Hi,
with the time-base equal or slower than 1ms/scale I noticed "blank outs" on the trace when I turned on the readout. The blank out are about 1mm in length at the same horizontal position where the text would appear. I can fix this issue when I replace the A5 board from my second scope. So the issue must come from the A5 board.
I am requesting help to repair the A5 board - which I had fixed for leaky capacitor. PCB traced looks Ok and I replaced corroded resistor etc. Calibration was done as well. I read the theory of operation but I could not come up with a good trouble shooting plan. Maybe some does not switch fast enough.
Does anyone has a good idea to look for?
Bernd
