Roland XP 50 Head phone not working

Read this please

https://www.justanswer.com/electronics/9xlyw-roland-digital-piano-kr-4500-piano-turns.html

and these

https://www.google.com/search?q=Roland+kr+4500+no+sound

But you will probably need a service centre for replacing components.

if your saying the power goes on/off allot then its got to be your power cord or connector in the back , these do have a hard life as these get moved around a bit , its gonna take a pro repair to replace the power connector-but you can buy new cords for them , try to wiggle it to confirm that's it , but if your display just goes on off , this is a software problem as most likely a error in reading the drive

Assuming you have checked the fuses, it's most likely the power supply. It will need to go to the shop.

hi there.
see if this link helps you out.
Roland xp 50 main board sound problem Google Search

how to hook up roland dm 20 to...computer.

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ftp://ftp.roland.co.uk/productsupport/

I would start by checking AC cord is good, look for a blown fuse (BE CAREFUL !!!!) or maybe a defective OFF/ON switch. This keyboard is from the mid 1990's so PLEASE consider this before having it expertly repaired. $$$$$$$

Flick your finger nail against the preamp tubes. This will tell you if any are microphonic which most likely the case. It usually takes a few minutes for them to begin squealing.

Looks like capacitor problem.Check power supply section also.

Yes, he is full of it. For parts try Digikey.com, Mouser.com, and AntiqueElectronicSupply.

Ok guys. Just got mine XP50 fixed with the "No Display" problem. The LCD screen was blank without text and only shown orange color. The problem is one of the capacitors on the main board was dead. I have replaced all 3 caps on the main board and the problem is solved and if you are a little handy on soldering, you can do it yourself. The 3 caps you should replace are:

- C901 (I used 16V 330MicroF)
- C65 (I used 5V 4.7 MicroF)
- C 902 (I used 16V 330 MicroF)