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A mate of mine owns a Blackstar HT-5 Combo in the Ltd Oxblood colour, amp has been working fine on a daily basis, he turned it on today to no sound, then when flicking the gain switch a massive deafening hum can be heard. As I'm a total spaz with anything amp based I can't offer him any sound advice apart from writing to Blackstar, just kinda hoping someone on here with a bit of amp knowledge would have a rough idea what the problem may be and potential cost of fixing the problem.
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Dave, much appreciated mate, I'll pass the info onto him tomorrow. We're only 7 miles from Swansea so he'll be okay with that one, Hopefully it'll be a flukey one like the output jack as you suggested!!!
Cheers again Rich
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Have just received a video off my mate of the amp, it's now making a ticking noise like a heartbeat! Anyone know how I upload a video here?
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http://tinypic.com/m/hwiwjc/3
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[URL=http://tinypic.com/m/hwiwjc/3]View My Video[/URL]
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I've never heard anything like that from my HT-5. What has your mate been doing to it to get it's heart pounding?
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They're actually very helpful even if the amp is out of warranty, and may be able to point you in the right direction even if you don't want to send it back there.
If you have a spare 12AX7 it may be worth trying that first, but I probably wouldn't buy a 12BH7 unless you're sure it's that - as Dave said it will need a tech to fit and bias it really.
"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