interior dusting > and exterior cleaning, and attempted to power it on. But, powering it on > does nothing. No fan, no clicks, no smoke, nothing at all. The fuse is fine. > I did a quick visual inspection of the power supply (without removing > anything) but didn't see anything amiss, and there's no scent of smoke. I > was the last one to use the machine, but I don't remember having any > problems with it. (Although, that was 15-20 years ago, memory isn't perfect) > > > Mike Shields > -------------- next part -------------- An HTML attachment was scrubbed... URL: From geneb at deltasoft.com Tue Mar 20 17:47:18 2007 From: geneb at deltasoft.com (Gene Buckle) Date: Tue, 20 Mar 2007 14:47:18 -0800 (PST) Subject: [sebhc] Reviving an H89 In-Reply-To: <13135db40703201527l470ba99r737f586f56a4dd4@mail.gmail.com> Message-ID: > Now I've got a 16k ram upgrade (to take it up to 64k) and a serial I/O board > to install. The serial I/O is more important, I'll probably tackle that > first. I'm sure I'll be back to bug the list again! > Mike, you should still take the time to clean and re-seat all the molex connectors. g. -- "I'm not crazy, I'm plausibly off-nominal!" Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. -- Delivered by the SEBHC Mailing List From carrollwaddell at sc.rr.com Sat Mar 24 20:27:28 2007 From: carrollwaddell at sc.rr.com (Carroll Waddell) Date: Sat, 24 Mar 2007 20:27:28 -0500 Subject: [sebhc] 8K Memory chips Message-ID: <4605D000.7030307@sc.rr.com> I saw some 2147 memory chips on ebay. These chips work fine in the Heathkit 8K memory card in place of the 4044. Only difference is the 2147 has much faster access time. I have some 8K memory boards running with these chips and also mixed with the 4044. Carroll -- Delivered by the SEBHC Mailing List From carrollwaddell at sc.rr.com Thu Mar 29 10:11:46 2007 From: carrollwaddell at sc.rr.com (Carroll Waddell) Date: Thu, 29 Mar 2007 10:11:46 -0500 Subject: [sebhc] H8-4 Test Message-ID: <460BD732.8040406@sc.rr.com> Does anyone know of a diagnostic or some test program to test the H8-4 serial card? Carroll -- Delivered by the SEBHC Mailing List