ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
I have a Bemoaster 4400 I purchased as a backup while I have my other amps on the bench ready for recapping. It sounds fantastic however it looks to be in rough shape - it's missing the Volume slider and the mechanical buttons for Mono, Linear and Loudness - are troublesome. In order to get those buttons to engage, they need to be depressed a few times and while depressing I hear static and scratchiness through the speakers.
I got tired of looking at my fuzzy, scratchy, water ringed, beautiful sounding amplifier so yesterday afternoon I took it upstairs for a good cleaning. I opened it up, checked the solder joints and blew everything clean with an air, next I took the front slider plate off and sprayed CRC cleaner in the buttons while pressing them on and off. I also took some #00 steel wool and lemon oil to the wood on the cabinet. The unit really cleaned up well.
My Issue: After cleaning the buttons with CRC, they work well and there is no more static however the bank of buttons - Mono, Linear and Loudness - no longer engage by depressing them from the front. If I open the bottom of the receiver, I can persuade them to engage using small screwdriver - pulling them out slightly while at the same time depressing the button from the front.
Mechanically and electronically they are working when engaged however it appears that the slot where they protrude from the front of the receiver no longer provides enough travel for them to fully engage. Did something shift? Are the tolerances so close that if they move slightly the buttons won't engage?
Also the button mechanism doesn't appear to be very accessible, without taking a lot of things apart.
Appreciate any help.
p.s. This isn't the first time I've "fixed" a B&O something and had something else go wrong or wound up with extra screws or nuts wondering where the heck they came from. They do have personalities.
It's a fine line between collecting and hoarding, and I'm always dancing on it. Beomaster 8000 x2, Beocord 8004, Beomaster 6000, Beocord 9000, CDX, Beomaster 6500, Beocord 6500, Beogram 6500 CD, Beogram 6500 Turntable, BeoSound 2300, BeoSound 2000, BeoLab 8000, BeoLab 6000, BeoLab 2 Sub, BeoVox S45.2 x4, BeoVox S75, BeoVox S120, BeoVox M150, BeoVox MS150, RL140, BeoTime, BeoCom 1
The whole switch assembly can be moved fore and aft to optimise the action of the switches.
The securing screw's can be seen at each end of the switch chassis,and through access holes in the switch pcb.
Simply loosen(don't remove) them,then move the switch assembly accordingly until correct action is achieved.
Nick
Thank you, I managed to move things around without taking too much apart. I'm back in business, thank you.