Search found 153 matches

by gidandridge
Sun Jul 26, 2020 5:50 pm
Forum: past all-day virtual ABugs
Topic: All-day 'Virtual' Acorn session #6, Saturday 1st August 2020, 9am - 11pm [NOW FULL!]
Replies: 105
Views: 6018

Re: All-day 'Virtual' Acorn session #6, Saturday 1st August 2020, 9am - 11pm

Can I join in please. :D

I'm not sure how much of the day I cam make, Should be good from 2pm until 10pm with some dinner in there somewhere. May even be able to start at 9am but can't guarantee.

Cheers.
by gidandridge
Mon Jun 29, 2020 9:42 pm
Forum: 8-bit acorn hardware
Topic: Microvitec Cub - Needs some help (Refurbishment)
Replies: 20
Views: 1112

Re: Microvitec Cub - Needs some help (Refurbishment)

Nice 👍 8) You know you are an old git when the off spring / niece / nephew / whatever complain about a noise from a CRT TV / monitor that you can’t hear anymore.... So forget buying that nice expensive hi-fi system, it’s 50 to 20 MHz frequency range will be wasted on an old git who can’t hear audio...
by gidandridge
Mon Jun 29, 2020 7:30 pm
Forum: 8-bit acorn hardware
Topic: Microvitec Cub - Needs some help (Refurbishment)
Replies: 20
Views: 1112

Re: Microvitec Cub - Needs some help (Refurbishment)

Keep in mind that if the monitor is kept inside in a room that is warm and dry, then the rate of rusting will be very slow. Mark Well my "retro cave" is my loft. Fully converted and fully insulated. So hopefully with the clean up I did and the warm dry environment I think it should be okay. I'm ple...
by gidandridge
Sun Jun 28, 2020 10:15 am
Forum: 8-bit acorn hardware
Topic: Microvitec Cub - Needs some help (Refurbishment)
Replies: 20
Views: 1112

Re: Microvitec Cub - Needs some help (Refurbishment)

The advice to me back then, and which I pass on to you, is don’t touch anything that will disturb the physical magnetic set-up / calibration. Otherwise you will have to try to realign everything from scratch... So the urge to remove the spring clips is starting to fade ..... If you move it, you'll ...
by gidandridge
Sun Jun 28, 2020 9:53 am
Forum: acorn atom and acorn system series
Topic: Atom delivery by Hermes
Replies: 21
Views: 1281

Re: Atom delivery by Hermes

That's a truly shocking amount of damage. :shock: :(
by gidandridge
Sat Jun 27, 2020 7:59 pm
Forum: 8-bit acorn hardware
Topic: Microvitec Cub - Needs some help (Refurbishment)
Replies: 20
Views: 1112

Re: Microvitec Cub - Needs some help (Refurbishment)

New BC337 transistors should be easy to find (they are still in production). Mark Thanks mark, ordered, arrived, fitted and replaced. :D I've been busy the last week so only had time to work on it today. All going well and I had planned to reassemble everything tomorrow. However this evening I was ...
by gidandridge
Sat Jun 20, 2020 8:13 pm
Forum: 8-bit acorn hardware
Topic: Microvitec Cub - Needs some help (Refurbishment)
Replies: 20
Views: 1112

Re: Microvitec Cub - Needs some help (Refurbishment)

Update, so I have been reading ... Servicing the Microvitec Cub Series 3 - by Arthur Rumbelow. From Television Magazine, August 1992, page 718. (https://docplayer.net/89011606-Servicing-video-satellite-developments-free-catalogue-inside-servicing-the-finlux-3000-chassis-ad-converters-for-dmms-dx-tv....
by gidandridge
Sat Jun 20, 2020 7:15 pm
Forum: 8-bit acorn hardware
Topic: (Repair/Refurb) Microvitec Cub 653 (1451DS)
Replies: 13
Views: 901

Re: (Repair/Refurb) Microvitec Cub 653 (1451DS)

I've just finished fixing this one. Full recap and a new PTC later, and the shimmering's gone - I'd call that a win. =D> Well done! Glad it's fixed it all. Another Cub monitor back to good health. Do you think it was the PTC in the end that was causing your shimmering? Did you ever try and run it w...
by gidandridge
Sat Jun 20, 2020 7:05 pm
Forum: 8-bit acorn hardware
Topic: Microvitec Cub - Needs some help (Refurbishment)
Replies: 20
Views: 1112

Re: Microvitec Cub - Needs some help (Refurbishment)

Someone’s been changing capacitors before you I think... I'm sure you're right Mark. Quite why anyone would choose to replace a capacitor with a a noticeably lower capacitance though? Pass on that one. :-k And are you trying to confuse us... C26 < - > C28? Mark Ah, yes, You got me. The errant 10uF ...
by gidandridge
Sat Jun 20, 2020 3:58 pm
Forum: 8-bit acorn hardware
Topic: Microvitec Cub - Needs some help (Refurbishment)
Replies: 20
Views: 1112

Re: Microvitec Cub - Needs some help (Refurbishment)

B.T.W. what value is fitted in position C27? C27 being the first stage smoothing/decoupling for the 124V power rail, and is C28 the same make as C27? Thanks Mark. So this is what was fitted to the board for C26, C27 and C28. IMG_20200620_155201.jpg The two 47uF Rubycon's were in C27 and C28. The 10...
by gidandridge
Fri Jun 19, 2020 7:22 pm
Forum: 8-bit acorn hardware
Topic: (Repair/Refurb) Microvitec Cub 653 (1451DS)
Replies: 13
Views: 901

Re: (Repair/Refurb) Microvitec Cub 653 (1451DS)

D'oh, I think I may have gotten axial and radial mixed up! I'll probably sub in a poly film capacitor for it and the 680nF. So for the 1uF 63v C18 I've just ended up ordering one of these ... https://uk.farnell.com/multicomp/mcmhr63v105m4x7/cap-1-f-63v-20/dp/9452737 ... so yes that is a radial, and...
by gidandridge
Fri Jun 19, 2020 3:32 pm
Forum: 8-bit acorn hardware
Topic: Microvitec Cub - Needs some help (Refurbishment)
Replies: 20
Views: 1112

Re: Microvitec Cub - Needs some help (Refurbishment)

Okay slight mystery ... I'm replacing the capacitors and have found that capacitor C28 on my monitor was fitted with a 10uf 350v electrolytic. The service manual lists that C28 should actually be 47uf 250v. :? So has this been replaced at some point with a different value? I did notice this when ord...
by gidandridge
Fri Jun 19, 2020 2:21 pm
Forum: 8-bit acorn hardware
Topic: (Repair/Refurb) Microvitec Cub 653 (1451DS)
Replies: 13
Views: 901

Re: (Repair/Refurb) Microvitec Cub 653 (1451DS)

I decided to check the PTC for the degauss coil (TH1). It's blown open on the L-N (heater) side, so the degauss coil will either be stuck on or completely dead... I've posted here -- viewtopic.php?f=3&t=10514&p=274176#p274176 -- but the vital stats are: Degauss coil - 26 ohms open circuit between p...
by gidandridge
Fri Jun 19, 2020 2:13 pm
Forum: 8-bit acorn hardware
Topic: (Repair/Refurb) Microvitec Cub 653 (1451DS)
Replies: 13
Views: 901

Re: (Repair/Refurb) Microvitec Cub 653 (1451DS)

I'm thinking of recapping mine too, just need to sit down with a pen and paper and note down all the caps. Mine stops shimmering and settles down once it's warmed up, so I'm suspicious of a bad cap or a dodgy solder joint. Seems we're working in parallel. I've done the exact same this week and orde...
by gidandridge
Fri Jun 19, 2020 1:57 pm
Forum: 8-bit acorn hardware
Topic: Microvitec Cub - Needs some help (Refurbishment)
Replies: 20
Views: 1112

Re: Microvitec Cub - Needs some help

Preferred brush type is horse hair. You can get air duster aerosol spray cans. But keep them upright. If you use them upside down, or at a low angle, cold liquid will spurt out! Check the soldering on any large components, on any components that run hot (power resistors, diodes, transistors). Defin...
by gidandridge
Sun Jun 14, 2020 7:22 pm
Forum: 8-bit acorn hardware
Topic: (Repair/Refurb) Microvitec Cub 653 (1451DS)
Replies: 13
Views: 901

Re: (Repair/Refurb) Microvitec Cub 653 (1451DS)

Nice work! Nice to see another Cub cleaned up and pressed back into active service. :D Interesting also to read that the ""Contrast pot not working" was a bit of lie :lol: It must be the day for working on a Cub. I stripped my own down today ... https://stardot.org.uk/forums/viewtopic.php?f=3&t=19672
by gidandridge
Sun Jun 14, 2020 3:35 pm
Forum: 8-bit acorn hardware
Topic: Microvitec Cub - Needs some help (Refurbishment)
Replies: 20
Views: 1112

Microvitec Cub - Needs some help (Refurbishment)

Hi All, I've recently acquired a Microvitec CUB 1431MS. Seems to be okay. It's in good working order and gives a picture. After running it for few hours I noticed a couple of things. First the image is pin-cushioning. It's tapering in at the top and bottom. Secondly it's shimmering. Almost feels lik...
by gidandridge
Fri Jun 05, 2020 4:30 pm
Forum: acorn atom and acorn system series
Topic: Strange Atom Behaviour
Replies: 9
Views: 635

Re: Strange Atom Behaviour

Thanks and totally agree.

Still I reserve the right to feel like a prize plumb. :roll: :D

People here on the forum are always incredibly helpful. =D>
by gidandridge
Fri Jun 05, 2020 3:14 pm
Forum: acorn atom and acorn system series
Topic: Strange Atom Behaviour
Replies: 9
Views: 635

Re: Strange Atom Behaviour

Even if it was never broken! ](*,)

I'm off to go hide.
by gidandridge
Fri Jun 05, 2020 3:02 pm
Forum: acorn atom and acorn system series
Topic: Strange Atom Behaviour
Replies: 9
Views: 635

Re: Strange Atom Behaviour

Thank you both! I think I must have been having an early "senior moment" or something. :oops: I think what's happened here is that I got my Atom only a few months ago and initially spent quite a bit of time getting to know it and doing some programming. I was getting on quite well and even graduated...
by gidandridge
Fri Jun 05, 2020 1:00 pm
Forum: acorn atom and acorn system series
Topic: Strange Atom Behaviour
Replies: 9
Views: 635

Re: Strange Atom Behaviour

So I am getting closer to understanding the problem. I tired this ... IMG_20200605_125653.jpg So I guess that without me picking an address for the variable it's assigning an address in either RAM that's not working, or does not exist. Thing is I have swapped all the RAM chips about, but that does n...
by gidandridge
Fri Jun 05, 2020 12:44 pm
Forum: acorn atom and acorn system series
Topic: Strange Atom Behaviour
Replies: 9
Views: 635

Strange Atom Behaviour

Hi All, I've spent my morning trying to track down a really odd problem with my Atom. I few months ago I put it to one side as I was working on a project on my Electron. It was working fine up until then. Today I plugged it back in am having a problem using variables. Numeric variables are fine. But...
by gidandridge
Wed Apr 29, 2020 9:15 pm
Forum: 8-bit acorn software: games - high scores
Topic: Electron Firetrack - 3,314,420 - beat that!
Replies: 1
Views: 374

Electron Firetrack - 3,314,420 - beat that!

So playing Firetrack on my Elk this evening and managed this ... IMG_20200429_210438.jpg Yes, that does read three million, three hundred and fourteen thousand, four hundred and twenty! :shock: In fairness, I think I actually scored 14,420, the extra 3,300,000 seemed to get added after my game play ...
by gidandridge
Tue Apr 21, 2020 7:22 pm
Forum: past weeknight 'general' acorn sessions
Topic: Weekday 'Virtual' Acorn session #1, Thursday 23rd April 2020, 6pm - 9pm
Replies: 52
Views: 3446

Re: Midweek zoom meetup. 23/4/20 6pm - 9pm

I'd love to join in please. :) Should be there from about 7pm onward if that's okay. :D Edit: If you're interested I can setup a Google Hangouts (actually called Google Meet) using my business G Suite account. That way we can have unlimited call time. It all works in a browser, no software required....
by gidandridge
Sat Apr 18, 2020 2:59 pm
Forum: 8-bit acorn hardware
Topic: What printer are you still using?
Replies: 14
Views: 862

What printer are you still using?

HI All, I'm curious how many of us might still be using a dot matrix printer with their setup? I don't have one myself but have thought about getting one. Problem is what to do about printer ribbons? I've heard that some companies still produce new ribbons but I figure this must be for a limited num...
by gidandridge
Sun Apr 12, 2020 5:48 pm
Forum: 8-bit acorn software: other
Topic: Basic Editors for the Electron
Replies: 10
Views: 665

Re: Basic Editors for the Electron

lurkio wrote:
Sun Apr 12, 2020 5:43 pm
gidandridge wrote:
Sun Apr 12, 2020 5:01 pm
Now I just have to work out how to use it! :lol:
The manual is here:
:idea:
Thanks, A light bit of bedtime reading. :D
by gidandridge
Sun Apr 12, 2020 5:01 pm
Forum: 8-bit acorn software: other
Topic: Basic Editors for the Electron
Replies: 10
Views: 665

Re: Basic Editors for the Electron

Solved my problem in the end.

Turns out downloading the ROMS here (viewtopic.php?f=3&t=7719&start=60#p255699) worked perfect for me. :D

Not sure why the original ones didn't? :?

Now I just have to work out how to use it! :lol:
by gidandridge
Sun Apr 12, 2020 2:02 pm
Forum: 8-bit acorn software: other
Topic: Basic Editors for the Electron
Replies: 10
Views: 665

Re: Basic Editors for the Electron

Humm, so tried it in banks 6/7 but still getting strange behaviour from it. :-k

Now if I press ESCAPE it displays 'Ready:' in the top right but this overtypes everything else that is already displayed on the screen. If I press ESCAPE a second time it hangs until I press BREAK. :?
by gidandridge
Sun Apr 12, 2020 1:53 pm
Forum: 8-bit acorn software: other
Topic: Basic Editors for the Electron
Replies: 10
Views: 665

Re: Basic Editors for the Electron

Read the post you linked to. They won't work in banks 5/6, must be 4/5 or 6/7, etc. You need it loading into either banks 0/1 - 2/3 - 4/5 - 6/7 etc. for it to work correctly. Ha, thanks Gents. I did read it but incorrectly assumed that it was an example of consecutive banks, rather than an explicit...
by gidandridge
Sun Apr 12, 2020 1:42 pm
Forum: 8-bit acorn software: other
Topic: Basic Editors for the Electron
Replies: 10
Views: 665

Re: Basic Editors for the Electron

Thanks Dave. I've loaded the Advanced Basic Editor ROMs (from https://stardot.org.uk/forums/viewtopic.php?t=7719&start=30#p81362 ) into sideways RAM banks 5/6. I'm finding that it's not behaving for me. For example if I press ESCAPE I get screen corruption and it hangs. Should I be able to run it ju...

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