
Damn, dr4track, thanks for Your time, I'm so thankful for Your advices. It means a lot.
Look, for sure it's not about the heating. It can crash 3 minutes after beeing switched on.
In previous post I was sure it's about MIDI connection but probably it's got something to do with power circuit. I've even tried and plugged it to another socket but it crashes as well.
I've already wrote an e-mail to people who do repair old and mostly analog synthesizer in my country but even if I had to send it to service it'll be pain in the ass: it's about 500 miles away from where I live. However I don't see point in buying new one: I'd probably have to get one on ebay from Europe (and the price will be higher than in US for sure) because getting one from US would kill me: taxes, customs, shipping costs...hell no.
"One of the tell tale signs of the ribbon cable pblm is when u use it when u press a button do characters appear on the screen (obviously ones that shouldn't b there)"
I didn't have such problems. I mean no unknown/unwanted characters appeared on the screen during pressing buttos, moving sliders etc. Anyway thanks for the hint.
My friend who uses analog synths said something about small batteries inside ensoniq and he thinks that may be a clue. From the other hand I wrote to a guy from NY who rapairs samplers and he thinks it may be a serious problem with motherboard. Sh*t really gets me crazy.
Good to know about Suntrust.
Thanks again, mate, I'll keep struggling. It's sad that completely nobody encounterd problem like mine (I mean: I don't wish anybody to have such issues) because something would be clearer for sure.
Cheers.
DRINK YERBA MATE, FOLKS.