I bought this amp used about a years ago and since then I had no problem with it. About a month ago, it started to make some strange sounds when I turn the standby on and off. Now I get these weird noise every time I turn off the standby and it is much louder than it was before. I don't want to use it anymore because I am afraid to blow a speaker in my cab or to damage the amp more than it is right now. I know I should take it to an amp tech but I don't have a big budget for the repair and I can't wait 3 weeks (I called and they told me it's a minimum of 2-3 weeks) or more to get my amp back since I have a couple gigs coming in this month. I recorded a couple of videos of the problems in the hope that maybe someone here will be able to point the problem.
The videos where shooted with no effect in the signal chain. Guitar straight in the amp and the amp straight in the cab.
So here is what happens :
The amp was turned on and I had let it heat for about 5 minutes, when I turn the standby switch to off, this is what happens :
https://www.youtube.com/watch?v=leNl7PqprEw
https://www.youtube.com/watch?v=oxd2t0Vb9sg
This loud BANG is at the same loudness at any level.
When the standby is off, I can play with the amp without any problem. I don't get any weird noise or hum or anything, it's just working great for about 20 minutes.
After about 20 minutes of playing, the level of the sound drop and the post knob does not change the level of the sound anymore (it will sound the same at 2 and 7) and I get some weird static noise that fade in and out.
I tried to shoot a video of that fading in and out sound but it seems that my phone have a noise gate in it and it did not capture the sound very well. When this problem happens, if I turn the standby on, I get a LOUD static noise fade out.
Post knob not doing anything, weird fading in and out static noise + loud static noise at the end :
https://www.youtube.com/watch?v=kupXv4obUKQ
If I turn the standby off again, I get a loud static noise fade again and the post knob is still not doing anything. I have to close the amp for about 10 minutes to let it get back to normal (by normal I mean just doing the loud bang thing haha).
https://www.youtube.com/watch?v=OXD3YsRiuKY
Also, I did notice that when the post is at 0, I still can hear my guitar through the amp. Before all these problems started the happen, when the post was at 0 the amp was completely silent.
https://www.youtube.com/watch?v=90GMszuEGBA
I hope someone here will be able to help me out ! If you guys know a better place to ask this kind of question please tell me. And by the way, sorry if my english was not perfect, it is not my primary language.
Thanks !
The videos where shooted with no effect in the signal chain. Guitar straight in the amp and the amp straight in the cab.
So here is what happens :
The amp was turned on and I had let it heat for about 5 minutes, when I turn the standby switch to off, this is what happens :
https://www.youtube.com/watch?v=leNl7PqprEw
https://www.youtube.com/watch?v=oxd2t0Vb9sg
This loud BANG is at the same loudness at any level.
When the standby is off, I can play with the amp without any problem. I don't get any weird noise or hum or anything, it's just working great for about 20 minutes.
After about 20 minutes of playing, the level of the sound drop and the post knob does not change the level of the sound anymore (it will sound the same at 2 and 7) and I get some weird static noise that fade in and out.
I tried to shoot a video of that fading in and out sound but it seems that my phone have a noise gate in it and it did not capture the sound very well. When this problem happens, if I turn the standby on, I get a LOUD static noise fade out.
Post knob not doing anything, weird fading in and out static noise + loud static noise at the end :
https://www.youtube.com/watch?v=kupXv4obUKQ
If I turn the standby off again, I get a loud static noise fade again and the post knob is still not doing anything. I have to close the amp for about 10 minutes to let it get back to normal (by normal I mean just doing the loud bang thing haha).
https://www.youtube.com/watch?v=OXD3YsRiuKY
Also, I did notice that when the post is at 0, I still can hear my guitar through the amp. Before all these problems started the happen, when the post was at 0 the amp was completely silent.
https://www.youtube.com/watch?v=90GMszuEGBA
I hope someone here will be able to help me out ! If you guys know a better place to ask this kind of question please tell me. And by the way, sorry if my english was not perfect, it is not my primary language.
Thanks !
