Patches and discussion for Ensoniq VFX family

As some of you know I have cherished my VFX-SD as a trouble free road 
warrior over at least 10 years. The other day I bought a Karma on 
eBay, but it wasn't to replace the VFX, just to add to my stack. The 
VFX took it the wrong way:

I turned it on and I just get a very faint illummination of a few 
characters on the right and left of the display. No floppy no 
booting. So I checked the power supply and found F3 and F4 are both 
blown. I can't find any of the old schematic postings so I thought I 
would throw it out there (Richard). Where do I go from here? I do 
know electronics, but I am not taking on a main board if these are 
going to that. 

Thoughts? Could I get lucky?  The VFX is still hands down the BEST 
controller ever evented for those of us who like layering on a 
unweighted, but high quality keyboard. I spent hours looking at the 
new Tritons, Motifs and Fantoms and nothing beats double click access 
to 12 patches realtime.

Thanks for any help you all can offer. BTW if you haven't checked out 
a Karma, it really fits witht the VFX and it is great poor man's 
Triton.

Dan