I have a Beocenter 7002 similar age to your set, my energy saving bulbs send enough interference to switch set on or off. This usually happens < 2 minutes after lights are switched on.  Different signals as the bulbs age, often just the "wait" light flashes,  Of course it is possible there may be other faults in the set or remote control to cause this.

   John.

 

 

Lee

Had the same problem a few years ago - my BM8000 would simply switch on for no apparent reason.  In my case it turned out to be a problem with the remote.  Removed the battery from the remote and the problem stopped.

I found that the battery voltage was low, so I cleaned the terminals and put in a new battery - problem disappeared.  Now I always remove the battery from the remote when I don't intend using it for a long time.

Check to see if this solution works for you

Regards

Geoff

Hi Guys,

Well that's the third time the BM8000 has turned itself on. It's not the remote as I don't have a terminal 8000 just a IR code converter and the Beo4 and that was unplugged from the power.

I don't think it's interference on the power lines as it's plugged into an expensive surge suppressor and power line conditioner.

This time it started up on radio P2 and it was P1 last time.

Any ideas?

Lee

Could be an unstabile 5V supply to the processor.
There is a capacitor fitted to the 5V regulator on the small right side cooling fin, 10uF or so, I've seen this
little component cause many different issues.

Martin

Hi Martin,

Thanks for the reply. The 10uF cap was replaced recently so I don't think its that... Any more suggestions?

Lee

I had the same issue a few months ago before I'd finished my restoration, never found the exact cause but after I changed the regulator and cap, also under the cpu can resoldered most connections, changed cap and made recommended bridges it seemed to resolve it, although if I remember right I was in there to try and solve an intermitent tuner issue where it would stick on auto tuning( but fine on manual ) . Never did resolve that and still remains a mystery but it's never turned itself on since.

i think the bm8000 really wanted a timer fitted😂

 

I think I'd added a 100nf ceramic cap and changed the regulator 6 ic4 just to be sure instead of just replacing the cap like for like

jason

The 5v regulator and the cap are new. Is that 100uf cap in addition to the 10uf cap Jason?

Lee

Nf not uf

its in addition

jason