After the display PCB of the Beomaster 8000 was happy again, I focused on getting the basics on a sound footing. This means doing the processor board upgrade and a full recap of the power supply. So I started with the power supply PCB and replaced all electrolytic capacitors with 105C-grade capacitors from main Japanese manufacturers. Here are a few photos:
Power supply PCB extracted before recapping:
After recapping:
And installed:
After this was settled, I looked into the shielded microcontroller compartment to look into the B&O recommended upgrades. This is what I found:
It is obvious that this board came already with the jumper wires installed. These serve to bridge the often problematic vias, which are the main cause of operational inconstancies such as sudden stand-by or turn off of the output stages. Therefore, all I needed to do was to replace the two decoupling capacitors on this board. Here is a picture after putting the new caps in:
Next step is to open up the heat sink cover and replace the speaker switches and the four 10mF output reservoir capacitors...they seem to bulge a bit, a sure sign that they are about to go.
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