BEWARE Cheap USB scopes!
Posted: Tue Feb 17, 2009 2:51 am
I had my DSO-220 scope hooked up to a 12v signal(testing a boost controller) for a while and all was well when all of the sudden Windows dropped the device(you know that sound when you unplug something). To make a long story short it fried itself($220) and my USB-to-Serial adapter. It's a miracle the ports on my laptop are still good.
After I took it apart there was the familiar but faint fried smell, but I couldn't find anything visible wrong with it. During inspection I found all sorts of diodes that were added after the board was designed/built.
I had it set to DC but was using + ground, that shouldn't have caused the melt down should it? Says 36v max.
-sean
After I took it apart there was the familiar but faint fried smell, but I couldn't find anything visible wrong with it. During inspection I found all sorts of diodes that were added after the board was designed/built.
I had it set to DC but was using + ground, that shouldn't have caused the melt down should it? Says 36v max.
-sean