Jell Systems can carry out a wide range of tests to find the state of health of computer systems and their component parts. Good diagnostics are the key to good repair work. In line with the majority of other electronic repair workshops it should be noted that most fixes are carried out by replacing parts. This is due to the highly complex "Black box" nature of computer hardware. Areas serviced: Central Glamorganwww.jell-systems.co.uk1 Fairways View Talbot Green, CF72 8JG