Originally Posted by: craigbrown1805I've just taken ownership of a Katana 50w mk1 that I bought on eBay. initial impressions are that it's great with loads of flexibility and features, especially for a home player such as myself. However, the moment I push it past the first couple of notches on the 0.25w clean channel, I get a notieable humming sound, and when I turn on the crunch channel or push up wattage, it just gets louder and more intrusive.[br]I've tested the amp down at my work, just to see if it's my home's power supply, but the noise is still there. It tends to diminish when I hold the guitar strings, which makes me think it's a grounding issue. Is there a straightforward fix to this or should I look to send this back to the seller?
Have you tried a factory reset ?
1. With KATANA powered OFF, press and hold down the [PANEL] button then simultaneously turn the power ON, continue holding the [PANEL] button for 2 seconds longer and release.
2. Wait while the FACTORY RESET executes and completes. You'll see the EFFECTS change colors while the reset scans each category.
3. When the FACTORY RESET is complete the KATANA will return to a normal TONE SETTING/CHANNEL. Recycle power OFF and back ON again for normal play mode.
4. All settings of the unit will return to their factory set state for the last updated firmware SYSTEM PROGRAM VERSION.
