[Philips210]

Hi.

I have take a few pics off screen from the scope showing the faulty display. The front panel including green filter was removed so the traces appear to be fuzzy but in reality they're clearer than the pics show. In most of the pics, all but the last 2 of 10, there was no input signal applied to the Y input.

Pic (a) is with the timebase control set to 100ms/cm, note there's just a dot on the left of the screen

Pic (b) timebase set to 20us/cm

Pic (c) timebase set to 5us/cm

Pic (d) timebase set to 2us/cm

Pic (e) timebase set to 1us/cm

Notice the width of the trace is increasing as the timebase rate is increased.

More pics to follow.

Regards
Symon.