I recently purchased a demo K2000VP with orchestral ROM from an online retailer. I got the synth yesterday and it is actually a K2000VP loaded up with all of the K2VX sounds, but the K2VX and contemporary sound blocks are defective (sounds absent or aberrant), so only the orchestral and K2000 ROM programs are good. It seems that the ROM upgrades were installed without also installing a fan kit; could this have damaged the above-mentioned sound boards? If so, should I be worried about the integrity of the K2000 ROM and the orchestral ROM? Just wondering if I need to return the demo and just get a new K2000VP. Thanks for any help.