Alesis SR 16 Output sound Problem

[zeef]

HI folks

My brother gave me an old 1990 alesis sr 16 , when i connect it to my amp the output sound is very strange , it is completely distorded and strange,

Anyone knows what can be?

Old age?

I open the alesis and the circuit is like new , no humidity or corrosion 5***!

But the sound is crap.

Regards form Portugal,

[mdmckee]

Try a reset, while powering on hold the play and erase at same time