Humming and smokey smell can often mean output transformer, dont try that one yourself. Unfortunately, its not a cheap repair. The part alone can be about 70 nicker if its anything over about 30 watts. Valves dont generally smoke when they go, they are like light bulbs, they just go. Transformers generally smoky smoky. Expect to pay round the £50 mark for the guy to do the job.
(i work in a guitar shop, but up norf so im no use to ya)
Humming and smokey smell can often mean output transformer, dont try that one yourself. Unfortunately, its not a cheap repair. The part alone can be about 70 nicker if its anything over about 30 watts. Valves dont generally smoke when they go, they are like light bulbs, they just go. Transformers generally smoky smoky. Expect to pay round the £50 mark for the guy to do the job.
(i work in a guitar shop, but up norf so im no use to ya)