burned mic

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mrdanny

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Hello people, I have a problema that I'll explain here...

I had a tube mic connected to my power supply "no need of phantom power", and the power supply have 2 switches, one for 110v and other for 220v, the manual of the mic tells that is very importante to keep the switch in 110v...

Well, I had the mic connected and while I was recording my little brother had the idea to switch the power supply to 220v and just when he changed, the power supply stopped working, "the light of the power switch turned off", and my question is, do you think it is just the power supply or it haves lot of possibilities that the mic is burned?

"I hope it's only the power supply" but could the mic be burned at this moment? does it have a large possibility?

(sorry for my english)
 
I had a unit shipped to me (from a UK seller to a UK buyer :facepalm: ) in 110v setting.
I still suspect it was faulty already and this was a get-out for the seller.

Anyway, the damage was limited to a few capacitors in the power supply section.
The unit was a motu 828 mk2, so there's plenty of delicate stuff to go wrong in there. $2 worth of caps later I was back on my feet.

I know that doesn't really answer your question.
My advice would be to box the mic up and leave it alone until you have more info.
If you're confident yourself, open the PSU and see what's happened, if you can.
Find out the exact voltages that it should output and test for those voltages after any repair.

Don't let it near the mic until you've been able to confirm operation and output voltages.
Check fuses first. Bulging caps second. Google third. ;)

What models are you talking about here?
 
Hi there, I'm talking about an mxl v69 mogami edition, and of his power supply that comes included, well I don't have any experience to repair the power supply... Could I connect the mic to another power supply of 110v of other brand? I know a friend that could have one, just to test if the mic is burned...
I don't know..
 
I wanna hear how you strangled your little brother.....hopefully it was painful for him. :D

;)

I will bet you just fired the PS....as the juice to the mic shouldn't change by the front-end power. So it could be the PS tranny or some other components, but your mic should be OK.
If you try it with some other PS...you need to be sure the pin-out wiring is the same...so check what the mic is expecting to see at each of the pin, and if this other PS matches...then it should work for the test.

Have you asked the MXL people...?
 
I'm trying to figure out how switching to 220 on a 110 system would hurt it. If it were 110 settings and you plugged in to 220 I get that.

It has to be something simple.
 
my little brother had the idea to switch the power supply to 220v and just when he changed, the power supply stopped working, the light of the power switch turned off

Not being funny, but did you set it back to 110 and try it out?
 
Does it have fuses you can replace? MXL has a support email, you should try them.
 
Well, first at all, my brother's burial will be celebrated in a few days...

And back to the mic problem, the power supply doesn't turn on, even if I switch to 110v, well, the next week I'm going to a musical shop for trying the mic with another PS, I hope it works... I'll contact mxl, and i'll try to repair my power supply, I have no desire in spending 60EUR in a power supply just because my brother wanted to have some fun discovering the power supply functionalities hehe

Thank's everybody!
 
I'm trying to figure out how switching to 220 on a 110 system would hurt it. If it were 110 settings and you plugged in to 220 I get that.

It has to be something simple.

That's an interesting point.
I just assumed he made a typo in his original post and reversed things.
He is obviously somewhere in Europe, where the voltage is 220....so yeah, switching the PS to 220 is what he would have to do to make it work, not the other way around....unless there's more to the power hook-up than we are being told...?

mrdanny

What AC voltage do you have at your location....110 or 220...?

Did your brother switch the PS accidentally from 220 to 110...or from 110 to 220...???
 
Well, I can help there a little. He's in a country that has 220/230 50hz. The manual says it is important to select 110v for the US, not Europe.

Again, check to see if there are any fuses you can change out. It could be as simple as that.
 
It's got to be that he switched it from 220 to 110, in a 220V country. The other way around would't cause any harm, but the other way usually fries the transformer. Although nowadays, with switch mode PSUs, voltage switches are rare. It is, however rare to find an easily switched 110/220V switch. The ones I have need very deliberate prodding with a finger nail or tool to make the change.
 
Well, now I'm very lost... I didn't know the difference of voltages on diferent countries, well, I live in Portugal, I don't know the specific voltage that is necessary for the mic, but I always used it in 110V and it burned when "I" changed to 220....
 
I am pretty sure it was on 220 and it was switched to 110. I think only Japan, Canada and US use 110. There might be others, but I am unaware of them.
 
The PS came switched in 110 so I never changed since my brother had the briliant Idea to switch to 220 and it turned off suddently, but I guarantee that it was in 110 everytime I used it
 
Portugal is 220v mains so your unit should never have been set to 110 in the first place.
It should have immediately shat itself the first time you powered it on.

Could you clarify, you've got Microphone -> Marhsall PSU -> Mains power socket. Nothing else in the (electrical) path?
 
Waw, I don't know, I bought the mic to a friend and it came switched to 110, also I read the manual of the mic in the mxl website that said it always had to be in 110V so I never changed it and it worked, I had the PS connected to a regular socket and that's all..
 
I don't want to be rude - but if you don't know the mains voltage in the country in which you live, thats a bit worrying! Here in the UK, every single plug is stamped with a voltage, warning signs mention voltages, every single appliance has the voltage printed on it, and although parts of Europe were 110/115 a long time ago, very little of the equipment designed for that is still in service.

In Europe, we are all now 'harmonised', so the UK old 240V 50Hz mains is now termed 230V, and in mainland Europe where they were 220V, they are now also 230V. In fact what happened is that we all stayed exactly the same, and just changed labels and the figure used to do calculations. They cunningly set the new spec to have a plus/minus allowance that allows us to just carry on with 240v, but call it 230! Crazy eh! Plugging in any device expecting 110V into a 230 or 240V supply is a killer. Small devices have no protection at all and the very small transformers and bridge rectifiers die very easily. Fuses often have no effect at all until the transformer fails and shorts, and then the fuse goes.
If you are in Europe - then be very wary of any device with a switch - because they are either old designs or accidents waiting to happen. Plugging in a European gizmo into a lower voltage supply won't cause any problems, apart from it perhaps just not working. Nearly all recently designed kit doesn't have these switches nowadays, the voltage spec just says 110V - 230V. Plug them in and they work.
 
also I read the manual of the mic in the mxl website that said it always had to be in 110V so I never changed it and it worked,

Here is what the manual says...

MXL V69 Mogami Manual said:
In the United States, make sure that the switch on the back of the supply is set to 115.

It should be in 220 for your country. I can see how switching could damage the power supply. Again, you should contact MXL, they might have a solution.
 
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