Instead of a step-by-step guide, I just show you a series of screen shots of the procedure. In fact, dismantling the Psion 5mx is quite self-explanatory, I had the feeling of playing a modern Lego.

Remove the screws first, and of course, the CF card. Because all the parts will be without power current, you should backup the whole C: drive into a folder on the CF card before you start anything.

Carefully remove the bottom part of the case. Pay attention to the dictaphone buttons and slightly pull the keyboard out.

All the Psion 5mx is on this small motherboard. You can see the memory chips - 2 x 8 MB. The ARM cpu is on the other side. I expected the spring mechanism for the pen to be complicated and it is just a single peace of plastic. But works very well, I played with it for a couple of minutes to discover how it really works.

Now remove the motherboard by removing these two screws and the speaker cable. Pay attention to loosen the battery springs, takes a little trial-and-error to find the way how it pops out.

The screen spring has to be clicked out, too. I started in the middle for both, then let them turn out on the edges.

Simply pull both hinges to the sides to detach the keyboard.

Now we have the screen detached from the rest of the machine. Here you can see the bottom plastic part of the screen case has been already modified during the previous yearly change...

Remove the plastic on the bottom, then slide the screen out.

Remove the metal backplate and the screen cable is revealed. Note that the S5 has a differently shaped screen cable. I tried to locate the broken wires, but even with a magnifier, I wasn't able to see where it became discountinous. But with the new cable these problems were gone, so it must be like that.

Before mounting the screen back, I reinforced it with several layers of Scotch on the bottom side first. This is a better 'mat' type of Scotch tape.

Scotch on the soldering.

Then I put the protective plastic layer back and applied even more tape.

I enlarged the hole on the bottom plastic of the screen case to reduce cable wear, simply used a strong nail file.

I also modified the top part of the case. I think this is the most important part, which tears the cable the most when the screen lid is opened up.

This is the plate between the keyboard and the motherboard - still material to remove.

The cables connected to the motherboard - lots of Scotch to protect the cable. I've found this position to be comfortable to be able to attach the cables back.

When closed, you can see now a big nice hole - hoping the cable lasts longer.

I also tightened the metal-spring of the backup battery, simply twisting it up to hold the battery stronger.

There is a cable somewhere inside. :-)