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<blockquote data-quote="Art Welter" data-source="post: 88536" data-attributes="member: 52">Re: PSA: Blow it out yer amps!The gummed up amps only had thermal problems, which went away when the sludge was removed, and would come back again as the sludge built back up, made me glad my lungs were not in the same environment regularly.None of the fan bearings on the old Peavey CS 800 and Crest amps used in the install ever failed when being blown out even though we didn&#039;t bother stopping the fans back then, though it is a good idea to stop fans from turning for the two reasons mentioned in post 12 and 13.I recently traded a boat anchor Crown PSA 2 for a (somewhat) lighter six channel Rane MA 6 that had been thermalling off on hot, busy nights in the nightclub it was in.I knew the amp had never been cleaned and previously had been in a smoking bar, sure enough&nbsp; several ounces of goo and dust bunnies needed to be cleaned out, now it covers four monitor mixes (biamped drum fill with two channels bridged, and 3 channels normal) nicely for small gigs.Those amps are older than many of the readers here..</blockquote>

[QUOTE="Art Welter, post: 88536, member: 52"] Re: PSA: Blow it out yer amps! The gummed up amps only had thermal problems, which went away when the sludge was removed, and would come back again as the sludge built back up, made me glad my lungs were not in the same environment regularly. None of the fan bearings on the old Peavey CS 800 and Crest amps used in the install ever failed when being blown out even though we didn't bother stopping the fans back then, though it is a good idea to stop fans from turning for the two reasons mentioned in post 12 and 13. I recently traded a boat anchor Crown PSA 2 for a (somewhat) lighter six channel Rane MA 6 that had been thermalling off on hot, busy nights in the nightclub it was in. I knew the amp had never been cleaned and previously had been in a smoking bar, sure enough several ounces of goo and dust bunnies needed to be cleaned out, now it covers four monitor mixes (biamped drum fill with two channels bridged, and 3 channels normal) nicely for small gigs. Those amps are older than many of the readers here.. [/QUOTE]

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