I don't see how it could harm it,but,it's better to set your fan up to pull heat from the unit.Just my opinion.
What about a fan blowing over McIntosh 7205 AMP?
Seems like my Amp was getting pretty warm so I put a small fan to blow over the top of it which seemed to cool it down. Talked to a Mgr at a stereo store and he said not a good idea. Seems to me they put fans in computers to keep them cool, but he was pretty sure I could do more harm than good. What is anyone else's opinion???? just thought I would see if anyone wanted to put in some feedback..