Hi,
I've recently acquired a BeoMaster 900M. Stereo lamp works, but it take a while to light up. Repeats the warm up process after the cold-start again. I think some caps around decoder need replacement.
However I have trouble trying to pry it open. There is no complete service manual on the web. I take out 4 slot screws at the bottom (for most of the 60-70s receivers the 4 will do the trick), then i don't know what to do. the chassis doesnt seem to slide forward or backwards, in both directions it seemed to be blocked by the case.
I've seen pics of the nakes chassis, and it seems pulling out the knobs or removing any panels are unnecessary. (http://kvdijke.radiocollection.net/en/bang_olufsen/beomaster_900k.html) but the said pic is for 900k the radio version, and mine is 900M without speakers (compact case)
Please advise.