Currently Being ModeratedNov 26, 2011 12:20 PM (in response to MGblade)Re: elektrik noise from within dt25 head
The noise could be due to a number of things. Mine doesn't do this.
Does this happen in Standby or only when the Standby switch is in the ON position?
Does the sound also come through the speaker?
Can you see anything 'sparking' through the grille at the back of the amp?
Can you see smoke or smell burning?
My guess is that it's probably nothing too serious and it may be the mains transformer vibrating slightly until it warms up and things have expanded and tightened up to remove the source of the 'rattle', however if you are concerned about it - and I guess you are - then you should book it into a Line 6 Authorised Service Centre and get it checked out by a qualified technician.
Of course if you do see smoke or smell burning, then the problem is serious and you should get it checked out immediately.
Currently Being ModeratedNov 26, 2011 12:51 PM (in response to Nick_Mattocks)Re: elektrik noise from within dt25 head
it happens in stby and in operating mode, the sound doesnt come through the speaker, no sparkling signs on the back, and no, no smoke or burning smells,
it,s not a rattling sound do, its clearly a classic elektrik buzzing/crakle sound, like when a fly gets trapped in those elektik fly catchers, (don't know the english name of those) it,s not verry loud do, standing 2 meters away from the amp you won,t hear it.When close to the amp the sound clearly comes from the left(back) near the power input, The amp itself operates perfectly no issues at all,
Currently Being ModeratedNov 26, 2011 1:45 PM (in response to MGblade)Re: elektrik noise from within dt25 head
Try a different mains cable in case the one you have is not making a good connection (but I'm sure you would hear evidence of this through the speakers).
The fact it happens in standby too means it isn't HT circuit related
Currently Being ModeratedNov 27, 2011 1:53 AM (in response to MGblade)Re: elektrik noise from within dt25 head
HT = High Tension (or high voltage). The HT circuit is switched off when the amp is in Standby so there's no signal. the tubes are only being heated in Standby. If the problem were HT circuit related then the Standby switch would need to be ON
Currently Being ModeratedNov 28, 2011 1:21 AM (in response to MGblade)Re: elektrik noise from within dt25 head
When I bought my DT25, the first one I tried had that same fault - slight buzzing noise coming from the back of the amp. Fortunately the shop were very helpful and had a few in stock, which I was able to compare (I actually tried 4 different ones). The noise isn't there on the amp I ended up with.
I'd return it for an exchange.
Currently Being ModeratedMar 26, 2012 4:21 AM (in response to MGblade)Re: elektrik noise from within dt25 head
i found the seloution to the problem, after bringing it back to the store, line 6 service centre gave the store permision to fix the problem them selves, got it back two days later, and for a week the noise was gone, but then it appeared again, i took the amp out of the head to check where the sound was comming from, by accident i saw that 2 of the 4 transformer ( the one near the power cable) screws where a bit loose, i tightened them and gone was the noise, it never apeared again,
maybe others have the same problem, this might be the solution.