Re: Hameg HM307-3 Cleaning and Repair
Observations for WME_bill (TB off, AT off and no signal):
1. The brilliance does alter from a low state to a high point as the potentiometer is turned. Overall, the trace is unviewable in normal lighting conditions.
2. Yes, the focus control does change the spot from sharp to fuzzy.
3. There is no change in brightness when the hor. ext. is pushed in/out. The spot just moves a bit.
Attached is a photograph of the spot I'm getting.
|