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Re: Sinclair QL - wanted one since 1984
Posted: 10 Jun 2022 14:55
by rubber_jonnie
PhilC wrote: 10 Jun 2022 14:52
@rubber_jonnie yes please but no rush
If you PM me your address I will pop some in the post to you.
Re: Sinclair QL - wanted one since 1984
Posted: 10 Jun 2022 17:43
by Wrangler
PhilC wrote: 10 Jun 2022 13:53
I'm going to try and make a 3d printed plug to match the Power socket on the QL as well.
I think I saw somewhere that 3 pin fan sockets for CPUs and the like can be made to fit the QL power socket with a bit of persuasion. I've not tried this myself but it might be a quick way to see if the thing has life before working on a more permanent solution?
Re: Sinclair QL - wanted one since 1984
Posted: 10 Jun 2022 17:46
by PhilC
@Wrangler ill check that out, thank you. :thumbup:
Re: Sinclair QL - wanted one since 1984
Posted: 10 Jun 2022 19:39
by Icky
@rubber_jonnie - have you tried using SMSQ/E yet with the Gold Card?
Re: Sinclair QL - wanted one since 1984
Posted: 10 Jun 2022 19:46
by stephen_usher
I must admit that I'm a traditionalist and not keen on the replacement OSs...
It just looks wrong without the "© Sinclair Research Ltd 1983" banner. :-)
My original machine had JS ROMs from new and the rescued machine got JS ROMs fitted.
Re: Sinclair QL - wanted one since 1984
Posted: 10 Jun 2022 22:57
by rubber_jonnie
Icky wrote: 10 Jun 2022 19:39
@rubber_jonnie - have you tried using SMSQ/E yet with the Gold Card?
Not yet, no. It is somewhere on my massive list of 'Things to to when I no longer have any broken computers to fix' :dizzy:
Re: Sinclair QL - wanted one since 1984
Posted: 12 Jun 2022 14:15
by PhilC
The new power supply bits are arriving tomorrow morning, so hopefully I'll be able to make something up so that I can test it sometime tomorrow evening.
The QL has also had a bit of a spruce up but is still lacking its Caps Lock and CTRL keys. I've seen someone on eBay selling them but they want a fiver per key, so I may just have a go at designing and 3d printing some new ones in the short term.
Re: Sinclair QL - wanted one since 1984
Posted: 13 Jun 2022 10:26
by PhilC
Well that’s the parts arrived today, actually smaller than I thought they would be as well.
749E660D-530D-4EEA-A19E-EB8938E60B6E.jpeg
Re: Sinclair QL - wanted one since 1984
Posted: 13 Jun 2022 18:05
by PhilC
So the QL PSU ties both the 15VAC neutral and the 9VDC negative to the same pin.
Never done this before, is there anything I should fit? Caps and diodes on the DC side of things perhaps?
I’m off to do some Googling. Anyone here done this before in a power supply?
Re: Sinclair QL - wanted one since 1984
Posted: 13 Jun 2022 19:06
by PhilC
I'm sure I'm being silly with the whole PSU secondary voltage neutral going to DC ground, I mean FFS it's what it does in an AC/DC transformer, the only thing that's confused me is that I'm using an AC/AC transformer to get the 15VAC that the QL needs, then an SMPS 9VDC power supply fed from 230VAC to provide it with power.
I think I need a lie down :lol: