Power 48v check - Matrix Printronix Office Equipment & Supplies

Check your throttle cable. It may have become dislodged or broke.

You should check if the 48 volt is connected and correct. In the manual you can check the details. If you don't know what 48V is, don't try to check it.

Either the power supply in not generating proper 48 Volts or the controller board is not detecting a 48V output from the power supply.
First of all make ensure that power supply and controller board are correctly connected (check for loose contacts). Unfortunately there's not much you can do. The problem is either in the power supply or the controller board. There is a special tool for testing the power supply and deciding whether to change the power supply or the controller. From what i've seen in the field, most of the times its the power supply that fails. I can send you the power supply test procedure. If youre interested letme know your email.

You'll probably want to find a transformer to convert 48v to 12v. The wounds on the transformer would have a 4:1 ratio. You could do so with a regulator, but that'll burn up power and you'll need a decent heat sink to dissipate the energy. A relay is basically a switch. A transformer's the way to go.

hard to say without more info. you probably know this , but as a condenser mic it requires 48v phantom power to operate. Does the pre-amp/mixer you are plugging it into provide that (there will be a button on it marked 48v)? If not, that is the problem.

One place offer DC power 6V to 600v http://www.us.tdk-lambda.com/hp/default_lvgoog.asp?gclid=COGvyYGd96UCFcjsKgodqA0ZpA

2nd place http://www.matsusada.com/dc/ You may understand offerings better than I.

Most promising based on your need http://www.powersupplydepot.com/pssearch.asp?searchtype1=1&search1=48&action=Search

Hope you find what you need.

For a mic like sennheiser ME66\K6 prof.mic.you have two options.

What might cause the blinking of the light,might be the battery,cause it functions in two ways,either by battery or by phantom power that needs to be activated by +48v power phantom on your mixer before it can work properly .

So you will do is either you get a replacement of the battery on get a mixer that has +48v power phantom power.

What sort of a preamp are u using this needs to be plugged into the lo impedance XLR input (this is a lo output dynamic mic 1.85Mv out)
The XLR should be input pin 2 return (gnd) pin 3.This mic does not NOT use phantom power (48v) if it is a dual input (pin 1 48v) source make sure the phantom power is turned of.
If this is being done then there maybe a problem with the mic.
You can check this by plugging a source in to the input to check that it is working line out from cd player midi or some other source.
biinary 6

I have 5kW generators that produce -48V DC. The problem is that unless your generator is designed to produce -48V DC it would be difficult to retrofit an existing AC voltage output with a DC output.

if you have a volt meter check the supply is working correctly
48v dc phantom power should be found between these pins on any xlr mic cable.

pin 1 and pin 2
also between pin1 and pin 3

make sure you have amps turned down before checking/switching 48v phantom power

as if all is up and running it can cause big noise in the speakers.

let me know how it goes