Need help repairing a Boss Katana 50 MK1

[heekyet]

I am having a similar fault with my Boss Katana Mk 1. The earphone output is working but the speaker is not sounding. It looks like I the TDA7293 may be the problem too for me. I'll start with that based on @icefire's experience.

[Hanger-18]

Hey I'm hijacking this slightly. I just got a used KTN-50 and it wouldn't come on. I checked the glass fuse and it was OL. I jumped it with a different style fuse and got power and lights. Still NO SOUND. I ordered new glass fuses and the circuit board ones. I checked the output at the headphones and no sound. I will try to use the aux input to verify the power amp. Anyone have this happen??