It is driving me nuts, please help :(

[abyssofdreams]

So here's the thing:
I recently bought an ART Tube MP for my mic and a few weeks ago and it worked like a charm. For some reason though, the AC Adaptor/power supply isn't working anymore so I went out and bought a replacement, not the same manufacturer but it's got the same specs which are:

OUTPUT: 9V ~ 1000mA

I made sure that the output voltage is the same though the manual says an output of average 700mA would be sufficient.

Now, when I plug it in the green power led turns on but slowly fades to black and that's it. When I pull it out it turns green again for some seconds.
Oddly enough, when I move the cable slightly when plugged in the power led turns green now and then but always fades to black immediately.
Anyone own this model and know a way to fix it?

Now if it's "just" a loose connection/defective contact, is it somewhat safe to open the box and check?

Also, when I move the cable around it does some click noises now and then.

I can't imagine that the unit itself is broken since it was always in a safe spot and I never touched it until the power supply died.

I don't want to send it back yet, maybe I'm doing something wrong?

 

[Jarkko Mattheiszen]

Checked the polarity of the transformers plugs? They should be the some, otherwise it's feeding the device "the wrong way".

 

[abyssofdreams]

how do I check?

 

[abyssofdreams]

ok, I can switch the polarity on the adaptor unit but it doesn't say anything about the polarity of the Tube MP.
Is it safe to check both polarities?

 

[Jarkko Mattheiszen]

how do I check?

Heh, my English is inadequate to describe what I mean, but the transformers (European, at least) usually have a marking on the unit that says where (physically) is the positive and negative contactors in the plug. Maybe someone who knows the terms better could explain this?

 

[abyssofdreams]

ok, thanks, I just checked without knowing what I do

On (-) polarity it does NOTHING, on (+) polarity it does what I described above. I'm lost.

 

[VH100R]

how exactly did the AC adaptor got busted?

that's strange and I guess it has to do with the fact the unit doesn't work anymore.

 

[Metaltastic]

Heh, my English is inadequate to describe what I mean, but the transformers (European, at least) usually have a marking on the unit that says where (physically) is the positive and negative contactors in the plug. Maybe someone who knows the terms better could explain this?

Dude, you and the other Finns have some of the best English of the durn foreigners on here! And I think I know what you mean, are you referring to this?

 

[Jarkko Mattheiszen]

Dude, you and the other Finns have some of the best English of the durn foreigners on here! And I think I know what you mean, are you referring to this?

Exactly that, cheers! I remember the symbols used and what they indicated, but realised I couldn't describe it even in Finnish Brain farts! \o/

 

[vvghost]

So here's the thing:
I recently bought an ART Tube MP for my mic and a few weeks ago and it worked like a charm. For some reason though, the AC Adaptor/power supply isn't working anymore so I went out and bought a replacement, not the same manufacturer but it's got the same specs which are:

OUTPUT: 9V ~ 1000mA

I made sure that the output voltage is the same though the manual says an output of average 700mA would be sufficient.

Now, when I plug it in the green power led turns on but slowly fades to black and that's it. When I pull it out it turns green again for some seconds.
Oddly enough, when I move the cable slightly when plugged in the power led turns green now and then but always fades to black immediately.
Anyone own this model and know a way to fix it?

Now if it's "just" a loose connection/defective contact, is it somewhat safe to open the box and check?

Also, when I move the cable around it does some click noises now and then.

I can't imagine that the unit itself is broken since it was always in a safe spot and I never touched it until the power supply died.

I don't want to send it back yet, maybe I'm doing something wrong?

Hello!
I have exactly same problem with my ART Tube MP (i bought 9v 1A power supply and got same symptoms, then i started to search in google). Can you tell me, did you found solution for this problem?

 

[DanLights]

I think abyssofdreams hasn't showed his face around here in ages, so I doubt he'll be able to help. Maybe you'll get lucky and someone else with the same problem will pop up.

 

[xTomx]

Aren't these the cheapest pre-amps you can possibly buy? If you get really frustrated just take a hammer to it and buy another

 

[LeSedna]

+1, they are worth à few dozen of euros, and with the stock tube they aren't worth it IMO. I have one and I just never actually used it. Some people had luck using it as the simplest way to put a good quality tube of their choice in their chain though

 

[vvghost]

Well, yes, i will use another preamp then, but i cant sleep already. I tried to get 700 mA by using resistor, but this dont work. Probably, tommorow i will open box and try to find what electricity ways are thinking about.
Sorry for my english ><

 

[updog]

i have one but i've never really used it... i want to change the tube. anyone have any recommendations as to which tube to use?