Dear GalaxyGuy
Its working! As you suggested the backplane was not secured in a symetric manner and wobbled. Whoever put in the keypad made a (hidden) mess when (s)he drilled the hole. Fixed the mess, screwed a horizonally aligned short piece of wide elastic band into sacrificial hole, checked...
Thanks ... although your reply already shows I'm naive!
I have the engineer code (really old one apparently) but why do I need it? What will I need to do once works are completed?
Looking at powering down videos at the moment. I assume I need to do that?
Also, perhaps an incorrectly configured...
Security company say my keypad needs replacing (after a Tamper 0 error). They want to charge £200 to replace. I think I can buy a new keypad for £30 on Ebay. Is it a simple process of swapping the keypad on the current backplane (checking the wall tamper) or am I being too naive?!