Me Super - some problems

Hallo,
I bought 2 Me Super for price of 1 I know that 1 camera has this problems:
1) The loading lever is loose. (The seller told me that the 2 problems are contextual. He turned the loading lever, this is hanged and he forced the issue).
2) Mirror locked up. I think that this kind of problem follows the first.

Any ideas?

Thank you Luca

If he forced the wind on lever when the camera was jammed then something will be broken inside. The mirror lock-up is probably a symptom of the original jam - quite often it's caused by the upper shutter blades not dropping properly, when this happens the mirror doesn't drop as it's rigged to do so when the shutter closes. At the same time the wind on mechanism will be locked. You can try stripping it down, or just use the camera for parts as I did with a broken MG. That camera donated its focussing screen to an otherwise mint MG with a cracked one along with its viewfinder, and its wind on lever to a rare chrome MV1 which is now a very presentable example.

You can sometimes clear this jam by smacking the base of the camera against the palm of your hand, but it will come back. There is a site detailing the common causes of ME/ME Super jams, I think it generally comes back near the top of the results if you Google "Pentax ME Jammed".

Or you could just lift the rear shutter curtain using a small screw driver, and let it drop to see if that does the trick.

But, as DM says, the fault can re-occur.

The screwdriver method is certainly less painful to the hands!

The "give it a thump" method is however useful if it jams on frame 23 of a film, as you should be able to rescue the previous frames if you can get the shutter closed and then rewind it.

Note that because the previous owner forced the winder there will be other bent/broken parts inside, so just clearing the jam will not return it to working order.

Something I've recently tried (successfully) for clearing a jammed camera:

Remove the baseplate

Dribble a little lighter fuel into the mechanism that is revealed (at the base of the film take-up spool)

Prod the various moving parts gently with a screwdriver, sooner or later one will move and the camera will unjam

In the case of my recently-acquired ME this returned it to working order, albeit with a non-functioning frame counter. Bear in mind that lighter fuel is very flammable and shouldn't be used in confined spaces!