Beogram 4004 short circuit?

7 replies
KA
Offline
KarlBP
Bronze
Posted September 19, 2023 at 12:40 GMT
#1642700
Hello,

I am new around here (and new to stereo equipment, too) and just got my hands on a sweet Beogram 4004. I duly tightened the transport screws and transported it to my house today. so far so good.

When i got home I loosened the transport screws again, plugged it in to the power, and pressed start. Everything worked, the record spun and the tangential arm started moving over the record. once it is over the record it stops (perhaps as it was about to lower the arm?) and simply stops working, as if someone pulled the plug. Now, i cant get it to do anything, regardless what buttons i press. It is always likely that something could have happened when i was moving it, but it is weird that it worked for a short while.So my question is; what could possibly have short-circuited? I barely did anything.
(also, is there an easy way to know what if anything in the record player is powered?)
JF
Offline
jfrancis49
Bronze
Posted September 23, 2023 at 01:38 GMT
Edited September 23, 2023 at 01:39 GMT
#1658977
Hello Karl,

I am not a real savy tech person, but until someone with more knowledge steps in I will give you my thoughts on your problem. You should at least see a light on the control panel, left side for 33 rpm if the table is getting power when you push the start button. If the capacitors have not been replaced, they probably are the first thing to go after 40 some years. There is a fuse box in the back left side under the top plates that you could check. If a fuse was blown there was probably a good reason however.

Depending on where you live, there are people who could service the table, if you have no basic soldering and electronic skills that might be the best course of action.

John
JF
Offline
jfrancis49
Bronze
Posted September 23, 2023 at 15:18 GMT
#1658983
Also there are mechanical parts that need to be cleaned and properly lubricated that may be part of your problem.

John
SZ
Offline
Scott Zerby
Bronze
Posted January 13, 2025 at 21:43 GMT
#1668190
Hi Karl - I am having the same or similar problem.  We played 5 or 6 LP's and then I think we had a small power blip and nothing seems to work.  What was your course of action?  The "fuse box" on mine appears to be sealed, so I am not sure where else to look at the moment.   Nothing seems burnt or damaged on the board I can see after removing the top plates.
Mark-sf
Offline
Mark-sf
Bronze
Posted January 14, 2025 at 00:07 GMT
Edited January 20, 2025 at 19:45 GMT
#1668192
If you lost all power (no lights or movement) then it is possible that you blew a fuse. These are under a screwed cover in the back left corent accessible from the top. Having said that, the fuse likely blew for a reason. That table is 40 years old and likely needs its electrolytic caps replaced. There are service kits available such as this
HC
Offline
hcraig244
Silver
Posted January 20, 2025 at 11:56 GMT
#1668319
Its unlikely that replacing the capacitors/trimmers/lamps etc  provided within a service kit will resolve your issues, its a very good idea to purchase one and carry out said service...however the fault described above will need a little more investigation to track down. Service manuals are available to silver members on the site along with a wealth of guidance from other members, pictures are a great help too....do you have any experience with test equipment such as a multimeter to check for voltages inside the unit? do you have a multimeter?

Craig
filip_kbh
Offline
filip_kbh
Bronze
Posted January 22, 2025 at 13:46 GMT
#1668355
First things to check would be the belt for the carriage. And the pulley will most likely be cracked as they all are by this time. Get a new one in metal - some people here sell them.

Location: Copenhagen

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