Tony Firshman wrote: > The QL power supply can cope with both Gold Card and Qubide. > However this arrangement is electrically unsatisfactory with the QL > motherboard, as there is a lot of electrical noise. > Using a PC power supply, which is certainly possible with this > arrangement, will not help reduce noise. The motherboard will need > slight modification. I do not recommend connecting just to the 9V line > on the expansion connector and looping across the QL regulator, as this > is then a very long path for the 5V supply. > > Tony
And this 'Noise' problem was the reason for the popularity in the USA of the "Bent" modifications to the QL's. Frank and I (while we were Mechanical Affinity ) used to perform a lot of these modifications of QL's we were asked to repair. There was a whole list of little things we did to the QL motherboard to address these issues. The "Bent" modifications were developed by a Technition who worked in Satellite communications R&D and also did product stress testing of electronics for NASA. -- Paul Holmgren 2 57 300-C's in Indy Hoosier Corps L#6 -- Paul Holmgren 2 57 300-C's in Indy Hoosier Corps L#6 _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
