Denon DP6000 crackling noise: Need Help

Hi All, I need some help. The Denon DP6000 that I just acquired worked great the first day (2 hours). The next day, it held speed. However, there was a crackling noise that emanated from the drive unit (the cartridge was not on the LP). The noise occurred only when the platter was moving. When the platter was stopped, with the power still on, the crackling ceased. (I played it only for about 5 minutes with the crackling noise.)

I know it is old and needs new capacitors. I will replace those immediately (Originally, I was hoping to put it off for a few months.)

QUESTIONS: Besides capacitor replacement, is there something else that needs attention? Is there a bigger problem?