I am going to give soldering on a new crystal a whirl - I have cleaned up the contacts and the module is now displaying random digits - any soldering tips?
I have had one success replacing a crystal previously but I suspect it may just of been a case of beginners luck.
Previously I have had problems getting the solder to stick, I brought some liquid flux hoping it will help, I also brought, and built, a DIY thermometer kit to have a practice with and found it a piece of cake to solder onto a new PCB board, so I suspect its the surface contamination on the old boards which may be preventing the solder sticking.
UPDATE.
Found some excellent tips -
http://www.thedigitalwatch.com/Archives ... ip_002.htm