Cleaning and lubricating the BeoLink 7000
Although the manual states that the need for lubrication is negligible, it is always best practice to clean and lubricate the mechanical components to minimise wear and tear. Lubrication allows the parts to remain in an optimal operational state for an extended period.
Since I encountered issues with a Beolink 7000 where the panel remained stationary despite the motor (9017) running, I decided to investigate it.
This post mainly focuses on the mentioned problems, but will also cover which passive components to replace on PCB01.
The mechanical components responsible for lifting the display are found beneath PCB01. The components to clean and lubricate include a gear wheelset and bar, as seen below.
To gain access to PCB01, remove the four screws and plugs (9041) from the bottom part of the remote.
After opening the remote, it became clear that the problem was due to a worn belt. I recorded a video of the belt and gears in action, and you will see that the belt is simply slipping off the wheel.
All the gear wheels and bar were disassembled, cleaned and relubricated, as seen in the photo series below.
New grease was added to the guide rail (9035). I use lithium grease since it is designed to provide long-lasting protection against oxidation, corrosion, extreme temperatures, and wear and tear. Please take note of the small washer and install it as shown below.
The old belt (9005) was worn, as you can see by comparing it to a new one, so a new belt was installed. The belt is made of NBR and measures 33 mm x 1 mm. After thoroughly cleaning and lubricating, all the parts were installed.
The electrolytic capacitors were replaced with new high-quality 105° capacitors. The TR5 fuse was replaced with a similar 1A/250V fuse.
I’ve noticed that the battery wiring always seemed to oxidise, so to ease the process, the wiring was also replaced when installing a new battery.
At last, new 3D-printed shafts (9007) were installed. The original shafts had deteriorated, resulting in the switches not activating and the display not lifting.
Cleaned, assembled and ready for use! If you would like, you can download the 3D model of the shafts here.