I had the exact problem, mine was a YPG 535 brand new in box I put everything together with stand and FC4 pedal. When i got ready to play just a blue screen and none of the red lights came on and no sound, I notice when i was messing with the on and standby button hopeing it would work the speakers would make a popping noise I personly thought it was a manufacturing defect.....i'm sending it back to have it replace. I never had problems with yamaha products but seems like more and more defects are happing with newer portable grand series!
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If your Yamaha PSR-2000 keyboard is turning on and the blue backlight is displayed on the screen, but none of the function keys are lit up and not responding, there may be a few different causes.
Check if the power supply is working properly and is providing enough power to the keyboard. If the power supply is faulty, it may not be providing enough power to the keyboard.
Make sure that the keyboard's internal battery is charged. If the battery is low, the keyboard may not function properly.
Check if the internal fuse of the keyboard is not blown, which is a common problem on electronic devices.
If none of the above steps work, the problem may be with the control board or the display, and the machine may need to be serviced by a professional technician.
I would recommend checking the user manual or contacting the Yamaha technical support for further assistance, as they may have specific troubleshooting steps or solutions for your model.
The embedded software on board is not booting up. It may have detected a hardware problem. Make sure the power supply is in good condition then disconnect everything else and try again. If fault remains, its toast.
I had similar problem with my DGX620. In my case the display sometimes got blue and sometimes worked fine. The cause was a bad contact of the display flat cable.
I opened the DGX620 and then I cut a small piece of plastic film (35mm negative) with exactly the same width of the flat, disconnect the flat cable and then reconnected it using the film on the other side (non contact side) to increase the pressure and guarantee a good contact. No more problems from nov-2012 till now.
Hopefully you didn't take it on a flight as sometimes they use bomb detecting equipment that subjects cargo to either high levels of radiation or high electro-magnetic fields. This can damage the equipment. It sounds like the processor is not running. There usually is a screen contrast control that can be turned enough that the screen appears blank, but usually you can get a sound out of the unit without reading the screen, Look in your user manual for a FACTORY reset or restore and pperform that procedure. If that doesn't work, then repair is in order. If unit has been vibraated during transportation, it is possible a cable has come off inside. Since you just bought this, EXERCISE you warranty immediately.
If you was to turn the deck upside down you will see 4 main screws in the corners holding the silver top to the black chassis of the deck. undo these screws and carefully turn the deck over and lift the top off slowly. I say slowly because before putting it down (you might need someone to hold it for you) you need to un-clip the white plug and there will be a data ribbon stopping you from pulling the lid away. this is the strip you need to check both ends that the connections are clean and pushed in properly (the blue strip on the connector should be facing the middle of the circuit board) be careful not to snap the connector and make sure you push it into its socket straight and not at all at an angle or it could snap. put the white connector back in and pop the lid back on and turn it on to see if worked.
Try the contrast control. My DGX505 suddenly had a blank blue screen, I found that mygrand daughter had been fiddling with knobs and switches and discovered one I hadn'y noticed. On the 505 ot is located on the rear panel right next to the USB port. A slight tweaking of the lnob and all was restored. Heart attack avoided. And I learned something from a 4-year old.
Hope that is all it takes for you too. Good luck!
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