OK until today was working perfectly. Now today no sweep at all.
After warm up two spots can be seen. These spots can be centered both horizontally and vertically. But on every position of the time/division control does not move the trace across the screen. Also I am suspicious that some thing might be wrong in the Y circuits. Putting a 9 volt battery across the CH1 probes does not move the spot vertically. Checked the important voltages and all seem within spec.
Help with further troubleshooting would be appreciated.
Tony
After warm up two spots can be seen. These spots can be centered both horizontally and vertically. But on every position of the time/division control does not move the trace across the screen. Also I am suspicious that some thing might be wrong in the Y circuits. Putting a 9 volt battery across the CH1 probes does not move the spot vertically. Checked the important voltages and all seem within spec.
Help with further troubleshooting would be appreciated.
Tony