Over the weekend, I finished the seven-segment display repair. The LEDs performed without issue during a 24-hour burn-in test. I double-checked the LEDs after reassembling the display using my specialized test equipment. My test setup has two parts for evaluating the Beocord display. The left side tests all LEDs illuminated simultaneously, while the right side allows me to test each LED channel or individual LED by adjusting jumpers.

During individual LED testing, I observed some light bleed from the middle “dot” LEDs into the neighboring segments. This bleed would be especially noticeable when the Beocord is in standby.

After verifying the SMD LEDs were properly centered within the light guide and not making contact with its base, I remembered the board had three trace repairs. The thin repair wires were likely preventing the light guide base from sitting flush. To address this, I applied a thin layer of black automotive weatherstrip adhesive to the bottom of the light guide, ensuring none entered the LED slots. This adhesive also served to secure the light guide, which was necessary because its three white plastic mounting pegs had to be removed for disassembly. Unfortunately, the adhesive’s short working time prevented me from documenting this step with photographs.

This solution worked effectively, though the adhesive’s quick setting time added some pressure during assembly. To further prevent light bleed, I masked off the back of the assembly, similar to Beolover’s display repairs. I also added a coat of black 1-Shot enamel paint to the outer edges of the light guide.

Finally, I attached the red display cap using black hot glue.

Here’s the outcome:

In the lower right corner of the image, you can see the Beocord’s lithium battery, responsible for preserving user-stored cassette calibrations. Currently, the battery is soldered to the board, requiring desoldering for replacement. Though the battery tested fine, I opted to install a battery holder for easier future replacements and to mitigate the risk of battery explosion during desoldering.

Here is the modified Beocord battery:

With the Beocord buttoned up, I can now move it to the test bench. There might be a few minor adjustments before returning it to its owner, but we’ll see what testing reveals.

This frees up my workspace to begin the Beocord’s counterpart – the Beomaster 8000. The next stage of this restoration project involves a preliminary assessment of the electronics before diving into the work.