Just got new DSO203 …
HW Version 2.60
DSO203 Mini DSO Sys Ver. 1.51 I upgraded to Sys 1.52
DSO203 Mini DSO App (Plus A1) Ver 1.00 I updgraded to APP 2.53
Yesterday, I had the wave generator output connected to Ch A ok. Signal looked good.
(10x probe connected to Wave Out and 1x probe connected to Ch A and both probes connected together.)
Today, I cannot get any response on Ch A or Ch B from the wave generator or an external 1.8 Vpp signal.
I have reloaded the firmware, re-formated the USB drive to eliminate the parameter not loading error.
Forum search indicated possible damage to D6 or an op amp, but that was only related to bad waveform generator output.
I’ll open the dso to look for possible damage as soon as I have some time.
Any suggestions what this could be or possible remedies? Are there any input settings that could cause this?