On the last page of the HV-110 manual, it shows that you can set the switching frequency from 13kHz, 26kHz, and 52kHz. Was this setting changed, or have you tried different settings?
On the last page of the HV-110 manual, it shows that you can set the switching frequency from 13kHz, 26kHz, and 52kHz. Was this setting changed, or have you tried different settings?