dead lonestar classic

[scotspine]

my lonestar classic died on me last night. i switched on and .... nothing. the slo-blo has blown and so i am assuming that a power tube has gone. however, can anyone say for sure that the fuse rating in the UK is the same as in the US, viz 4amp? also, if i replace the fuse and switch on again, will the fuse not simpy blow again? how do i test which tube has blown if this is the case?
thanks for any help guys...

 

[jamme61]

Was the rectifier tube engaged when it blew the fuse? If yes, put it into solid state mode, replace the fuse and see if it blows again. If it still blows I would think the power tubes, too. As far as finding the bad power tube, the only thing I can think of is, when in stanby mode, you might be able to see which power tube dosen't light up. If ther's one that dosen't light up, you could pull that one and it's maching one too(two inside or two outside power tubes). If it was me and one of the power tubes went, I would replace them all. I'm not a tech but I hope this helps, good luck.

 

[Brewski]

Here's an amp debugging page that might help...

http://guitar.about.com/gi/dynamic/offsite.htm?site=http%3A%2F%2Fwww.geofex.com%2Fampdbug%2Fampdebug.htm