Hi

Just thought I would update you on progress !

re wired MCL cable from BB5500 to xtra speaker box and inra red receiver, tried both boxes and both receivers that I have. No difference, remote only works at approx 1 metre. Tried remote in room where BB5500 is and that will only operate at approx 1 metre. I reckon problem with Beomaster ? Any thoughts

Thanks

tonycox wrote:

No difference, remote only works at approx 1 metre. Tried remote in room where BB5500 is and that will only operate at approx 1 metre. I reckon problem with Beomaster ? Any thoughts

Well, based on the process of elimination...

The IR receiver on the BM5500 in Room A is responding the same way as remote data flowing thru the link system from the IR receiver in Room B.

My guess would be something common for the IR processing... IC1 in the BM? Hopefully, someone will be along that can provide you more specific information.

Thanks

I suppose an alternatve would be to pick up a second hand 5500, or if anybody can provide specific info on the IR processing I would be grateful

Tony

Thanks

Either repair or replace I guess

Tony

Not really helpful as a solution but many moons ago I had a BM5500 that only responded to the remote about 1m away. I took it to Nobby (site member & repair wizard) where we took off the top and attached it to a oscilloscope and we came to the conclusion it had a faulty IC 'somethingorother'. I didn't get it repaired and sold it on as faulty.

Thinking back I know that my particular model was able to be controlled with a BL1000 as the sticker on the back of the BM indicated but can't for the life of me remember if it worked fine with the BL1000.

InB4 either of the Martins come up, I'd say replace all the electrolytic caps in the CPU module as well as the small caps in the power supply and see if it helped.

The IR and MCL data lines go through separate circuitry to separate inputs on the actual processor, but the faults above may affect the operation of the "brains" in general. And I have had both a BM6500 and a BM7000 (all very similar internally) where doing this fixed remote control range problems. I have to admit I don't understand how the range of the remote in the link room could be affected by any fault in the Beomaster, but sometimes it's best not to think too much 🙂

Stonk, the sticker you're thinking may be related to MCL compatibility, see this thread.

Thanks everyone for various theories. I have spoken with our local B&O dealer he is convinced that both remotes are duff, because he is saying both IR recievers are working independant of each other, so it is unlikeley to be the BB55. He is going to lend me a BEO4 remote and see if that resolves the problem, at least this will defenately eliminate the remote problem.

Ill keep you updated on progress.

tournedos wrote:

Stonk, the sticker you're thinking may be related to MCL compatibility, see this thread.

Mika you are of course correct. However my understanding is that some BM5500's had the Beolink sticker/software installed and they could be operated by a BL1000/beo4. Models without the Beolink sticker on the back could only be used with an MCP.

Stonk wrote:

tournedos wrote:

Stonk, the sticker you're thinking may be related to MCL compatibility, see this thread.

 

Mika you are of course correct. However my understanding is that some BM5500's had the Beolink sticker/software installed and they could be operated by a BL1000/beo4. Models without the Beolink sticker on the back could only be used with an MCP.

 

OK, I haven't heard of that - but it's perfectly possible as the BL1000/Beo4 and the MCP use mostly different command codes. These must have been early units in the production though.

Tony, yes it's a good idea to try a known good remote as the first thing. All Beolink 1000s are pretty old by now and often have contact problems especially if the batteries have leaked sometime in the past. I'm not sure how the MCP would get weak in transmission if there's enough power otherwise (display OK?) but you never know.

tournedos wrote:

Tony, yes it's a good idea to try a known good remote as the first thing. All Beolink 1000s are pretty old by now and often have contact problems especially if the batteries have leaked sometime in the past. I'm not sure how the MCP would get weak in transmission if there's enough power otherwise (display OK?) but you never know.

I certainly agree that the first thing I would have tried would be the remotes, even if just refreshing the batteries. However, I took it from the OP's posts that both remotes would act up on occasion and other times be just fine.

Yes the IR circuitry on the BM itself and the circuitry for the link feed are separate... I went after what they both have in common... IC1 as I read it.

I would still like to know if anyone has had issues in link rooms when a plasma is present in another room. I have read (elsewhere) that their emissions can be remarkably powerful and long ranging.