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Power supply polarity - MidiLand MLi SW190 Computer Speakers

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Guitar pedal power problems


Wow! All these are supposed to have a standard polarity connection.

Verify that this pedal has the opposite polarity of the power.

Frankly, having a second supply is expedient solution... The only other way is with blocking transformers or capacitive coupling...

I have never heard of a pedal having opposite polarity. PLEASE fill us in on this problem for future reference.

Feb 04, 2010 | Music

1 Answer

The invesion polarity of the power supply coul'd be broken the mainboard?


Reverse polarity of the power supply to a laptop will damage the motherboard if there is no reverse polarity protection built-in to the motherboard circuitry.

Jul 12, 2009 | Computers & Internet

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Lost power supply


It usually wont hurt if the polarity is not right. Most electronic device have a diode to protect it from reverse polarity. Make sure that it needs 12V. If you put higher voltage than what it needs that is what will damage it.

Apr 16, 2009 | Computers & Internet

2 Answers

Need to know polarity of power supply for JBL


Look where the plug goes in
There will be a C shape with a dot in the middle. Follow the line attached to the dot and you will see a + or - which is the polarity. Next you need to know Voltage. Look in the same area, or on the label for this info. If there is NO info by the power plug, it might be AC, which has no polarity - just plug it in. The label may have this information and will say something like 12VDC or 12VAC that is the key. DC Matters (+ and -) AC does not.

Mar 26, 2009 | HP JBL Platinum Computer Speakers

1 Answer

BEFSR41 power supply?


Both the voltage and the polarity should be printed on the case of the router. The polarity should be right next to where the power plugs in.

The polarity information will look something like this:
--(-(+))--

If you take the router into a local Radio Shack, the clerk will probably be able to tell you which power supply you need.

Jan 09, 2009 | Linksys BEFSR41 Cable/DSL Router W/4 Port...

1 Answer

Polarity for power supply for cornea mp 704 lcd monitor


There may be a virtually invisible polarity symbol on the case next to the connector.

Apr 20, 2017 | Cornea MP 704 17" Flat Panel LCD Monitor

2 Answers

Want to know polarity of Zip 100 DC power supply.


I just connected a new power supply to my zip 250MB, with the center pin as positive - and it worked out well :-)

Dec 18, 2008 | Iomega U.S. Power Supply Drive

1 Answer

What is the polarity of a Alesis P3 Power Supply Barrel ?


The P3 is an AC supply; so there isn't the question of polarity. Connect it either way.

Dec 14, 2008 | Alesis P3 Power Supply Barrel...

1 Answer

Need Power Supply


usually Lcd tv rated 12volts 3 ampers
but be careful.. check the polarity of ur lcd before plugging it.... some power supply has different polarity. good luck..

Feb 12, 2008 | Niko OTP-2011R 20 in. LCD EDTV

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