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When you say you tested the internal fuse, did you test it out of the circuit or in place?
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Ebay mark7777_1
It is a bit of a gamble- what is the hourly rate for a tech?
£60?
Two hours work is more than half the price of the a new 50w Katana- at £190 new with a warranty.
I don't like chucking stuff away but the chance that it is a quick fix is outweighed by the chance of having to spend to fault find and then repair vs just buying a new one.
I'd probably sell the broken one on eBay as broken/for spares and then buy a new one with a warranty.
Or keep the old one for spare parts.
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If there's no apparent power getting through at all, there could be other fuses. Many modern Roland amps have sealed PCB-mounted fuses too, which are a nuisance to change. The real problem is that if it is a fuse failure, the chances are that it's the result not the cause.
Or it could be something else fairly simple on the power side, eg the switch itself - you really need someone to meter round the circuit with it turned on, if you're not confident enough to do that yourself. That should at least give you an idea if it's worth spending more time and money on.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
If so it probably means the power is getting to that, and the failure is on the secondary side.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
My 100w Katana died in the same way, just out of warranty. Given that it's an MDF cab with a pretty harsh speaker it just went in a skip I'm afraid.
It's a big ol' lump to keep as spares when the only usable spares are a handful of ugly knobs.
The general lack of repairability as witnessed by some here who have been left with unrepairable amps or in a difficult decision about financial viability of getting it looked at just feels wrong.
Its been a thing for a long time - but back then if your CMOS battery died in a first generation digital amp it had probably lasted 5 or 6 years at least.
I wonder if if the savings these companies make by not having a sensible support setup (aimed at cutting purchase price) will ultimately limit people’s preparedness to buy them at all
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein