E III possible bootload fault

[Kaleid]

Hi folks! My name's Jaume from Spain.

I have been presented the opportunity to buy a EIII but I warn that power supply fires up and delivers power. It get lights on the panel, but no characters in the display. So buyer thinks something on the system board is failing the bootload.

I'm quite fond on electronic musical gear and I 've got a some samplers like AKAI S1100 that I have repaired myself but never I've never seen an Emu inside.

any clues?

Thanks a lot. I' ll try to help someone on my own modest  knowlegment