Hi All
Just starting a BG 4002 5721 restoration
at turn on the motor for the sliding carriage starts and moves it to extreme right (stopped position)
The carriage motor just keeps on running try to move carriage - (which cant do any further)
Looking for suggestions to possible cause..
The lamp for the carriage position sensor is blown...(the one that shines through the plastic ruler thing)-- Could this be the problem? -I intend to replace with LED
The Lamp for tone arm position is also blown and will replace with LED- this is the lamp to help tonearm follow grooves..
Need to also find STL file to 3Dprint lamp holder
Transformer , power cap(4000uF ) and solenoid all appear ok
Speed control lamps also blown
No items on PCB placed yet.
Dont know condition of main motor yet.
Can anybody poss help with Carriage motor problem?
Many thanks in advance
George
Thank you to our Sponsors
BG 4002 new restoration Start
7 replies
Check out beolover's videos on BG 400X turntables:
https://www.youtube.com/@beolovervideos
thanks Auric
Will have a look through-- lots of good stuff there..
After further investigation I ma suspecting that a total recap of the control board may be required.....
Cheers and thanks
George
Just to add further inof The carriage motor has a constant 18v applied to it when the turntable is plugged into the wall and power is available..
Any ideas
TIA
George
And further discovery..
my BG4002 5521 seems to have an output board from a BG4004 5526...? underneath control switch panel
I wonder what effect this would have..???
Does it say Beogram 4002 or 4004 on the operating panel?
Does the panel have a connector to the "output" board?
Martin
Hi All
i pulled out the pcb's and sprayed all connections / pins etc with contact cleaner
-SHE LIVES!!
All required now (hopefully ) is a general clean and following issues
a) speed indicator lamp relay etc- 33 not lighting up 45 (45 is lighting up)- both globes measure ok..
b) adjust Arm position sensor so grooves are tracked more accurately - at this time the pickup arm needs to move excessive distance for carriage motor to activate..
c) General lube
d) Lid repair and polish (big job- may look at making a new one in clear acrylic
e)replace cartridge
some measure of relief now
Thanks to those who have offered comments
George
Please Log In to Reply
You must be logged in as a BeoWorld member to post replies to forum threads.
or
Join BeoWorld
Register to access the forums, reference material, and exclusive member benefits — including our monthly prize draw.
Become a MemberDecember 2026 Prize Draw
Gold Members OnlyAs a Gold member you're automatically entered into our exclusive prize draw — your chance to win iconic Bang & Olufsen products. A unique benefit of BeoWorld Gold membership, every draw brings a new opportunity to win something special.
1st Prize
2nd Prize
3rd Prize