Markus did a repair on his scope:
yesterday I decided that it was about time to replace the bad performing rotary encoder for the time-base of my RIGOL DS1052E DSO.
The encoder seemed to work fine when I bought the scope, but after a few weeks it already started to change the time-base quite randomly when turning the knob.
So I bought two rotary encoders from ITead Studio. They have 20 pulses per full rotation while the original ones only had 12, but that was ok for me. The shaft is about 1 mm longer, but it does not make that big of a difference with the knobs on them.
Via the project log forum.
Same problem, Purchased from a grey (dealexcel) arrived ok and working, only used it a few times. Timebase started to twitch and soon started to switch randomly. Rigol should fix this, or is it a chinese trick to dump broken scopes and then tell users sorry, you didn’t pay full retail.
I will never purchase another chinese piece of crap test equipment.