a couple of units with a LCD with black areas.So far 5 out of 17 have this problem, in several flavours: I think it doesnt make sense to continue with the old part - but let's see the durability of this new one for a while before making the change and discontinuing the old part. The design so so that when the screw enters, it presses harder to the sides, the same way a wall expansion screw works (plastic+screw). I have used exclusively our new piece, which penetrates below the keyboard circuit surface and grips on the sides. The third most typical problem is broken lower screw posts.The corrosion also spread to the main board in several of the cases, but in all units I was able to remove it with our trusty Caig Deoxit. The second more frequent is corroded battery bay connectors.Most frequent damage is broken upper screw domes in the back of the calculator.
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(continuing with the story: after the Spice series, the lower range was inherited by the Voyager series - for many, the most perfect calculator design ever, with the HP12c and the HP15c as the main examples)ĭuring the last week I have tried to repair (or install CL circuits on calculators) many calculators: 17 of them, of all types and flavours!Īgain, repair statistics are quite stable, but there is a jump between 1st and 2nd: Ignacio Sánchez suggested to design an adaptor that used two AAA batteries - where the size challenge does not exist. The original rechargeable batteries wear down, but the problem for the replacement is that the normal AA size is 1-2 mm too long for the machine - and you break the machine in the medium term. One of the issues that plague the HP Spice is the battery bay. Therefore, these machines have higher fatality rate than other models. In opinion of many HP experts, too many corners were cut to manufature them - several internal connections rely on pressure exerted by the screws that close the box - while in previous units the box screws did not have circuit integrity functions. The Spice machines were designed as low cost compared with the HP65-HP67 series, and as replacement of the Woodstock series. The Spices were the HP32E, HP33E, HP33c, HP37E and the HP34C - the top of the series.
We are now designing an adaptor to put two AAA batteries in a Spice machine.
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