Hi Leo
No worry. It happens.
Sure I will check the component.
I confirmed that the scope is still working with external supply.
But before going further I want share with you my experience during the testing of scope with limiter bulb.
1. That day you suggested to put on the scope without limiter bulb. And you know the outcome.
2.It seems that even with shorted q9070
I could hear the same high pitch(with limiter bulb lighting)
3 changed q9070 and put on the scope(with limiter bulb). This time I had flashing light and there was power led at front panel also flashing. And I could hear the pitch at the same frequency as of bulb or led flashing.
Put off the scope. Again put on the scope with same result. Third time when I put on the scope q9070 damaged again. Any logic behind this?
Thanks.
Saroj
