NUMARK DIMENSION 4 1900W blowing power cord fuse

A fuse blows because the circuit it provide power to has a shorted component or wire.

Fuses blow when there's an overload. Mostly caused by a semi-conductor device that shorted out. If it's a transistor or diode it will be easy to spot with an Ohm meter as touching the terminals will be just like you have touched the two test probes together!

Either a short somewhere---which fuse? The one at the power cord or what?

Other possible reason is wrong fuse----many of the fuses in these sets are special-----if you go and buy some Generic ones--hardware store or Radio Shack the fuse even with same amperage/voltage rating may blow at turn on instantly for no reason------

There is not an internal fuse.

Make sure the plug for the power cord is the same polarity and DC or AC for the mixer. Also make sure the inner diameter is correct for the station power jack as well.

As long as power from the supply is correct and adequate, theother potential sources of problems can be a blown internal fuse, broken power jack circuit tracks/traces, bad solder joints, dirty switch contacts, some contact cleaner sprayed in the gap of the switch toggle and then flipped rapidly for a number of times might clean it up.

Replace the 2 big capacitors and Fuse Resistor 10watt on board that has AC line cord that plugs into wall.

This condition, may be produced by defective components (Q506, Q507). you can remove those transistor, replace the fuses, power-on and wait for relays click. if the fuses not blown again, them replace both transistor.

inside the pc there should be a green light. called flea light. if its not on.. then id say motherboard or power supply are bad.
take power cord off. and hold power button down for 10 ecs. then reconnect and retry. i think its abad psu.

Look for shorted output transistors or possibly shorted rectifier diodes. An immediate fuse blowing up usually means that the power supply is the problem. Keep us posted.
Dan

You have a short in the power supply. Look at the regulator and or rectifier diodes. These are all on th primary side of the SMPS (switched mode power supply) the secondary side if shorted shouldn't cause a blown fuse at all.