BeoGram 4000 tone arm problem...

28 replies
I’m working on a BEOGRAM 4000, which has a problem where the tone arm is not dropping onto a disc.   If I press the ‘down’ button when over a record, nothing happens. I tried moving the solenoid by hand, but it refuses to move more than a few mm.. (There is some corrosion on the linkages,but seems free.. The adjacent larger solenoid is operation fine, and positive acting.. Everything else appears to be working. Anyone got any ideas ?? Is there a fuse or something on the solenoid ?

Location: Cornwall, UK

Obtained HND in Electronics Engineering in 1982. Retired in 2016, and am still 'tinkering'. Have had my Beogram 4000 and BeoMaster 1900-2 since 1984.
Read/view this rom beolover
That's really helpful - Thank you very much.. I'll hopefully get it sorted later today (Seems that the damper is stuck..) Rgds - Gravity G.

Location: Cornwall, UK

Obtained HND in Electronics Engineering in 1982. Retired in 2016, and am still 'tinkering'. Have had my Beogram 4000 and BeoMaster 1900-2 since 1984.
Bummer..  Anyone know how to 'free' a stuck damper ?? I've got it out, and the plunger seems to be stuck solid... Is there any way of actually taking the damper apart ??

Location: Cornwall, UK

Obtained HND in Electronics Engineering in 1982. Retired in 2016, and am still 'tinkering'. Have had my Beogram 4000 and BeoMaster 1900-2 since 1984.
First I would loosen the set screw in the black endcap to release trapped air. If that doesnt help then applying a penetrating oil/WD40 and leeting it soak should free it.
Dont force it.....let it soak, WD40 isn't popular on this site (I think the popular term for it is snake oil ) De Oxit is the cleaner of choice, however i would go for something like 3 in one penertrating oil.....leave it overnight. Craig
Thanks for the help guys, but I decided to 'steal' the damper from a 'dead' 6000.. Works perfectly.. BUT... Now the tone arm moves OK on starting - It will not do anything to return the tone arm to the rest position - OR switch off !!! Must be time for me to check the manual again.....

Location: Cornwall, UK

Obtained HND in Electronics Engineering in 1982. Retired in 2016, and am still 'tinkering'. Have had my Beogram 4000 and BeoMaster 1900-2 since 1984.
Ok.....start by checking the switch contacts on the carriage transfere mechanism, sounds like this unit has been stood idle for a while, they are a little awkward to get at but sounds to me they will need cleaning even if they are not responsible for your problem. Dont adjust any of the position screws. Craig  
The switches are fine.. It's just that no matter whether I press the stop, or the across button (return) - apart from the arm lifting - nothing happens, and no reversed supply to the motor. Maybe I'll have to look at the motor supply circuits... Then my other challenge is to find out why my BeoMaster 1900 wont work.....

Location: Cornwall, UK

Obtained HND in Electronics Engineering in 1982. Retired in 2016, and am still 'tinkering'. Have had my Beogram 4000 and BeoMaster 1900-2 since 1984.
A very high percentage of problems experienced with these decks result from switches, either on the control panel or the transport slider. A switch out of position be it open or closed will play havoc with the boolean logic control gates, I have chased my tail for weeks trying to locate a problem that turned out to be nothing more than an intermittent sticking contact on a transport slider switch......an issue that had been identified as a possible cause by Dillen at the outset....however as it was intermittent when I tested the switch it worked fine...turned out that the silicone grease i had blobbed onto the plastic nipples (which I thought would help keep them free) was causing them to bind due to the viscosity......thorough cleaning and has worked fine since.......I'm rambling I know ;¬) Craig
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