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Advice on RISC PC battery replacement |
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daniel_90125 (22:14 15/6/2012)
thecellartroll (23:07 15/6/2012)
pwx (11:51 16/6/2012)
trevj (19:45 16/6/2012)
filecore (20:32 16/6/2012)
daniel_90125 (22:11 16/6/2012)
trevj (11:10 17/6/2012)
daniel_90125 (22:57 17/6/2012)
PaulV (23:53 17/6/2012)
daniel_90125 (23:23 18/6/2012)
daniel_90125 (22:14 21/6/2012)
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Daniel Salter |
Message #120603, posted by daniel_90125 at 22:14, 15/6/2012 |
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Posts: 10
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Hi all
I have a 1994 RISC PC that is still on its original CMOS RAM battery. I'd like to replace the battery but my efforts at doing this with my A3000 were very messy; I managed to replace that battery with a couple of AAAs but not very well at all, so I'd be happy to leave the RISC PC job to experts! Do you know if there are any companies out there who still do this kind of thing? I live in Nottinghamshire.
Regards
Daniel |
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Steven Gregory |
Message #120607, posted by thecellartroll at 23:07, 15/6/2012, in reply to message #120603 |
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Posts: 134
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The RPC battery is quite easy to replace with some wires that lead to an AA battery holder. There is plenty of space for the soldering iron around the battery.
Undoing damage caused by not replacing the battery; that's the hard bit! |
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Philip Webster |
Message #120614, posted by pwx at 11:51, 16/6/2012, in reply to message #120603 |
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Posts: 227
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I bought a replacement battery from APDL. Easy to solder in, works a treat. |
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Trevor Johnson |
Message #120619, posted by trevj at 19:45, 16/6/2012, in reply to message #120614 |
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I bought a replacement battery from APDL. Easy to solder in, works a treat. I'll second that. The only previous soldering I'd done was as a kid at school (don't recall spending long enough on that part of the curriculum to even check whether it worked). Had never used a solder sucker before, but that worked out OK. I didn't think of snipping the legs of the old cell to remove them individually, so instead walked it out like a Lego man moving a doll's house wardrobe. |
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Jason Togneri |
Message #120621, posted by filecore at 20:32, 16/6/2012, in reply to message #120619 |
Posts: 3852
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I once soldered a bypass to my ZX Spectrum, for some reason they had composite out by default but this got routed through an RF modulator, meaning it was hard to use modern TVs as an output device. A couple of snips and a little soldering later, and it outputs composite video directly, and I can use it with my LCD telly  |
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Daniel Salter |
Message #120622, posted by daniel_90125 at 22:11, 16/6/2012, in reply to message #120621 |
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Well, thanks for your advice chaps. I guess I had better brave it! I have a soldering iron, solder, flux, AAA batteries and a battery holder, just a lack of confidence! I'll perhaps do a bit of practicing first, and then take the plunge! |
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Trevor Johnson |
Message #120627, posted by trevj at 11:10, 17/6/2012, in reply to message #120622 |
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Posts: 625
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Go for it. You'll probably get away without needing a solder sucker. |
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Daniel Salter |
Message #120630, posted by daniel_90125 at 22:57, 17/6/2012, in reply to message #120627 |
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Posts: 10
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I had a go at re-soldering a wire that had broken off the battery holder of my of A440 today, and failed abysmally! My feeble efforts at soldering make me very concerned about tacking the RISC PC battery problem! I wonder if I can cut the legs off the battery, leaving the legs still attached to the motherboard, and then find some kind of electrical connector to screw to these legs, thus avoiding the need for soldering at all? What do you think? |
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Paul Vernon |
Message #120631, posted by PaulV at 23:53, 17/6/2012, in reply to message #120630 |
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Hi Daniel,
I'm just down the road from you in Leicester. If you want to have some soldering done for you let me know and we can arrange something.
You pretty much know what my soldering work is like as the retro-kit site is mine 
Paul |
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Daniel Salter |
Message #120637, posted by daniel_90125 at 23:23, 18/6/2012, in reply to message #120631 |
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Posts: 10
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Thanks for the kind offer Paul! I might take you up on that! I could probably find some other jobs for you at the same time
I have an idea about I might replace the RISC PC battery without doing any soldering at all but if it proves to be a bad idea, I shall be in touch with you!
Thanks a lot!
Daniel |
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Daniel Salter |
Message #120660, posted by daniel_90125 at 22:14, 21/6/2012, in reply to message #120637 |
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Posts: 10
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Hi again folks.
I have finally sorted out the battery replacement problem on my RISC PC, but you'll probably think I am crazy for the way I did it! I managed to prise the old battery off the legs, leaving them attached to the motherboard. I then bought some "macaroni type connectors" (plastic efforts containing a metal core with two screws), placed these over the legs on the motherboard, and wired them to a battery holder with a AAA battery in it. The only worrying thing is that I spotted a transister on the bottom of the computer case during this operation that seems to have fallen off the Strong ARM card! Still seems to work though, although I guess I had better get that fixed!
I have to say that non-replaceable batteries was one of Acorn's dafter ideas!! Still, who thought we'd hold onto these things for so long!
I reckon I shall be using the RISC PC a lot more now I have re-discovered Spheres of Chaos!!
Thanks again for your help and suggestions!
Regards
Daniel |
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