HP48G assistance request

[unixronin]

I have a HP48G graphing calculator on which the on/off/cancel button has gone very flaky.  It will no longer power on just by pressing on -- at minimum, a warm-start (on-c) is required; I can't power it off -- I have to wait for it to shut itself off; and I can't cancel operations or clear error messages.

HP no longer offers service on the HP48G, and it's pretty tough right now to justify the cost of replacing it with a HP48GII (around $110) or HP49G+ (around $150).  Does anyone know of a repair procedure for a flaky HP48G key (above and beyond the non-trivial problem of getting the never-intended-to-be-opened-after-manufacture case open)?

Comments

[ilcylic.livejournal.com]

No, and my HP48G doesn't work either, anymore.

So I have to make do with 'dc'. Which doesn't really cut it some of the time.

-Ogre