Even though the scale illumination light bulb was functioning in the Beocord 9000 display, my customer opted for a replacement to avoid any potential issues during shipping. This makes sense because these bulbs are fragile and prone to breaking, especially with rough handling. I prefer to replace all bulbs to prevent future problems.

I performed this procedure before on a Beocord 9000 with a broken bulb, as documented on my blog.

Here’s a visual guide for this unit:

The first photo showcases the original bulb secured by a “cork” that goes through the PCB.

Here’s a view from the back:

This is the PCB I installed, similar to the one used in the Beogram 4000 to replace position-scale incandescent bulbs.

It’s practically the same width as the 5mm bulb used in the Beocord 9000. I used only one red-green LED on this board and bridged the second LED position with SMD jumpers (“000”). Using red-green LEDs is crucial when replacing incandescent bulbs filtered by red or green components, like the green and red scale in this case.

This image shows the LED board placed into the bulb slot.

Here’s the back view. It can be soldered directly to the bulb’s solder points, as the polarity aligns.

Here’s a photo from the test run:

Now, let’s move on to the 7-segment display.