I recently rescued a bunch of vintage B&O hardware from the scrapheap, among it not one, but two Beomaster 8000's that have possibly not been in use for quite a while.
As expected, there are some issues with these receivers I'd like some knowledgeable input on - I am by no means an electronics expert (some messing with LEDs, arduino, basic soldering skills).
The good news: both cleaned up very nicely, have the original remote and they light up.
The bad:
No. 1:
- no sound from either the 4 speaker-outputs or headphones, regardless of the input used
- the volume control worked a few times, then stopped responding
- the tuning dial never worked (both tuning and volume still respond to the remote, so it is almost certainly a failure in the wheels or the processing of the signal from them)
- one defective led in the balance display (not a disaster, just mentioning it to be complete)
No. 2:
- Fully functional for about 10 minutes total, then a triple plopping noise and no more sound, otherwise all buttons and dials still work ok.
Both now have shaking signal needles at a lower signal strength than before no. 2 stopped working (went from 6-7 to wobbling around 4) mpx light flickers constantly and irregularly in tune with the needle and auto tune no longer zones in on channels. Aside from the dials not responding, the issues of both receivers seem very similar. There was no burning smell, smoke or burnt spots inside (the parts I checked, mainly the backend), which I take as a good sign. No.2 had definitely been opened up before at some point, so perhaps it has had at least some servicing done, No. 1 seems completely original to me.
I humbly request your expert input on possible causes and solutions (does this sound like bad caps?). I'd like to get at least one functional again, I was planning to pass one on to a more skilled enthousiast anyway, one of these monsters is quite enough ;)
