It is too bad we don't really know the issue of what happened to your power supply, was it heat related or??? There can and are a lot of reasons for power supply failure. As an example early on in the PC days we were having power supply failures regularly. Once we dug into the issues we found that almost all of them had to do with large components that were solder in place with no mechanical support. The repairs were a matter of securing the part and re-soldering. Was there heat present, yes, was the failure totally due to the heat, no. Like wise the power supply in the powerpro may have some like issues and just providing added cooling will not solve them.rjent wrote:Heat is a major killer of electronics. I have already lost a power supply. It would seem to me that drawing more air through the Headstock with a regular "blow out" maintenance regimen is far better than than burning up $500 power supplies and controllers. I am going to look into this. I get overheat errors when routing/shaping constantly. With SS not protecting the customer from the internal failures of these units beyond 2 years, a little extra maintenance is worth doing.
JMHO
It is unlikely that one can simply blow the dust away from all the places it might collect while in use and who knows where it goes once you add a fan.
This is really a lot more complex an issue then most people are aware. Back in my working days we did a lot of modeling and testing of electronics. The preference was to use natural flow when possible but when the heat density got too high we had to resort to added air flow and trying to do circuit board layouts to allow the air to move with out stagnate areas over heat sources.
I have no idea what powerpro parts are likely to fail but capacitors are always a high failure item. Getting high temp rated caps were always an issue back in the day, no idea how it is now. If you have a heat source that feeds the heat to the cap and it is on the eddies of that part with a fan blowing things could get worse.
Just adding a fan is unlikely going to be the golden egg solution.
I have to admit I do very little routing on the powerpro or shopsmith for that matter. I have plenty of routers to use and do. For me the whole top end is a waste, if they were to offer a 100 rpm to 8,000 rpm I would have preferred it. I did do some routing today on the shopsmith, but only at low speed which worked fine, and I only did it that time due to a reuse of the setup I had from a drilling operation.....
If you are a heavy router user it would seem a lot cheaper to buy a couple of routers then worry about running the shopsmith at high speed if you are worried about repair costs to the shopsmith. I know shopsmith decided to market it as a router but if anything was a mistake that probably was.
Anyway just wanted to make sure people know that a fan is not necessary the solution and could even make things worse.
Ed