[Racal] R1792 Display lighting tip required

[Peter Worrall, G4GJL]

I just recently became the owner of a backlit RA1792.

Some of the bulbs have blown, and the previous owner let me have a pack of 
replacement bulbs.

Problem is how to get the display modules out in order to access the 
bulbs....

I realise I have to remove the front panel first, as the maintenance manual 
says this. It is rather scanty on how to proceed beyond that!


Any tips appreciated.

Pete