Akai S1000 / S1100 samplers

Hello everybody !

I'm new in this group. I own a s1000 with full memory and a S3000xl.
I really love to use hardware samplers than software. 
my s1000 is very old and used and make some noise at the end of sample. I would like to repair it. there is some problem with the display (all the characters are not at the good place but when i push again the button, they go to the good place...). Fortunately, I know very well my sampler and it's not really a problem for me... expect the noise at the end of sample.
I think it come from some bad caps.
If some can help me.

thanks

Charles

ps: I'm french so my english is not so good...