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Sinclair Calculator Repair
Post: #1
07-14-2010, 08:25 AM
John Robinson Offline
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Hi All, I know this is not HP related, but I didn't know where else to turn. I am looking for help to repair a Sinclair Cambridge Scientific calculator, can anyone point me in the right direction please ?

Thanks
John

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Post: #2
07-14-2010, 10:24 AM
Frank Boehm (Germany) Offline
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Sorry to say that, but the Sinclair calculators were never constructed to last (nor to work as expected when new) - I'd clean all key and switch contacts and check battery contacts for corrosion or cold solder, too. A really "dead" unit is unlikely, but expect bouncy keys...

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Post: #3
07-14-2010, 09:17 PM
John Robinson Offline
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Thanks for the tips Frank, I will try them out. I do agree with you about Sinclair calcs being "a pile of ...", but this one is my wifes from her school days, so I wanted to get it going for her :-)

Cheers,
John

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Post: #4
07-14-2010, 10:47 PM
Palmer O. Hanson, Jr. Offline
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Quote:
I do agree with you about Sinclair calcs being "a pile of ...",

That's a little harsh. Ammong other things the Sinclairs were truly shirt pocket size. No need to speculate on just how big the pockets in Bill Hewlett's shirts really were. And I think that the four volume library of programs for the Sinclair Cambridge Programmable was a impressive work for the time.

I have three. I will suggest one thing. You need to be sure that the 9 volt battery is in good condition. A battery which will run TI-30's, Business Analysts, etc., without a problem will give you fits in a Sinclair.

They are slow by today's standards Two solutions for Gene Wright's addition test are

Sinclair Cambridge Programmable

Count:  355

Code:  rcl + 1 = sto gto 00

Sinclair Cambridge Proigrammable

Count:  384

Code:  + 1 gto 00
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Post: #5
07-19-2010, 02:09 AM
John Robinson Offline
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Hi Palmer,

Thanks for the tip about the battery. I think you're thinking of the Cambridge Scientific Programmable which took a 9V battery. I had one of those, but gave it away :-) The one I actually have now is the Cambridge Scientific (non-programmable), and it's powered by 2 x AA batteries, but taking your advice, I'll make sure they are fresh.

BTW, I have total respect for Clive, and his ideas, just sometimes the implementations lacked the quality they deserve - shame really.

Cheers,
John

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