Pentax P30 cameras - faulty

One of the P30Ts powers up and mostly works, but suffers from the common problem of needing two wind-ons to reset the shutter. It also has some crud in the viewfinder though not too bad.

The other two are a P30T and a P3 (which may have been an american model(?)) - they don't power up.

Guide price £free/offers plus postage.