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Help needed in reviving my old a3010

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Martin Taylor

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Apr 14, 2021, 3:16:50 PM4/14/21
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Hi good people been many a year since i used these news groups but here we go

I recently come across my old A3010 had been stored in the garage for years and is looking a little sorry in state so i have stripped in down, A little bit of repair work needed on the mainboard but very lucky the battery has not leaked so that is the first thing to come out, right down to the help i need looking at the motherboard on the right hand side we have the memory slot to the right of the memory there is a IC22 chip just above that there is a c165 capacitor can some please tell me the values of this capacitor has mine has crumbled to dust its a long blue capacitor.

This is one of the A3010 with the Adelaide daughter boards on it so i would really like to get it running again, and it was my first computer all them years ago.


Thank you

Martin

Theo

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Apr 14, 2021, 6:24:37 PM4/14/21
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Martin Taylor <mtaylo...@gmail.com> wrote:
> I recently come across my old A3010 had been stored in the garage for
> years and is looking a little sorry in state so i have stripped in down, A
> little bit of repair work needed on the mainboard but very lucky the
> battery has not leaked so that is the first thing to come out, right down
> to the help i need looking at the motherboard on the right hand side we
> have the memory slot to the right of the memory there is a IC22 chip just
> above that there is a c165 capacitor can some please tell me the values of
> this capacitor has mine has crumbled to dust its a long blue capacitor.

That information is in the TRM which is here:
https://archive.org/details/a30x0trmcover/A30x0%2BA4000trm/page/n31/mode/2up
page 32

C165
Acorn part 0621,470
Description: CPCTR 47U ALEC 10V AX
Qty: 1

which sounds like a 47uF 10V aluminium electrolytic with axial leads.

It may be worth going around and changing all the other similar ones, since
if that one has crumbled the others might not be far behind.

Theo

Stuart

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Apr 15, 2021, 4:01:26 AM4/15/21
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In article <U5y*OR...@news.chiark.greenend.org.uk>,
Theo <theom...@chiark.greenend.org.uk> wrote:

> C165 Acorn part 0621,470 Description: CPCTR 47U ALEC 10V AX Qty: 1

> which sounds like a 47uF 10V aluminium electrolytic with axial leads.

> It may be worth going around and changing all the other similar ones,
> since if that one has crumbled the others might not be far behind.

It is perhaps worth noting that any Aluminium electrolytic, the most
common electrolytic type, of 47uf which will fit, will do as long as the
working voltage is equal to or greater than 10V.

An example would be 47u 25V such as CPC order number CA05083 as long as it
will fit.

--
Stuart Winsor

Tools With A Mission
sending tools across the world
http://www.twam.co.uk/

Martin Taylor

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Apr 15, 2021, 11:27:06 AM4/15/21
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Thank you very much Theo and Stuart for your fast replies, i have order the correct ones from CPC and i have ordered enough to replace the others on the board too better to be safe.

Doug Webb

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Apr 15, 2021, 2:00:25 PM4/15/21
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In message <551ceb11-25a1-48ce...@googlegroups.com>
Martin Taylor <mtaylo...@gmail.com> wrote:

> Hi good people been many a year since i used these news groups but here we go

Welcome back.

> I recently come across my old A3010 had been stored in the garage for
> years and is looking a little sorry in state so i have stripped in down, A
> little bit of repair work needed on the mainboard but very lucky the
> battery has not leaked so that is the first thing to come out, right down
> to the help i need looking at the motherboard on the right hand side we
> have the memory slot to the right of the memory there is a IC22 chip just
> above that there is a c165 capacitor can some please tell me the values of
> this capacitor has mine has crumbled to dust its a long blue capacitor.

If no one is able to help then there are technical documents on Chris's
Acorn website:

"chrisacorns.computinghistory.org.uk/docs/Acorn/Manuals/Manuals.html"

You can also try asking on Stardot forums as well.

> This is one of the A3010 with the Adelaide daughter boards on it so i
> would really like to get it running again, and it was my first computer
> all them years ago.

Good luck.


--
Experience the future using ARM Technology - ARMBook,BeagleBoard -xM,
PandaBoard,Raspberry Pi,iMX6/ARMX6,IGEPv5 & Titanium powered by RISC OS
5.28.
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