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Gerson W. Barbosa · (This post was last modified: 09-04-2016 01:49 AM by Gerson W. Barbosa.)

(09-01-2016 11:52 AM)DJSCaver Wrote: Not sure if you guys can help or not. Many years ago I opened up my HP-33E (solderless) because it was not reliable.
It has been open ever since and I have recently decided to re–assemble it. But the three 8 pin ICs have fallen out of their locations and I do not know which one goes where. Does anybody know which IC goes where?

The three ICs are:
00031-80008 Silver (from the web described as RAM)

IMAI 0004 SGP785024

IMAI 0378483 SGP3

My HP-33C has only one 8-pin IC, ILB901-81251-SGP01. Here's the picture in case it can be of help:

[Image: hp-33c_zpszv5e6usw.png]

It was unreliable also (two or three sets of like LED segments would turn off frequently). I've just disassembled, cleaned and reassembled it. Apparently this has been fixed.

Best regards,

Gerson.

P. S.: A better picture for your purpose, from this very museum:

[Image: 30comp.jpg]