Marshall AS-100D plugged to 220V instead 110

[csnjava]

8 years ago I bought a Marshall amplifier in Sao paulo, Brazil, and used only for a few days. I packed it in its plastic bag in my home and kept safe until my return. Sao Paulo mains is 110V. In some cities in Brazil we use 220V as it is my case.

Now I am back to my city home which mains is at 220V. I don't remember using power transformer 8 years ago. The first thing I did when I came back in Brazil was to plug my marshall amplifier into the mains. I heard a faint hum noise but nothing more afterwards. The amp sounds dead as there is no static when the classical guitar cord connected to the amp is swung/bounced.

I am wondering if I damaged the amplifier or just a part of it. That is, I wonder if there is a fuse to protect for such an idiotic action. Apparently there is no visible apparatus to suggest changeable fuse.

I don't want to send to some adventurer who claims to fix and make it worse. On the back of the amp says not to open it. What can I do? Can I open it and do something?

[Enzo]

Every amp has fuses - some are outside in fuse holders, and some are inside in fuse clips. Each product is different.

Your amp may have simply blown a fuse or some damage may have resulted. We won;t know that until we put a new fuse into it and try it on proper current. The momentary excess voltage it experienced could have damaged things like capacitors inside, but perhaps they are fine. Start with new fuses.

[oc disorder]

and before you plug it in make sure it says 220/230 volts on the socket
not 120v as in the attached picture.

[csnjava]

The replacemente o the fuse was just enough.
Obviously I went to a qualified technical assistance.
Thanks a lot!