Beomaster 2400: Lamp Replacements

This post shows my Beomaster 1900/2400 lamp replacement method.

I replace the two volume level indicator lamps with new incandescent type lamps. These lamps are part of the the volume level circuit and need the lamps to be the incandescent type of lamp.

This is the board with the original lamps.

Here is the board with two new incandescent lamps installed.  I source them from Martin Olsen.

Next is the update to the Beomaster 2400 source selection and FM indicator lamps.
Again, here is the original lamp board for the source selection and FM indicator lamps.
I marked the positive side on the lamps I will be replacing with LED type bulbs.

First is the replacement of the three incandescent bulbs for (FM Stereo indication and FM tuning).

Next are the replacement of the source selection indicator lamps with LED modules.
These are a bunch of my homemade LED assemblies. The single ones are for the Beomaster 1900/2400 source indicator lamps. The dual LED assemblies are for the Bass, Treble and Balance position indicators.

Last are the replacement of the incandescent lamps for the Bass, Treble and Balance indicators.
Here is a picture of the board with the original incandescent lamps.

I always change these lamps to LED type lamps.  I often find that the plastic position indicator masks that fit over these lamps are damaged due to heat from the lamps. The LED replacements operate at a much lower temperature so should be better for the long term and are not damaging to the plastic indicator masks.

In the next post I will reassemble the Beomaster 2400 next and check the results of the restoration work so far.

Beomaster 2400: Bass, Treble and Balance Slide Controls

The tone controls and balance sliders of this Beomaster 2400 felt good and appeared to be okay.  Closer inspection of the Bass control slider revealed some suspicious looking contact attachments.
That being the case I opened up the Bass control slider and sure enough the plastic bridge that holds the contacts had broken tabs.

The failing contact mounts on these slider control bridges are present on almost every Beomaster 1900/2400 unit I have encountered so far.

Fortunately Martin Olsen makes replacement bridges that will fix these sliders. I will use another set to restore this Beomaster.

Here are the original and replacement bridges side by side.

Here are the slider contacts installed in the new bridge and the slider all cleaned up.

The Bass slider control put back together.

The Treble and Balance slider controls still had bridges with the mounts for the slider contacts intact.
I went ahead and replaced those bridges with new ones however so the controls would feel the same.

Here is the Tone Control & FM Tuner board with the repaired slider controls re-installed.

The lamp replacements are the next step.  After that this Beomaster should be ready for a bench test.