Big stuff first....lots of multiple connections in here, not a lot of room either....
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Beogram 4000 and also BG8002
116 replies
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The two tricky tantalum caps in the multivibrator on off circuit board are also tricky to get out.....
Happy with this and when tested all still working fine.....I have to confess to not knowing what the two sticky backed squares provided in Martins capacitor kit are for, new one on me....Martin?
I'm suspecting the sticky squares belong under the two 2000uf caps......main PCB up next
When replacing the skeleton type trimmers I like to measure the active sides so I can set the new piher trimmers as close as I can for starters, those done and the caps replaced the board is complete
Taking a look at the carriage drive pully, that is undoubtedly buckled, I notice a crack in the collar where the tightening grub screw sits....my guess is that this has been overtightened an some point and cracked...allowing the screw to be tightened further with nowhere to go except pushing backwards and warping the pully wheel out of true...while the crack was open I have gave it a coat of epoxy and let it close up again, will leave it overnight and see if its sorted.....the best this would be to replace it with one of the readily available (on ebay I think) aluminium wheels.
this seller in Lithuania does not say 4000, but maybe the size is correct ?
https://ebay.io/m/oICkfd
Precision turntable tonearm pulley B&O Beogram 4002/04 6000 26.6mm (hole 4.5mm)
https://ebay.io/m/oICkfd
Precision turntable tonearm pulley B&O Beogram 4002/04 6000 26.6mm (hole 4.5mm)
Location: London UK
Our friend has this for half the price....
pully
Using 2500 grit carbourundum paper, little more than rough paper, cleaned the control panel switch contacts both sides particularly on the << and >> switches, in the past I have unsoldered the whole assemblies and gold plated them before putting them back....more of an exercise in indulgence on my part than a worthwhile requirement....the work was chronicled here and is probably in the archives somewhere.
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