Posted February 23, 2023 at 12:18 GMT
Edited February 24, 2023 at 11:05 GMT
First of all, it sounds like you have a muting relay problem (faint sound in the Beolab 8000, assuming that they are connected with Powerlink cables and that the setting is correctly chosen on the speakers). Do you have sound in the headphone socket if you connect a headphone?
Secondly, the Master Control Panel 5500 showing 'No Contact' is only a sign that there is a problem with 2-way communication. The error can either be in the MCP5500, the BM7000 or possibly both. If the Beolink 1000 does not send out signals, I would first suspect that the battery case is not making proper connection to the batteries - it's a common file that is easy to fix.
Regarding the Beomaster 7000's lack of IR response, I would first suspect surface-mounted caps (SMD) on the IR board. But you could start off by simply cleaning the sensors that are bound to be dirty from dust and cigarette smoke.
If you buy another BM7000 there is absolutely no guarantee that you will not run into similar problems or even new problems. they are 35-years old, and they need maintenance, like e.g. a car would not be expected to run for 35 years without exchanging oil, filters, battery etc.
Let us know how it goes.