HP 32E - Zeros in display / blank display.

[PANAMATIK]

(03-10-2015 09:22 AM)brouhaha Wrote:  

(03-10-2015 02:50 AM)vikram86 Wrote:  The jury is still out on how that single pin was broken clean off the IC.

I've seen that same failure mode on several of the press-fit 30-series calculators.

I have a non functional press-fit HP-33E where the 1820-2105 processor Pin 7 is intentionally cut, because there is no signal trace leading away from this pin. But there is another 8-pin chip labeled 00031 A0008SGP where Pin 8 is completely off, no chance to solder a wire. So I have to give up repairing this calculator the easy way?

At that unfortunately I was clumsy when opening the case and the three 8-pin chips were falling out suddenly, so I don't remember in which order they should be replaced. They are labeled MA10003, MA10004 and the above.

Can anyone help?

Bernhard