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Pioneer series internal photo (17BII, 27S, 42S)



#3

Hi, there.

Just now, I repaired my 42S which had dead '+' key by transplanting the membrane switch from broken 17BII.

Some photo had been taken while repairing. Please take a look on

HP-42S membrane switch transplantation
and also
HP Pioneer series calculator internals

Regards,

Lyuka


#4

Absolutely fantastic!

How did you restore the bond now that the heat stakes were cut. Glue, screws, ...

Thanks, Geoff


#5

Geoff

I used a
15W miniature soldering iron to re-melt the heat stakes, though there may be a better method.

Regards, Lyuka


#6

Hello Lyuka,

very nice pics!

I had a trouble with a very bad 32SII 3 years ago and I went that way ( disassembling all the Keyboard ) I did it very careful...

But after that the 32SII never worked OK again...

Regards!

Nacho

#7

I should have included that option! It is the one I use the most, sometimes adding a lump of donor plastic.

I also filed my iron to a fine point with a convex shape to push the melted rivet up and out.

Cheers, Geoff


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