Blackstar HT40 constant noise

[gandaralf]

Hello!, here my message in the bottle

My amp sadly start doing constant noise, -independent of any volume level -, just a low freq hum that stops...

[GasMask52]

Hey all once again ,

A day after jamming with my Marshall Valvestate VS100 (That was working like a charm) , I noticed a constant sooshy-windy...

[markyb]

Hi all, it's been 14 years since my last post here, which I can't quite believe. But hey.

I have a little 1x12 Laney LC15 which I bought spares/repairs...

[GrantsV]

Hi,
I have a 6505+ amp and the Crunch Channel only whistles and howls like an old kettle. The pitch of the whistle changes as the gain knob is altered...

[mikeskory]

Good afternoon. Working on an old Peavey XR600 for the second time. I have it working now but I'm not satisfied that I'vr found the real problem. I supplied...

[marc9889]

I have a noisy / buzzy / hissy sound coming from my Randall RRM 2-80 power amp. It's loud enough to be obnoxious, and definitely didn't come that way from...

[sarv]

I'm testing out a simple clean boost circuit that's just an op-amp in a non-inverting amplifier configuration (see schematic). I'm getting an issue with pot...

[Tom Bridges]

Hi, ever since I bought my AC30C2 I've had a variety of issues regarding noises, tubes and furthermore. Now I'm having a volume drop, like the amp is running...

[rphardy]

I have a Fender Acoustasonic 30 DSP. When I activate the chorus the chorus light pulsates and a clicking sound comes through the speaker. The speed of the...

[blindboybenton]

Good morning

I do repairs for a local guitar shop and they sometimes change the tubes and bias it themselves, so they don't have to pay me...

[trashdinner]

I've got a pair of Yorkville YSM1p studio monitors and they both started to hiss after a couple of second/minutes. I tried ground lifts but nothing changes....

[Amish Mel]

I have a vox ac4c1-bl and I added the bitmo voxmo15 kit. Afterwards I tried it out and it sounded great, no problems. It worked as it should.

...

[Shawnobi]

Hope this is the right forum. Hoping for a little advice.

Just started a noisy band. 2 guitarists, bassist, drum machine. The other guitarist...

[Trick]

Hi, I'm having a noise issue using a 65amps Ventura. When i use the fx loop this ground type noise becomes more amplified. I've demonstrated the noise in...

[Bobburkard]

Hi folks,
This is my first time here, and I am neck deep in guitar builds, and a very cool amp build. I have bought two Vox AC4 amp chassis. They...

[PfeifferElectronics]

I have a Marshall MG15 mini stack that started to make noise on the gain channel. If I move my guitar around from side to side it changes the volume of the...

[PfeifferElectronics]

As soon as the amp is turned on, a loud, distorted hum comes out of the speaker. Front control knobs do nothing, which makes me think it is in the power...

I have a Carvin X-60E tube amp that makes an awful distorted loud howling noise. It plays fine for maybe 30 seconds then the noise starts abruptly and is...

[jussi]

Hey,

What do you think about the placement of the trannies, choke and tubes in this layout? Any obvious hum-makers? Should I use bigger chassis?...

[PfeifferElectronics]

Hi,

I've been working on this Pro Reverb build for a few months and I've got all the bugs worked out except this last one that really has me...

[donr]

I have a Spider II that I bought from a friend.
The issue I'm having is that while the amp is on it makes popping noises, will increase volume briefly...