ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
Hi everyone
Something I cannot understand, I have bought 2 pairs now of these beolab 2500, and each time the seller says that they were working when shipped.
It cannot be that 4 beolab 2500 on 2 system are all 4 dead, this has something to do with the transport.
Anyone on this ??? No led turning on even plugged directly in the outlet.
That cannot be an aging fault, must be during transport....
LED? There is no LED.
Why don't you just test them with a PowerLink cable?
MM
There is a tv - and there is a BV
Yes, there are LED's. Red/Standby Green/In use And yes, that's a very bizarre problem you describe. Make sure the power cables are plugged into the speakers all the way.
I've had several with a burned resistor in the powersupply. Same sympton.
Hi Beobuddy
Well at first I was looking for something more simple that could happening during transport, but I find very odd that on 2 pairs of speakers all speakers are dead and that both sellers would lie.
This would mean that both sellers used their b&o until both speakers died on them, meaning listening to their Beocenter with one speaker only for monthes or years.
Well it looks like I will have to go through all transformer PCB to find the faulty parts.
Even with or without powerlinkcables attached, a red (led) dot should be visible.
Millemissen: LED? There is no LED. MM
Now I certainly have learned that the BL2500 HAS an led light
Check fuses first of course.
Small resistors are red indicated and can be burned.
Many Thanks beobuddy I have one pair of Beolab 2500 with the same error and you have the right resistor 19 and 20 was defective.
Best regards Jan
1. Are these resistors really only 10 Ohm ?
2. If one blows, does it necessarily follow that the other will ?
Me again !
Just a thought, - Before I replace these resistors (they've both definitely blown), does anyone know whether I should be looking for why they've blown or is it simply that it's probably through age etc. ?
Age? Why? A resistor will still work in 1000 years...
A capacitor will not.
Replace at least C16 220uf...
Thanks for that Die_Bogener,
C16 checked out ok. - Any other components I should check ?
Also anyone any answers to my 2 queries from 02-19-2015 above ?
Just to let everyone know that I replaced R19 and R20 and all seems OK !
Only hope I've addressed cause not symptom !
I have also had to replace these resistors on 3 pairs of 2500s, in all cases in both speakers, very strange
Stuart
hi was it only 10hm (x1 on multimeter) thanks
I have the same symptom on one of my two BeoLab 2500. it does not and I do not have red LED. By cons I have the R19 and R20 that are defective. So a big thank you Beobuddy My question is about the scheme is noted 10! is this 10 ohm resistor? Because my resistances have bars: yellow, gray, black, black, brown logically have to put 480 ohm 10 ohm or 480 ohm (well 470 because 480 found in stores)? thank you very much
Hi everyone and sorry for the text i m french and it's traduction google
my resistor (photo)
for me is not a 10 ohm
Can you confirm please if i buy a 10 ohm or 480 ohm
thanks
You are reading the resistor rings in the wrong direction
It's really a 10 Ohm resistor (brown, black, black, gold). I think you already got the answer in your french post (my french is only very minor...)
The yellow might be a hint because this is a safety - non-flammable resistor that opens if overloaded.. I think they are called NFR (non-flammable resistor)
So you should't use an "ordinary" 10 Ohm.
But - I was opening one of my BL2500 just to find them - replaced by a piece of wire
This was new to me; they look original, correctly bent and inserted. It was serial no 11149xxx.
An older one (08826xxx) had the resistors looking like the one in your picture.
Did they change that in series later on, eventually because of the number of "burnt" safety resistors? Maybe Martin as an expert will chime in ...
hx
thanks a lot.
I 've changed by classic 10 ohm resistors not NFR. it's ok the beolab runs now
I hope that it not will burn . you're scaring me
you think it's important to me to change by NFR?
Well - it's mentioned in the service manual that you have to use the original part only.
If they are your speakers it may be up to you; if you give them to someone else and they make trouble then you are in trouble, too.
In my speakers I've used NFRs from Vishay but they are not easily available. I had to take 100 of them.
The only thing that makes me wonder is that my newest ones don't have any resistors in them, they just inserted a wire bridge here.