#1
The title might seem slightly misleading, but to make a long story short a good friend of mine recently broke his Ashdown Mag 300 head. He has since got hold of a new head and well, a whole new rig but that isnt important.

Im just curious to what can go wrong with a head? There was no sound coming from it what so ever if i remember correctly, what could be wrong with it and could it be repaired without spending too much money?
#2
There are a lot of things that can go wrong with an amp. Smaller problems like a blown fuse or a faulty wire in the power connection can be fixed for a few dollars. Bigger problems are blown power output transformers and speakers in combos which can cost hundreds to repair. Since I believe that the Ashdown Mag 300 is solid state, you can rule out any bad tubes.
#4
Take it to a tech. Don't go dicking around inside amps if you don't know what you're doing with electronics. You can do even more damage to the amp and more importantly, yourself.
Basses:
Fender Precision Bass
Fender Jazz Bass
1967 Fender Coronado Bass II
Warwick Star Bass
Squier Precision Bass TB
#5
Yeah, ive gone into things all guns blazing and ended up making things 10x worse... Will shops charge to find out whats wrong with it? I imagine they would, but how much will it be roughly?
#6
If there is power to any of the indicator lights, you can rule out a blown fuse or faulty wire. You could hook up the head to a new cabinet to check that it drives it, which would rule out any blown speakers in the cabinet. Output transformers should be tested with an ohmeter by a professional repairman. They are extremely dangerous if you don't know what you are doing. There could also be other problems with a solid state head, such as fried electronic components in the circuit board, which could be repaired, but would probably cost about as much as purchasing a new amp head.
#7
Most amp repairs I've had done have cost under $200. A bad output transformer or circuit board could run two or three times that. It's usually about $50 to have a repairman look at it, which is deducted from the cost of the repair if you decide to have it done.
#8
Considering a second hand one of these is averaging about £200 i doubt its worth paying to get it checked out, the lights still work so i know its not the power to it.
#9
Could be something as simple as a dodgy input jack though. Get a few phone numbers and ring around asking how much they charge for a diagnosis.
Basses:
Fender Precision Bass
Fender Jazz Bass
1967 Fender Coronado Bass II
Warwick Star Bass
Squier Precision Bass TB