Psion Series 5mx

Main repair company apart from Psion used to be company called pos.

www.pos.com threw up a place that makes restaurant equipment , but worth a more detailed search.

A good 10 second squirt of WD40 in the innards of any machine is worth a try.

Anyone know where I can get broken Psions repaired?
The fault is: black horizontal lines in the screen display.
opening and shutting the screen makes it better/worse.

On my third and last Psion!

Thanks in advance.