'Dead' BBC Model B+ 128K

[paul.brett]

Hi guys,

I have been given (a la Freecycle) a BBC Model B+ 128K, which although is in visually good condition, has a fault.

When I turn it on I get one long continuous low tone, instead of the low tone and high beep associated with normal startup.

Any ideas where I could look for the cause of the problem?

Paul.

[dongfeng]

Have you tried reseating the ROMs? I vaguely remember that it makes that tone when the bootup ROMs are either missing or in the wrong order.

[bbcmicro]

Also check that the keyboard cable has a sound connection. As DongFeng said, it could be a loose ROM and your problem may be caused by a bad contact.

[carlsson]

I had an issue with insufficient shielding on my BBC Model B the other week (Nige knows the details through PM's) and it just played a long tone. Perhaps the power supply is also a possible source of fault?

Here is a document that was posted on the bbc-micro mailing list week. I don't know if it is of any use for you. There may be other sources as well.

http://homepages.paradise.net.nz/mjfoot/BBCFaults.txt

Mm.. Freecycle.. free computers. Why does nothing like that exist over here?