HP67 repair - help identify capacitors

[isanchez]

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