Vintage Synth Repair

Hi

So I have sometimes a k2500R problem (when my k2500R do not worked since several days).

Indeed, Sometimes I must push on several times the power button to have ignites screen. (If I do not that screen stays black)

It makes it when the machine has not been lit since several days.

Otherwise if the machine functions every day, all functions correctly.

When the screen remained black the red diodes and the one of the floppy are lighted

Do you have an idea of that that it can be ?

The very big problem for me is the following : I am living in a country where is no Kurzweil service\u2026 Please give me some help

Friendly way

David