Dual 604 motor board caps

HI all,

I have a question about the caps on the Dual 604 motor board.

My sm shows c3,4,10, and 12 as electrolytics. What I have in my machine are not electrolytics, but they look like they could be original. The first one I checked is bad.

I have electrolytics on hand. Can anybody tell me what was original equipment, and if I replace them, is it ok to replace them with electrolytics?

Thanks
 
If they are not electrolytics, then why are they bad? Film and ceramic caps usually don't go bad.

They could be tantalums, but tantalums are also electrolytics, they just use tantalum instead of aluminium. Or they could be those confusing plastic Roedersteins that look like they should be film caps but are, in fact, electrolytics...