blown fuse... ? help?

stain.

[H]ard|Gawd
Joined
Sep 17, 2006
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This isn't on a computer, but I know some guys here can help ;)

I have a marshall amp, and the fan on it was really loud. twas a little 50x50x10mm fan, nothing fancy.

I have a 50x50x15mm fan I replaced it with. the difference in the fans are one is a 0.18A fan, the one I put in is a 0.16A fan. both dc12v fans. I put the fan connector from the stock fan on the one I put in (cheap linksys fan but works), and made sure to shrink tube the cables so there isn't any wires gone wild to short anything.

I put it back together and the fuse blows. grr. the only thing I did was unplug the fan, clip the wires and connect them to the right wire (positive to positive, ground to ground) and plug it in.

Instant blown fuse. I don't think I shorted anything as I didn't touch the main PCB or any auxilary PCB's while I was in there. the fans are relatively closely relate in their amp/wattage. Any suggestions?

:confused:
 
Are you talking about the 120VAC, main power fuse? Or does the fan have its own fuse? If you actually blew the 120, then check for shorts. There's no 12VDC fan on this planet that should blow a guitar amp's fuse.

Fans will draw additional current during startup. It's not that significant and it shouldn't blow any fuses.
 
94877308kw1.jpg


You can see the fuse right above the zip tie on the bottom of the PCB

That's the fuse. It's the only fuse on the amp, and I can't really make out much of what it says on it. I think it's a 15a fuse, but I'm not sure.You can also see where I clipped the wires and shrink tube'd them to get the new fan on.

t3, 15a L250v

That's what it says on one side... the other side has a bunch of symbols.. probably martian :eek:

I'm going to pick up a new fuse sometime soon and see if it blows again. if it does I'll put the other fan back on.
 
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