[sdiy] Which Oscilloscope to buy?

[KA4HJH]

>on both channels i got erratic deflections on the screen, even when input
>set to GND. no matter what probe i use.
>every now and then i can see the actual signal i measure - just for a
>second.
>
>these are the symptoms, however i don't know whats wrong. maybe a grounding
>issue? maybe i should open up the case at least, to take a look. DIY, right?

I once bought a Tek 465 for only $50 because one channel was dead. I pushed
the beam finder button a few times and the "bad" channel has worked ever
since.

Check all the switches and connectors and look for cold solder joints. It's
probably something mechanical.

-- 

Terry Bowman, KA4HJH
"The Mac Doctor"