Fender Super Champ XD No Power

[r4m]

I have a Fender Super Champ XD that won't turn on. No pilot light or anything. The fuse looks good. The wire inside is totally intact. No burns on filament or glass. Amp smells like smoke. I have forgot to turn it off several times. And been on for days at a time. I don't know much about electronics. Could it be a tube, transformer....etc I hate to lose this little guy! It is the perfect practice amp.
Where to begin? Any help would be appreciated.
Thanks.

[garytoosweet]

Do you have a multimeter and basic knowledge of how to use it?

[r4m]

I have a multimeter but only used to test cables.

[Helmholtz]

Refrain from any operations/measurements in a live amp if you don't have experience/training with lethal voltages.
You will probably also need to be able to read a schematic.