In article <bc2f1aed50.Chris@xxxxxxxxxxxxxxxxxxx>, C J Craig <Chris@xxxxxxxxxxxxxxxxxxx> wrote: [Snip] > Voltage measurement alone will not detect irregularities, you would > need a scope & probably have to have the meter calibrated,, I - the first person to identyify a power supply problem - made my diagnosis with a simple digital voltage meter. Mind you, in my case the voltage was hopping between two states, so it was obvious without a 'scope. I was going right back to my first lesson as a maintenance engineer "Before you do anything else, check the power supply". -- From KT24 Using a RISC OS computer running v5.16 --- To alter your preferences or leave the group, visit //www.freelists.org/list/iyonix-support Other info via //www.freelists.org/webpage/iyonix-support