Take my money! BNIB BBC Master!

peddle your acorn wares here!
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spuggets
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Take my money! BNIB BBC Master!

Post by spuggets » Sun Jun 09, 2019 6:26 pm

Not me, maybe someone else here though?

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Watching with interest!

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balladof32
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Re: Take my money! BNIB BBC Master!

Post by balladof32 » Sun Jun 09, 2019 8:16 pm

I have a new one also so when you find out let me know

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CMcDougall
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Re: Take my money! BNIB BBC Master!

Post by CMcDougall » Sun Jun 09, 2019 8:58 pm

seen this on boringBook, it's a cherry keyboard, so useless for electron keyswitches, so worth Nil / 0 :lol:
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mr-macrisc
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Re: Take my money! BNIB BBC Master!

Post by mr-macrisc » Sun Jun 09, 2019 9:10 pm

Wow

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martinw
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Re: Take my money! BNIB BBC Master!

Post by martinw » Mon Jun 10, 2019 7:47 am

£200, maybe £250 with a couple of people after it (best guess) :D

Finger in air, although I have one too, which I didn't pay that much for (from memory) but it was a while ago now.

Martin

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balladof32
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Re: Take my money! BNIB BBC Master!

Post by balladof32 » Mon Jun 10, 2019 7:58 am

I turned mine into a 512 model , when hell freezes over I'll have a play around with GEMM

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martinw
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Re: Take my money! BNIB BBC Master!

Post by martinw » Mon Jun 10, 2019 8:07 am

balladof32 wrote:
Mon Jun 10, 2019 7:58 am
I turned mine into a 512 model , when hell freezes over I'll have a play around with GEMM
It's good fun (for a while :))

viewtopic.php?f=41&t=5594&hilit=master+ ... =30#p52141

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Racksus
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Re: Take my money! BNIB BBC Master!

Post by Racksus » Sun Jul 21, 2019 9:22 pm

Is this Beeb for sale?

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Re: Take my money! BNIB BBC Master!

Post by VectorEyes » Mon Jul 22, 2019 12:03 am

If you mean the one referenced in the first post in this thread... I was watching it with great interest on Facebook Marketplace. The seller said that he was going to come back a bit later and offer it for sale once he'd decided on a price, but he never did. My assumption was that someone had made him a really good offer and he'd accepted.

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AndyF
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Re: Take my money! BNIB BBC Master!

Post by AndyF » Mon Jul 22, 2019 10:14 am

CMcDougall wrote:
Sun Jun 09, 2019 8:58 pm
seen this on boringBook, it's a cherry keyboard, so useless for electron keyswitches, so worth Nil / 0 :lol:
I had one with that type of membrane(?) keyboard once, it had a reasonable feel to it. Twas quiet though. Reminded me slightly of the feel of the later Amstrad CPC keyboards in some ways. Not a bad thing. :) My only concern with that type of keyboard would be the extreme problem of locating a membrane 'circuit sheet' if one was needed ni the future as some of the Speccy ones are a bit lolprice and difficult to find.
Last edited by AndyF on Mon Jul 22, 2019 10:16 am, edited 1 time in total.
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danielj
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Re: Take my money! BNIB BBC Master!

Post by danielj » Mon Jul 22, 2019 12:26 pm

I think the speccy ones are about a tenner aren't they? Usually to be found on sellmyretro. A membrane for a cherry master would be expensive as there's a tiny market for them, so you'd probably have to get it done as a bespoke thing :?

d.
Last edited by danielj on Mon Jul 22, 2019 12:26 pm, edited 1 time in total.

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AndyF
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Re: Take my money! BNIB BBC Master!

Post by AndyF » Mon Jul 22, 2019 6:24 pm

danielj wrote:
Mon Jul 22, 2019 12:26 pm
I think the speccy ones are about a tenner aren't they? Usually to be found on sellmyretro. A membrane for a cherry master would be expensive as there's a tiny market for them, so you'd probably have to get it done as a bespoke thing :?

d.
Only if you wanted a rubbery keyed type one, the + one's are at least double that iirc and the +2/+3 ones double that *if* you can find any lol! :)

I concur I've never actually seen one advertised for the Master, no doubt Acorn would of had it listed as a spare part maybe (unless they wanted to sell a whole assembled base either with or without keys) , but on the other side to that I've never seen that I can recall anyone asking for one either.

I've probably had a dozen or so 128's through my hands over the past few years and only ever had one with this keyboard type. I can't remember seeing one elsewhere with this type of keyboard either, but I've hardly gone out my way to check! :D I don't know if it was a later only fitment to save monies (to go with say Iss2 mainboard?) or some kind of alternative fitment when the main type was awol.
Last edited by AndyF on Mon Jul 22, 2019 6:25 pm, edited 1 time in total.
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1024MAK
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Re: Take my money! BNIB BBC Master!

Post by 1024MAK » Mon Jul 22, 2019 7:44 pm

RWAP commissions the ZX Spectrum 16K / 48K (rubber key) membranes. Because of the number he can sell, the cost is reasonable. It’s a similar story with the ZX Spectrum+ / ZX Spectrum 128K (toastrack), but as these are multilayer membranes, they cost more. Both these membrane types are very common failures because the original parts go brittle and crack / break. Mostly where the tails bend to go to the PCB connections.

The membranes used in the Amstrad produced models (+2, +2A, +2B, +3 and +3B) are made of a different material and are much longer lasting. Hence there is little demand for new production runs. If keyboards on these machines do appear to be causing problems, a clean of the membrane with a damp cloth and cleaning of the key mechanism usually sorts the problem out.

I’ve not played with an Acorn membrane yet, so can’t help with specifics in that regard.

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AndyF
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Re: Take my money! BNIB BBC Master!

Post by AndyF » Mon Jul 22, 2019 10:21 pm

1024MAK wrote:
Mon Jul 22, 2019 7:44 pm
I’ve not played with an Acorn membrane yet, so can’t help with specifics in that regard.

Mark
I *think* its multi-layered a bit like the Amstrad Speccies one, if that makes sense. :) I'm going from vague memory here, a cursory Google did not reveal anything useful although I did not look too hard given it was a curiosity search.
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1024MAK
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Re: Take my money! BNIB BBC Master!

Post by 1024MAK » Tue Jul 23, 2019 12:53 am

AndyF wrote:
Mon Jul 22, 2019 10:21 pm
1024MAK wrote:
Mon Jul 22, 2019 7:44 pm
I’ve not played with an Acorn membrane yet, so can’t help with specifics in that regard.

Mark
I *think* its multi-layered a bit like the Amstrad Speccies one, if that makes sense. :) I'm going from vague memory here, a cursory Google did not reveal anything useful although I did not look too hard given it was a curiosity search.
Only the Amstrad ZX Spectrum +2 (grey) is multilayered, the +2A, +2B, +3 and +3B are single membranes.

By multilayered, I mean four conductive layers, whereas by single membranes, I mean just two conductive layers.
Multilayered membranes are used on the ZX Spectrum+ / ZX Spectrum 128K and +2 (grey) because the extra keys (beyond the original 40 keys on a rubber key) require two separate but simultaneous sets of switch contacts to make.

In the +2A, +2B, +3 and +3B logic was used in the gate array to perform this electronically instead. Hence not needing a multilayer membrane.

If I had to guess, I would speculate that the Acorn membrane keyboards were NOT multilayer types.

Mark

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