Re: IBM 5110 - Where does the character set live? And other questions.

OK, it's definitely the display board. The replacement board came Friday, I installed it today and all the characters are displaying correctly. The old board is now in the antistatic bag that the replacement came in. I say "old", but looking at the numbers following the part number (9522YG49 on

RE: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

> > A couple of years ago I bought the UK-branded equivalent of the Zhongdi ZD- > 915 desoldering station and I can quite honestly say it’s the best thing I’ve > bought for this hobby/obsession. To anyone struggling with solder wick and > manual pumps it’s worth far more in saved time than

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On 07/13/2017 11:26 PM, jim stephens via cctalk wrote: On 7/13/2017 6:52 PM, Jon Elson via cctalk wrote: On 07/13/2017 11:02 AM, jim stephens via cctalk wrote: On 7/13/2017 12:31 AM, Eric Smith via cctalk wrote: There are also vacuum desoldering stations that use "shop air" to derive the

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

> On 13 Jul 2017, at 22:46, Eric Smith via cctalk wrote: > > On Thu, Jul 13, 2017 at 10:42 AM, William Sudbrink via cctalk < > cctalk@classiccmp.org> wrote: > >> If you have the bucks, go for a Pace station with an SX-100 desoldering >> tool. 40 pin chips >> fall out

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On 7/13/2017 6:52 PM, Jon Elson via cctalk wrote: On 07/13/2017 11:02 AM, jim stephens via cctalk wrote: On 7/13/2017 12:31 AM, Eric Smith via cctalk wrote: There are also vacuum desoldering stations that use "shop air" to derive the vacuum, rather than having an internal pump. I've never

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On 07/13/2017 11:02 AM, jim stephens via cctalk wrote: On 7/13/2017 12:31 AM, Eric Smith via cctalk wrote: There are also vacuum desoldering stations that use "shop air" to derive the vacuum, rather than having an internal pump. I've never used them as I don't normally have an air compressor

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On 2017-07-13 9:26 PM, jim stephens via cctalk wrote: 14-in-1-Welding-Torch-Nozzle-Tip-Cleaner-Cutting-Reamer-Kit-For-Welder-Soldering/ http://www.ebay.com/itm/322411677190 The seller is showing the same sort of kit we used with the DS-100. However I don't know what it has to do with a

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On 7/13/2017 4:50 PM, William Sudbrink via cctalk wrote: That was my experience with Weller and Pace, they clogged way too fast and you had to wait for the glass to cool to clean them. There was a toolkit that Weller supplied with very high temp probes. They cleared the head. you only

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On 07/13/2017 03:32 PM, jim stephens via cctalk wrote: > There were off brand tips. made 100% of the difference. We got some of > the ones from non Weller sources and they were just not workable. These weren't--I'm still working on my grocery bag full-o-tips that I picked up for pennies on the

RE: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

> That was my experience with Weller and Pace, they clogged way too > fast and you had to wait for the glass to cool to clean them. That's part of the "beauty" of the SX-100 (90 and I think 80 as well), they have disposable cardboard traps. The 100 series tips have also been redesigned. I have

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On 7/13/17 10:22 AM, Chuck Guzis via cctalk wrote: > It was horrible--the tip would never stay tinned, the glass collector > and hose was always in the way (that glass gets *hot*) and the action > wasn't that good. That was my experience with Weller and Pace, they clogged way too fast and you

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

There were off brand tips. made 100% of the difference. We got some of the ones from non Weller sources and they were just not workable. Also your Soldapullit alternative worked in about 1 in 10 uses for me. I suspect the boards I had had different heat characteristics, and I'd usually end

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On Thu, Jul 13, 2017 at 10:42 AM, William Sudbrink via cctalk < cctalk@classiccmp.org> wrote: > If you have the bucks, go for a Pace station with an SX-100 desoldering > tool. 40 pin chips > fall out like they were never soldered in the first place. > That's my experience with the Hakko

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On Thu, 13 Jul 2017, Peter Cetinski wrote: On Jul 13, 2017, at 1:23 PM, Mike Loewen via cctalk wrote: I used a Pace rework station in the USAF, vacuum desoldering and hot air - very nice, but pricey. Wow, where were you stationed? In the late 1980s I was at

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

- Original Message - From: "Mike Loewen via cctalk" <cctalk@classiccmp.org> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk@classiccmp.org> Sent: Thursday, July 13, 2017 1:23 PM Subject: Re: Through-hole desoldering (was Re: IBM 5110 - Wh

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On Jul 13, 2017, at 1:23 PM, Mike Loewen via cctalk wrote: > > I used a Pace rework station in the USAF, vacuum desoldering and hot air - > very nice, but pricey. > Wow, where were you stationed? In the late 1980s I was at Beale AFB working on SR-71 cameras and we

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On Thu, 13 Jul 2017, systems_glitch via cctalk wrote: I've heard the Pace stations are *very* good. Never personally used one, they're above what I was willing to spend, even used! Thanks, Jonathan I used a Pace rework station in the USAF, vacuum desoldering and hot air - very nice, but

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On 07/13/2017 09:02 AM, jim stephens via cctalk wrote: > > > On 7/13/2017 12:31 AM, Eric Smith via cctalk wrote: >> There are also vacuum desoldering stations that use "shop air" to >> derive the vacuum, rather than having an internal pump. I've never >> used them as I don't normally have an air

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

I've heard the Pace stations are *very* good. Never personally used one, they're above what I was willing to spend, even used! Thanks, Jonathan On Thu, Jul 13, 2017 at 12:42 PM, William Sudbrink via cctalk < cctalk@classiccmp.org> wrote: > The 808 is nice, I have one. They come up used on ebay

RE: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

The 808 is nice, I have one. They come up used on ebay from time to time relatively cheap. But I've been spoiled now. If you have the bucks, go for a Pace station with an SX-100 desoldering tool. 40 pin chips fall out like they were never soldered in the first place. I removed five S-100

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

Watch out with using compressed gas duster (*not* canned air) on anything hot. It can decompose into pretty horrible compounds, among them (depending on duster type) phosgene gas and/or hydrogen fluoride. The current batch I've got is difluroethane and will decompose HF gas (which of course

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On 7/13/2017 12:31 AM, Eric Smith via cctalk wrote: There are also vacuum desoldering stations that use "shop air" to derive the vacuum, rather than having an internal pump. I've never used them as I don't normally have an air compressor anywhere near my electronics workbench. This works very

Re: IBM 5110 - Where does the character set live? And other questions.

On Thu, Jul 13, 2017 at 2:12 AM, Camiel Vanderhoeven via cctalk wrote: > Only the last bit to shift out of the register will have passed through > all flip-flops; numbering the flip-flops in such a way that the flip-flop > furthest away from the output is the first

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On Thu, Jul 13, 2017 at 2:31 AM, Eric Smith wrote: > 2) vacuum desoldering gun: lots of people liked the Hakko 808, but it's > discontiued. The Hakko FR-300 looks like a reasonable replacement, and sells > for around $310. The drawback compared to the vacuum desoldering

Re: IBM 5110 - Where does the character set live? And other questions.

On 7/13/17, 4:38 AM, "cctalk on behalf of Robert via cctalk" wrote: >It does look like that last column (or possibly two) is missing, >doesn't it? Going back to the info on your excellent site, the shift >register does seem a

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

Another vote for the Hakko 472D. You can pick them up cheaply as used equipment. Do note that if you prefer the gun style handle over the pencil style, you can interchange them. If you have shop air, there's an even cheaper Hakko 470B -- I've heard it's a better/more effective pump than the 472D's

Re: Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

> On Jul 13, 2017, at 3:31 AM, Eric Smith via cctalk > wrote: > > > 2) vacuum desoldering gun: lots of people liked the Hakko 808, but it's > discontiued. The Hakko FR-300 looks like a reasonable replacement, and > sells for around $310. The drawback compared to the

Through-hole desoldering (was Re: IBM 5110 - Where does the character set live? And other questions.)

On Wed, Jul 12, 2017 at 8:38 PM, Robert via cctalk wrote: > Side note: It's probably not a good time to try out my shiny new heat > gun that I've never yet used. Maybe save my first go on it for > something more replaceable. > A heat gun is definitely NOT the right tool

Re: IBM 5110 - Where does the character set live? And other questions.

On Wed, Jul 12, 2017 at 03:13 AM, Christian Corti wrote: > I hope this is also true in your case. According to your picture, the last > column of each character is missing. It could be an issue around the shift > register (e.g. the Display Data register, a latch,

Re: IBM 5110 - Where does the character set live? And other questions.

On Wed, 12 Jul 2017, Christian Corti wrote: The scans I made are quite old; I do have a much better scanner now so I could just rescan the manuals for better quality. Ok, I've added the 5114 MIM, and also added some pages of the System Logic Manual, including the Display Adapter and the 5114

Re: IBM 5110 - Where does the character set live? And other questions.

On Tue, 11 Jul 2017, Robert wrote: So, faulty support logic, rather than a faulty ROS. That's encouraging. I hope this is also true in your case. According to your picture, the last column of each character is missing. It could be an issue around the shift register (e.g. the Display Data

Re: IBM 5110 - Where does the character set live? And other questions.

On Tue, 11 Jul 2017, Santo Nucifora wrote: I might have some better documentation that I just haven't had a chance to scan yet. [...] 5110 System Library Binder 1 SY31-0550-2 IBM 5110 Computer Maintenance Information Manual SY31-0551-0 IBM 5114 Diskette Unit Maintenance Information Manual

Re: IBM 5110 - Where does the character set live? And other questions.

Hi Christian, I might have some better documentation that I just haven't had a chance to scan yet. I have several binders that make up the IBM 5110 System Library. In terms of manuals enclosed for the 5110, I have the following that I can scan in the next week or so so that you can put a copy

Re: IBM 5110 - Where does the character set live? And other questions.

On Tue, Jul 11, 2017 at 8:08 AM, Christian Corti wrote: > The characters are stored on the display interface card. I had a similar > fault in one of my 5110s, in my case it was a faulty TTL chip (IIRC a 74159 > demux). So, faulty support logic, rather than a

Re: IBM 5110 - Where does the character set live? And other questions.

On Tue, 11 Jul 2017, Robert wrote: maintenance manual and that for the 5103. No luck on the 5114, yet, but I'll keep looking. Ok, I will scan that manual the next days. But in general the contents of the 5114 MIM is contained withing the 5120 MIM. Christian

Re: IBM 5110 - Where does the character set live? And other questions.

On Mon, Jul 10, 2017 at 4:28 PM, Eric Smith wrote: > The Maintenance Information Manual (SY31-0550) has that information. The > most relevant pages are 3-3, 3.6, and 3-35 through 3-39. > > The character generator is the "Display ROS" on the display adapter card, > which is

Re: IBM 5110 - Where does the character set live? And other questions.

On Mon, 10 Jul 2017, Robert wrote: It's always the same characters that are mangled and it's independent of their position on the screen, so I suspect possible corruption in the character set, wherever in ROS or the display card it is held. The characters are stored on the display interface

Re: IBM 5110 - Where does the character set live? And other questions.

On Mon, Jul 10, 2017 at 1:13 PM, Robert via cctalk wrote: > I've recently picked up a 5110 (BASIC only), along with a 5114 floppy > ... > t powers on, completes its self test and gets to LOAD0, but several > of the characters are only partially drawn on the screen. The

IBM 5110 - Where does the character set live? And other questions.

Hi folks. I'm new here, but some of you will know me from the VCF forums, where I go by roberttx. I've recently picked up a 5110 (BASIC only), along with a 5114 floppy drive and a 5103 printer. It has all the mandatory cards, but no optional ones. It powers on, completes its self test and gets