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Vintage Computers Any vintage computer systems, calculators, video games etc., but with an emphasis on 1980s and earlier equipment.

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Old 3rd Nov 2023, 6:13 pm   #701
ScottishColin
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Default Re: Commodore PET 4032/8050/3022

It did arrive, but I've left the 6845 right now as it's happy.

I have just bought that lot I mentioned a couple of weeks back - 8032, 3040 disk drive, 8026 printer and the 3022 printer so I suspect the soldering iron will be powered on soon....

Colin.

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Originally Posted by SiriusHardware View Post
One last question concerning the original repairs to this PET - at one point a 'proper' 6545 CRTC IC was ordered in case the UM6845 wasn't as compatible as hoped, although it did turn out to work well - did the 6545 ever eventually arrive and get put into the machine?
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Old 3rd Nov 2023, 6:23 pm   #702
SiriusHardware
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Default Re: Commodore PET 4032/8050/3022

Did you actually pick up those items, then? I guessed one of your relations down Lincolnshire way was probably going to be the middleman, and you'd go and get them the next time you were due to see them anyway.

One thing I would suggest is a visual inspection of all mains-side wiring in plugs, sockets and mains wiring inside the units before you ever turn them on, because there have been at least two examples of potentially deadly mains 'wiring' in units that you have already repaired.
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Old 3rd Nov 2023, 7:14 pm   #703
ScottishColin
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Default Re: Commodore PET 4032/8050/3022

I don't have them yet but they are with my sister at the moment.

I certainly won't be plugging anything straight in and turning it on this time.

I am hopefully going to pick the items up somewhere mid-way in a week or two.

The previous owner was a TV repair man - I have pointed him at these forums in case he is interest.

Colin.

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Originally Posted by SiriusHardware View Post
Did you actually pick up those items, then? I guessed one of your relations down Lincolnshire way was probably going to be the middleman, and you'd go and get them the next time you were due to see them anyway.

One thing I would suggest is a visual inspection of all mains-side wiring in plugs, sockets and mains wiring inside the units before you ever turn them on, because there have been at least two examples of potentially deadly mains 'wiring' in units that you have already repaired.
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Old 4th Nov 2023, 11:40 am   #704
SiriusHardware
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Default Re: Commodore PET 4032/8050/3022

Well, if the collection belonged to someone who was intrinsically machine-sympathetic (someone who wouldn't store them underwater or leave bare mains wires dangling inside) that gives me some hope that they might not be too bad. They may even work! We look forward to the up-coming thread about those.
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Old 9th Nov 2023, 12:44 am   #705
ortek_service
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Default Re: Commodore PET 4032/8050/3022

It looks like Colin's PET computer & Peripheral collection is rather out-doing the Cambridge CfCH!
- At least what they have on display, in their typical company office with some Business (USA) computers (before IBM/Compatibles PC's).
Although, no doubt they've got many more in storage that they haven't got a space to display at present, but might bring-out in the central area of the main hall - swapping-out with others on display - at any future Commodore-themed event (like with recent Japanese systems one) they might do (They have had Acorn & Sinclair themed weekends, a few years ago).

Anyway, if Colin / others haven't been there yet, then I thought the attached pictures of their setup (+video of PET running demo prog.) may be of interest.
Attached Thumbnails
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Name:	IMG_3290__Commodore-PET_desk.jpg
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ID:	287609   Click image for larger version

Name:	IMG_3289__Commodore-PET_desk_(Left-side).jpg
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ID:	287610  
Attached Files
File Type: zip Computers(USA)_Office__PET-Desk.zip (959.8 KB, 14 views)
File Type: zip Computers(USA)_Office__TRS-80.zip (1.03 MB, 14 views)
File Type: zip PET_(Running-Demo)_CfCH__'Computers(TRS80+PET)_Office'__MVI_3286.zip (3.76 MB, 15 views)
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Old 5th Dec 2023, 7:09 pm   #706
ScottishColin
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Default Re: Commodore PET 4032/8050/3022

Should have brought my scope and meter on holiday. They look like they've had a bit of time on a damp place so they're going to be fun.

Colin.
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Old 5th Dec 2023, 7:38 pm   #707
SiriusHardware
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Default Re: Commodore PET 4032/8050/3022

I'm surprised you don't have a meter in the van, always useful for troubleshooting this and that, especially batteries.

They do look quite encrusted and no doubt that was reflected in the price but they still seem like a bargain if you reckon each of them to have cost a quarter of the total price you paid. And you do seem to be the 'rusty PET' specialist so I don't imagine that aspect will faze you at all. It does make me afraid you'll be looking at random chip death syndrome again as it seems to be the go-to affliction for PETs which have been stored in a damp environment.

If you can't get cracking on them until you get them home, you can at least get busy rounding up links to all of the relevant circuit diagrams and other info you'll need so you can hit the ground running when you get back.
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