depending on what i'm grinding off, my beltsander makes quite a bit of very fine dust which in heavy use eventually shorts out the switch contacts inside it. i suggest the dust is not killing the electronics so much as blocking the signal where it hits the selector and volume control conacts in your older receivers. sure, vacuum out the interior spaces. then get a can of tv tuner cleaner at radio shack and using the tiny straw, blast a few streams through the front panel down the shafts of the selector and volume pots. work the pots thru their rotations and see if your ailing channels spring back to life. and wear a mask while you're working, how many times i gotta tell you, haha. good luck!
Electronics in Dusty Environments
I love to listen to music including in my workshop. I have a pair of outdoor speakers power by an older reveiver & listen to FM only. My problem is the receivers keep craping out...I believe due to excess dust. The last 2 receiver lost most of the left channel. My question is, Can these receivers be easily fixed by myself? It would seem the problem would be minor. How would you go about fixing them. My thoughts are to blow the the insides out with air & is there some kind of cleaner to spray? Where would you spray it? Please be specific as I never done this before. Thanks in advance. P.S I've moved the electronics out of thw workshop to avoid dust in the future.