Cdmp6000 no light display

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It could be the light, or it could be the inverter that powers the backlight. Try asking this guy: http://www.mikebarden.com/technics-electronic-digital-kn-pr-px-piano-keyboard-ensemble-repairs/

1. Press and hold down the ASSIGN A button (the light should be blinking) then (simultaneously) press the REC button above channel number 1. The light should blink when you do this.
2. Release the ASSIGN A and the REC button
3. Press the REC button above channel 1 (the light should be blinking by itself)
4. You should see the meters moving with in the display above Input A and Track 1 when you speak into the microphone.
5. Press the REWIND button twice until the display reads ABS 00.00.00.00
6. Press and hold the RECORD button and press the PLAY button. The REC light above channel one, the PLAY light and the RECORD light should become solid.
7. After recording press the STOP button.
8. Press the REWIND button twice until the display reads ABS 00.00.00.00
9. Press the PLAY button.

Only by replacing the screen.

try adjusting contrast, and try a different lighting source. If you have a polarized light source currently, try orienting it 90 degrees from where it is. That type of LCD relies on reflected lighting and it uses polarizing filters, so you may be at maximum contrast, but the current lighting is being absorbed by those polarized filters. Plus LED lighting, if not the right light frequency too- it gets absorbed. I have a clock in front of me that is exactly that way

what do u mean it sounds like ****? it could be a dozen things cables loose wires, basically check n recheck everything n then just the dj stuff by itself that will narrow it down so we know what it is.

You don't say what device this is on, HOWEVER most thngs have a "contrast" control that will adjust the visibility.

Sometimes they call this a viewing angle control and sometimes it is a small shaft from the back of a unit, OTHER times it is a setting available through a menu... if you can read the display enough to find it...

No sound only display back light glow

If other lights are on, I have seen a case where the display does not light for a time, especially if it is cold. The gas in the display takes some time to light up like some neon bulbs... the effects should still work, you just can't see the display. Usually the display will eventually come on after a few minutes after being off for long periods. Sometimes one can encourage the display by external radiation such as a cell phone in close proximity.

See if the FX input indicator is functioning.

If the electronics of the DSP/FX is dead, troubleshooting it is not a DIY unless you have special test equipment. The unit uses two 57002 DSP's controlled by an 80C32 micorprocessor. Beyond checking that the 80C32 is operating and busses have activity, you probably won't be able to do any fruitfull troubleshooting

If NO lights come on in this unit, then the power supply has fried and you don't want that as it is likely caused by the rear power amp arcing out.. Lots of work to repair. Since rest is working this is not the case with yours. ALWAYS be careful to insure speaker leads are solid with this amp as an intermitent lead can blow this amp easily.

Behringer does not release their schematics to non-agents...

Sorry, but many of the low end keyboards do NOT have backlights. This is especially true of those that have the capability of running off batteries like the CTK-496.

The display in this is a reflectance type that needs ambient lighting to view.