I bought a second hand oscilloscope a couple of months ago -an old analog Hitachi- and it's been working well so far; with the exception of the trace intensity being a bit low and a couple of buttons/pots not making good contact some times. Well, the case is that I was just using it, and suddenly the trace got quite bright; the intensity got way higher than ever before on its own.
I don't know what to make of it; if either the intensity got fixed on it's own after 2 months, or if something was just damaged. I mean, if the oscilloscope arrived with the trace at this intensity I would have thought of it as normal; as I can bring it down to normal with its control. But since it has been low for 2 months, and suddenly went up on its own, I though that maybe some component has been damaged (or came already damaged).
I would appreciate your thoughts and any advice on taking measures to prevent any damage or fixing the problem.
Thanks in advance.
I don't know what to make of it; if either the intensity got fixed on it's own after 2 months, or if something was just damaged. I mean, if the oscilloscope arrived with the trace at this intensity I would have thought of it as normal; as I can bring it down to normal with its control. But since it has been low for 2 months, and suddenly went up on its own, I though that maybe some component has been damaged (or came already damaged).
I would appreciate your thoughts and any advice on taking measures to prevent any damage or fixing the problem.
Thanks in advance.