Beomaster 8000: Replacing the 10mF Reservoir Caps

After doing the speaker switches of the Beomaster 8000, the logical progression is to replace the main reservoir capacitors for the output stages. These 10000uF capacitors often loose part of their capacitance at this age, which causes ripple in the power supply and limits the responsiveness of the outputs during loud impulses. Since new capacitors tend to be considerably smaller, I use 3D printed adapters (on a Makerbot II) for the new 105C types:

At this stage the Beomaster is typically completely opened up:

This are the original capacitors of the right channel:

And after replacement with the new ones:

And here the left channel:

And after installing the new ones:

After I was done I measured the old capacitors, and found that two of them had very low (~2.4mF) capacitance values, definitely out of spec:

I expected this since their tops look slightly bulged, usually a sign for trouble.

The remaining tasks with this Beomaster are recapping the preamp, filter and tone control and the two FM boards, and then fixing the latch of the control panel cover. I am curious how this will turn out...I just received the 3D printed replacement parts for the maimed latch this Beomaster came with, but I can only try the parts out, after I put the Beomaster back together. We will see soon!