HP42S Changing Back to Clear

[DanM]

(09-02-2020 01:44 AM)Craig Bladow Wrote:  The detaching of the piezo from the original back seems to be somewhat of a irreversible step due the plastic stakes being melted over the edge of the piezo. How is it attached to the clear back?

The detaching wasn't too bad, and is not completely irreversible. I used an Xacto knife to slice off only the portion of the melted-mushroom head which went over the disc. That leaves enough material remaining on the rest of the mushroom head that one could melt it and push some back over the disc to hold it in place good enough.

The clear back has 4 plastic spikes surrounding the space where the piezo should go. I heated them up with a heat gun, and smooshed 2 of them enough to hold the disc in place. I couldn't do as nice of an industrial job of it as HP did, but mine should hold it in place throughout the ordinary stresses i expect it to receive while being used in my care.