Question about SWR headlite Amp Head Bass

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I've got a problem with my SWR headlite, following a wrong power supply use. I've connected it to 220v instead of 110v. As a result 2 big carpatitors have burned out, but I still have a problem with mute button after replacing carpatitos by the same. The problem is the Mute button switches on by itself when I turn it on and switches back to ON position in about 1-2 min anytime I push it back to OFF position. I've tryed to order a schematics from SWR but their mail adresses are not workin'.

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6ya6ya
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SOURCE: SWR WorkingPro 400 watt head - no sound

I have found a site with SWR schematics: They have one for the SM400 which may be very close to what you have, or at least parts may be the same.

http://www.freeinfosociety.com/electronics/schempage.php?cat=1


Posted on May 31, 2010

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stefan_mayrh
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SOURCE: SWR WorkingPro 400 watt head - no sound

Check positive and negative supply voltages on the op amps. Sounds like one of them failed

Posted on Dec 19, 2013

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1 Answer

M-Audio AV20 smells like burnt


Yes, it is possible to burn an IC and not the fuse, because of Safety standards, the fuse has the function to avoid a possible fire, but it should deliver all the power needed by the circuit it is protecting, and that amount of power can burn, in this case, the IC.
From my technical point of view, there should not be a problem to connect the speaker to 110 V instead of 220 V, all that might happen is to have less power available at output, I have no idea about the reason of the burnt IC, but, as we all know, they (the IC's), don't need a reason to burn themselves whenever they decide to.
So, the next step, will be to replace the burnt IC, and that is not a simple task, you need a SMD station and some experience in doing such jobs.
Good luck and best wishes.

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Dynaudio BM - Power from 110V to 240V or 240V to 110V


Hi Guys,<br /><br />This is what I have learnt the hardway so wanted to share it with everyone who wants to get his Dynaudio Speakers converted from 240V to 110V or 110V to 240V.<br /><br />I actually requested many forums including Dynaudio Support as I bought mine from US and they were 110V, I wanted to use it in my Country which has 240V standard, What these guys suggested me was to order the whole AMP Modules for the speakers if I want to have them work in my country. In other words it was a solution of $350 per module totals to $700.<br /><br />Shame on them as I opened the speakers myself and found a small jumper wire hooked up on the connections marked 110V and there were other connectors marked with 220V and 240V.<br />All I did was just took out the jumper from 110 and inserted it in 240V connectors!!<br />Thats about it!<br />So guys forget these mean techiz at Dynaudio and use my experiene to solve your problem :-)<br /><br />Cheers<br />Satch<br /><a href="mailto:satchriani2@hotmail.com">satchriani2@hotmail.com</a>

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Moving to Canada Korg M50 - 220V to110V ?


110 will not damage it, just will not work, if built in power supply should say on the rating plate next to power input the voltage it is able to take, a lot of units are rated 110-240v some will have a small switch to change over from 110 to 240. Other than that, you will need to get a step up unit to supply 240 from 110 just a small transformer unit.

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Connected alesis sr16 with alesis 110v power supply.to 240v mains...........briefly powered up and then nothing. Have I "fried" the adapter or the sr16?


Look carefully at the adaptor and see if it takes any voltage besides 110 (it will say in very tiny print, you will need a magnifying glass). if it does NOT say 220V or 240V then you friend the adaptor. Get another adaptor - most are "dual" voltage meaning they run in the U.S. or overseas.

Also check for "polarity" (which part of your plug is + or - ).

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I connected it to 220v, but the power supply is the US one (120V). Is there a chance that my ESX still works?


• Power Supply should be checked first by a multimeter

then the ESX will follow.


other option:

• Borrow a working power supply adaptor one from a friend,

just to determine if it is the ESX , the power supply or

both ( I just hope not )


Once determined , you can either repair or replace

the AC/AC power supply


Let us know how it goes

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1 Answer

Bought from usa to australia changed to recomended fuse, fuse blows as soon as turned on the unit was brand new any ideas ?


hi,
You have to check the working voltage of the adapter of you device. If it purchased from US then it will be 110V. I think the Line voltage in Australia is 220V.Also You have to check is there is any input voltage selector in the in its adaptor . If it there you have to change it to 220V. If there is no such selector then you have to buy a 220v to 110v converter .Then connect the out put of that converter to to your device. You can by this converter at any electronic spare part shope near to you. Or you have to by a new 9V 1.3Amps AC adaptor. When you going to by the converter or a new adaptor take the device. If so they will explain you how to connect the converter or adaptor . By changing a fuse you can't change the operating voltage. If The adapter is designed to use in 110V then the fuse will blow. If you change the fuse and make more experiment with it it will make the full system useless.
ok

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1 Answer

Can this unit be easily converted from 110V to 220V for use in Europe?


im pretty sure they sell a converter kit for pretty much anything, so i wouldnt see why not

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1 Answer

110v is pluged to 220v. What part of the organ damage?


This totally depends on what organ you have.

Many would blow the input fuse. Some organs have a wide range power supply that would use either 110 or 220.

What model is it?

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2 Answers

Europower pmp 3000 120v or 220v ?


Unit has wide range power supply will operate on 100 volts to 240 volts without any change other than possible plug adapter to mate with each countries receptacle standard.

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2 Answers

Europowre pmp 3000 a120v or 220v?


There is a jumper (JP1 or J1). If you cut that jumper, the mixer will operate for 220V. This power supply is the same with the ones used in desktop computers. I did that to my mixer bought from US made for 110v. I replaced that jumper with a switch (from a desktop power supply), I made a whole and I fixed the switch on the pack panel of the mixer. So now, I can switch it manually for 110v or 220v. It's working perfectly. I tested it for long time and no problems. Good luck.
PS. I called the Behringer technical support in the US and they weren't able to teach me that. So I figured it out myself after a big research. See the pictures about my project. :)

europowre-pmp-3000-a120v-or-220v-vtnbpargg3dudya2e50g5p1t-1-0.jpg

europowre-pmp-3000-a120v-or-220v-vtnbpargg3dudya2e50g5p1t-1-2.jpg

europowre-pmp-3000-a120v-or-220v-vtnbpargg3dudya2e50g5p1t-1-5.jpg

europowre-pmp-3000-a120v-or-220v-vtnbpargg3dudya2e50g5p1t-1-9.jpg

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