Hi, Scott:I thought I had posted a reply to this last week, but it hasn't shown up.Basically, apart from the electrolytic capacitors, if it doesn't seem to be broken, my advice would be "don't try to fix it."I've had my 2800 for about 30 years now and, while I have to clean sliders once in a while, I've not had to replace anything.I did re-flow the solder on the filter pins a few years back and the filter came back to life.Is there any particular problem you're having with it?David