General Forum

Re: BeoMaster 6500 - loss of stored FM stations

Beobuddy — Thu, 23 Feb 2012 16:00:57 GMT

Minor detail PCD -> = PCF 8583

http://nl.farnell.com/nxp/pcf8583p/ic-clock-calendar-sram-8583-dip8/dp/403908

Re: BeoMaster 6500 - loss of stored FM stations

satmonster321 — Thu, 23 Feb 2012 15:54:35 GMT

Hello,

I agree with others that may be a lithium cell. Other possiblity that the NV-RAM (4IC2 PCD8583) is broken.

If the battery is the problem then desolder the old, buy the battery holder for 16 or 20mm diameter (same as used on computer pcb for BIOS) and put the normal 1620 or 2016 or 2032 cell into this holder. I dit it in my beomaster 5500. The holes in the beomaster pcb were exactly as the pins of the holder. Consider polarity !

Regards

satmonster321

Re: BeoMaster 6500 - loss of stored FM stations

Blackrix — Thu, 23 Feb 2012 14:17:56 GMT

Same thought here. But the lithium cell cannot be simply popped out but is soldered on to the board.

Re: BeoMaster 6500 - loss of stored FM stations

Beobuddy — Thu, 23 Feb 2012 14:06:18 GMT

As Peter mentions, located on the processorboard inside the BM6500.

Re: BeoMaster 6500 - loss of stored FM stations

Peter — Thu, 23 Feb 2012 12:20:51 GMT

I think the lithium battery may need replacing.

BeoMaster 6500 - loss of stored FM stations

ferrari458spider — Thu, 23 Feb 2012 11:35:58 GMT

I have a complete B & O 6500 system purchased brand new and including an MCP6500.

When I try to store FM stations, assigning them the numbers I choose, eveything is fine unless I switch off the mains power when all the pre-set stations are lost. Is this likely to be a problem with the MCP6500 or the BeoMaster 6500, or am I doing something wrong?

Kind regards,

ferrari458spider