Numark tt500 loses power on and off temperamentally , have tested a new power cable and still have the same problem.. :(

If your Numark 5000FX mixer is not registering your Technics turntable on any of the channels, there are a few things you can try:

1. Check your cables: Make sure that your RCA cables are plugged in correctly and securely. If you are using a phono preamp, make sure that it is powered on and connected properly.
2. Check your switch settings: Make sure that the switches on the back of the mixer are set correctly for the type of input you are using (line or phono).
3. Check your levels: Make sure that the input levels are turned up and that the fader for the channel you are using is not muted or turned all the way down.
4. Check your ground wire: If you are using a turntable, make sure that the ground wire is connected properly to the mixer.

If none of these steps work, there may be an issue with either the turntable or the mixer. Try testing the turntable on a different mixer or testing a different turntable on the Numark mixer to determine which component is causing the issue. If the mixer is the issue, it may need to be repaired or replaced.

Hi!

Maybe this manual will help you: http://manualsbrain.com/ru/manuals/782782/?page=15
Here are described problems with Numark TT500 and solutions

Hello,my TT500 stop working,and smell like was burned,but no,it was the R55 Resistor had a bad solder ,now i have to replace the resistor,i think it's 1 OHM 1Watt,i can's see the color code,i think when i put the new resistor it will work fine,but i don't know if cause another problem on the motor because that resistor.

Sounds to me like the belt has snapped or slipped off. Lift the platter off the table. On the inside of the platter you will notice a second ring, or rim. the belt should be put on the outside of the second rim while the platter is still in your hands. Next, slide back the platter and look for the spindle running the platter through one of the big holes in the platter. Slip the belt onto the spindle and turn with your hand to make sure it runs freely. Hope this helps

you have to replace the slide pot.they are made to be replaced.remove the pitch cover,unplug the cable with white wires and blue connector (it just slides in,or out),remove the ground wire (the single wire with white connector (it just slides off too).now unscrew the blue metal houseing form the pitch fader.now you have a fader+motherboard soldered together.you will have to desolder the posts.once this is done discard the old slide pot.test fit the new slide pot gently into the motherboard.if fits correctly,and posts are lined up,solder into place.clean debris if necessary.let cool,reconnect,test pitch.good luck! i had to replace mine,and it was a bad slidepot.take my advice,order 2 slidepots,just in case the other goes out,because they are hard to get your hands on!

Swap the channel cables from the turntable left to right to see if it follows a channel from the turntable or the same speaker is dead. If it swaps with the cable, then look for a break in the wire to the pickup on the tone arm. If the dead speaker remains the same, you have a problem in that side of the amp or the phono preamp.

Suspect the control circuit, or motor.

i'm having the same problem, just wondeered if you found any solutions to this?

looks like u have a problem with ur motor....if u have a belt drive check the belt and replace it....lift turntable off and start the player u will be able whats going on...and go from there

You need a new adaptor...the wires have lost their connection in the cable or plug which isnt user servicable
KK