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Showing results for tags 'hum'.
I will admit it's been about five years since i fired up the ole' classic. When I tried to last night, there was a disturbing loud humm (electrical sounding) coming from the PSU area. I opened her up and all the boards are good, no exploded caps or PRAM batteries that I could see. Of course I don't know much about CRT tubes or PSU's so i left those alone not wanting to electrocute myself. Has anyone encountered this before? I do have a local electronics guy who is a wizard with soldering and electronics and has been doing it professionally for 35 years. If this is somethin