On Saturday, November 16, 2013 9:15:26 AM UTC-8, wrote:
"If this happened suddenly (..."



Good point. We do not know if the guy just got the thing or what. Almost any problem with the caps comes on gradually. It is quite rare that one goes all the sudden. If it does it is usually completely open or shorted, in either case there would probably be no deflection at all.



Actually a model number might help. I got two databases (paid) with a whole bunch of symcures. A print would be great. The thing might not even have an output coupling cap, which would mean the problem is likely the bottom output. (in IC or not)



On the other hand, the ramp cap associated with the vertical driver can also do that. Sometimes those are tantalum and they can fail just like that on occasion.

The OP did post the model number in the original post: Nexxtech model 1612002.