Vintage Synth Repair

>hi, i have a omni 2 with nothing powering exept the power on light.
>was wondering if i replace the tantulum 10uf caps on the power board
>can i use electrolytic caps of same value. does it matter if they are
>non-polarized. Would ceramic disk caps work or do i just need to keep
>looking for tantulum. i searched all previous posts but didn't find
>anything too specific. I am new to electronics and would appreciate
>any help. thanks
>Ps should i go ahead and replace all the 10uf caps on all boards or
>start with the power supply board and hope that gets me somewhere.

If the board has tantalum caps now it's probably a good idea to replace them 
with electrolytic (of equal or greater working voltage).  You can replace a 
polarized cap with a non-polarized one (but you should be  careful if you 
want to replace a non-polarized capacitor with a polarized one).

Other capacitors may need replacement but the ones on the power supply are 
generally the best candidates (though if you haven't yet diagnosed the 
problem with the power board, replacing the caps might not do much).