Hi,
I recently inherited my sisters Philips MC150 micro hifi system after she got rid of it saying that 'CD's are so crap compared to an ipod' My micro hifi CD motor had broken, so I took it for myself. I only really use my micro hifi when I want some soft music without the hassle of using my HT.
I set the system up and put a CD in, just wanting some background music. When the CD started playing though, there was very detectable hissing static like sound coming from both speakers. It made listening to the CD difficult at low volumes and was still detectable when the music was quite loud as well. It does exactly the same thing with the tape player and radio as well.
I reconnected all the speakers and tried again, exactly the same sound. I then tried it with another set of speakers, exactly the same sound again. Its not like mains hum, it more like the static sound you get from LP's.
Anybody have any suggestions?