I have a miller blue star 6000. I started it up but its not putting out any power.

could be a faulty power control swotch
I am inclined that the voltage regulator the controls the amp out put is faulty
Take it in for a specialist diagnosis to a welder repair shop

Shorted rectifier (diodes) assembly. 2 flat pieces of aluminum. follow the weld leads back. I think it's on the left.

Check your idle control module,
take the roof off of your welder, located at the top right of the inner control panel, it is the little red box with multiple white leads connected to it and labeled with alphabet letters.
pull the connectors, insure they are clean, reconnect them, start your welder and see if that corrects the problem, if not, you will need to purchase a new idle control module

Miller switch part # 011611 you can order through your nearest Miller dealer.

The potentiometer for current control may be shorted, there may be an issue on the control board where the SCR's may be shorted. It is possible the accesory board was wired wrong.

It is also possible there is a broken wire in the current sense portion of the circuit, but I would first look the current control pot and at the SCR's to be at fault.

http://www.millerwelds.com/service/ownersmanuals.php?model

If you see a model that is close in description in the Blue Star models, such as a "145" the wiring diagram should be close if not the same. Otherwise select from the list the Blue Star with the same engine type as yours.

The If the tag is not damaged, and truly a JE series, you can download all the Blue Star manuals to find the one that has your serial number in the range. Miller is good with manuals, but sometimes the cross reference to just serial number does not work.

wont run

HAVE YOU CALLED MILLER

probably the AVR card produced over-powering and then went down...try replacing it..
i hope i helped...send me an email for more details

if you remove the transformer block ( the one in witch you insert the power cord... is secured with two plastic restrains ) you may see a small electric drive... engine name it as you wish with two blue wires ..
those two blue wires are the positive power coupeling on it ... if they are removed you get error 6000. The removal of the two blue wires may occur when moving the printer or if you remove the transformer block from the printer. put them back to the electric engine, and you will resolve the canon mp600 6000 error and possible other serie two ( the error is standard for most MP series and even IP). Be shure to unwind the blue wires around the small ring or else the wires will pop off the couppeling when you put the transformer block back. It is a pain in the back to recoupple the blue wires into the elctric drive but it can be donr without opening the whole printer(witch is a huge pain in youre back side).
I reffer to the transformer block as the ac\dc block witch feeds power to the printer. For any problems adress me at alexmi88@yahoo.com