HP67 repair - help identify capacitors

[teenix]

I assume you mean the magnetic head came loose, so yes it would have to be aligned the same way as when it was manufactured, which includes its vertical position in the plastic housing so that it will have the correct pressure against the card as it passes over.

The capacitor is connected across the battery which is about 3.75 volts, so 10 or 16 volt rating should do. The higher the voltage may mean a larger sized part.

cheers

Tony

(07-06-2023 07:27 AM)isanchez Wrote:  Dear Tony,

thanks for the information. I am repairing an HP67 with the same problem.
In a first sought I realised the card reader header module was loose. I glued it back, but I suppose that the "error" message can be in a misalignment of the header. I find this could very sensitive to a good alignment, am I right? I am willing now to replace the whole part (plastic + header).

If I do not succeed, I shall try the capacitor replacement. A basic simple question: what do you recommend for the voltage of the 47uF capacitor? sorry for this question but I am not familiar with this electronics at all.

Thanks in advance and kind regards.

Ignacio