i didnt notice the amp was 110v so i plugged it to 220v is it gone or ?

[R.G.]

Tom's right - the PT will saturate before the secondaries can hit double the input voltages, so the secondaries only got maybe 140-160% of normal. The PT primary will draw very large currents from the saturation removing its ability to hold off incoming current, so the AC mains line fuse will blow.

The question remains whether the insides will be damaged at whatever excess voltage they got. Can't tell from here. Replace the fuse, try it and say a prayer to the amplifier gods as you do it.

Ummmmmm... a low end amp without a mains fuse most likely has a dedicated fuse buried inside the PT. That's not a good indication.

[bob p]

Well, there's theory and then there's practice. I shipped a Bosch Lithium powered tool set and charger (USA spec) to someone in NZ. Unfortunately they did the pin converter thing without a step-down transformer, and they immediately blew out the power supply in the charger. Not a fuse, not the tranny, they blew out the passives and the actives. Never say never.

[olddawg]

If it's a brand new unit with a reciept and is a DNR/exchange warranty. Send it back to where you got it and say it never worked. They probably will just replace it without opening it if it doesn't smell like smoke. Lol.

[J M Fahey]

Unfortunately the amp is not in the USA and most probably was brought in as luggage ,so warranty even if valid (in USA that is) is unusable there.

In any case the amp is relatively simple so with some guidance a local Tech or Tech friend will be able to repair it.

Even if the transformer is dead, a relatively inexpensive generic 12+12V 1A (25 VA) one which is available anywhere will do.

The amp itself is very good, just needs a decent speaker.

[Chuck H]

The schematic that Jazz posted does not even show a fuse. (?)

No fuse is shown on the schematic, anywhere.
WTH.

Ummmmmm... a low end amp without a mains fuse most likely has a dedicated fuse buried inside the PT.

Did anyone even open the picture in post #2 ??? It clearly shows an inline fuse holder on the AC mains lead. No fuse indicated in the schematic not withstanding. I even circled it boldly and added text that says "FUSE".

I'm not actually ranting. I just thought it was funny.

[The Dude]

FWIW: The guy in this thread says his original fuse was 160ma.

Marshall MG10CF amp fuse recommended rating | MarshallForum.com

[Archie Speed]

Attached pic of the fuse info on a MG10CF. Same as Chucks pic, just different angle. Neat little amps, particularly on clean channel. Rich beyond the 6.5 spkr.

[rjb]

Attached pic of the fuse info on a MG10CF. Same as Chucks pic, just different angle. Neat little amps, particularly on clean channel. Rich beyond the 6.5 spkr.

Well, dammit, what's the value of the fuse?

[bob p]

Well, dammit, what's the value of the fuse?

Read the picture.

110V / 120V = T315mA L/250V

[J M Fahey]

Hey !!! donīt get mad at me !!!!!
I swear I didnīt see the fuse or its value !!!!!!!!!!!!!!!!!!!!!!!!!

[rjb]

Hey !!! donīt get mad at me !!!!!
I swear I didnīt see the fuse or its value !!!!!!!!!!!!!!!!!!!!!!!!!

Do you have another pic with the dog's tail between its legs?