The Workbench

Re: Beolink 7000 keeps switching on and off

macjonny1 — Tue, 30 Nov 2010 11:57:22 GMT

If you are looking for an LCS I have one. Currently on ebay. Pricey but I would give a discount to a fellow Beoworld member.

Re: Beolink 7000 keeps switching on and off

Blackrix — Sat, 23 Oct 2010 07:18:24 GMT

Check the voltage of the back-up battery on the microprocessorboard.

Re: Beolink 7000 keeps switching on and off

Leslie — Mon, 18 Oct 2010 14:55:37 GMT

Good job MartinM! I have 5x BL7000 now and one of them is still having this issue.

Hopefully the options you mentioned will solve it! Will keep you updated, for sure

Leslie

Re: Beolink 7000 keeps switching on and off

MartinM — Sun, 17 Oct 2010 19:58:38 GMT

@ Leslie, I did a recap and battery replacement and that resolved the issue for me. Can be viewed in this thread here

http://forum.beoworld.org/forums/p/35867/297765.aspx#297765

I would do basic check:
Battery is good and producing 6 volts?
Pin 10 on the ribbon cable is at 5Volts when BL is on and 0 volts when off. If it is, then issue is with the analogue board. If it’s not, then issue is the digital board.
Check with a meter that there is continuity in the ribbon cable ie. No break.
Reseat the ribbon cable.

Next:
If you have two BL’s try compare voltage readings on same parts of the board between the two.

Re: Beolink 7000 keeps switching on and off

MoglesMac — Thu, 16 Sep 2010 12:00:36 GMT

My "bad" BL7000 still works all fine in charger but to be honest I dont use it that much since i have a "good" BL7000 that is my joy :). One downside with the "bad" BL7000 that im abit worried that I never "execise" the battery in the same fashion I do with my "good", since the "bad" mostly sits in the charger.....

Cheers

Jesper

Re: Beolink 7000 keeps switching on and off

burantek — Wed, 15 Sep 2010 11:49:51 GMT

burantek:
Well, I guess I'll be relegated to using it in the charger as well!

I never put my BL7000 back together after these threads -hoping that someone might have a solution.

In the meantime... any confirmation from users that the BL7000 remains stable when used solely from the charging stand?

Re: Beolink 7000 keeps switching on and off

burantek — Mon, 14 Jun 2010 12:08:25 GMT

Leslie:

Sorry guys, the cap 680uF replacement was no succes!

Have replaced all capacitors (11 pcs) but the on/off issue remains.

Gonna use that one for my LCS7000 wall charger

It is amazing that so many of these have this same common fault!

Well, I guess I'll be relegated to using it in the charger as well!

Need to find a LCS -that would be best!

Re: Beolink 7000 keeps switching on and off

Leslie — Sat, 12 Jun 2010 05:59:37 GMT

Jesper, I wish I had one. Funny enough I never installed the LCS7000. It just sits in a box and still don't have any purpose for it. That's because of the Xtra speaker I got with the LCS7000. ALthough I got many advises how to connect this kit, I still haven't got the chance to install it.

Re: Beolink 7000 keeps switching on and off

MoglesMac — Sat, 12 Jun 2010 05:36:49 GMT

@Leslie, sorry for bugging you again but saw now that you had a LCS7000 (very nice indeed) and I personally have a floorstand for my BL7000 and I think that you and I have same powersupply. I hope that maybe you have the wallplate to mount the powersupply on a wall. From the powersupply it seems too be a round thing with two "hook".

I hope maybe you have photo of it, if you have it that is, so i can try make my own :D

Cheers

Jesper

Re: Beolink 7000 keeps switching on and off

MoglesMac — Wed, 09 Jun 2010 11:16:37 GMT

Awww ok, I will prob also use one of my defect BL7000 in a similar way, but always in a tablecharger hehe.

Thanx for testing it out for me and i will in a near future try to change the piezo since I have found a swedish provider to the right size :D.

Again, thanx

Jesper

Re: Beolink 7000 keeps switching on and off

Leslie — Wed, 09 Jun 2010 10:03:46 GMT

Sorry guys, the cap 680uF replacement was no succes!

Have replaced all capacitors (11 pcs) but the on/off issue remains.

Gonna use that one for my LCS7000 wall charger

Re: Beolink 7000 keeps switching on and off

burantek — Fri, 04 Jun 2010 12:38:50 GMT

My apologies for any confusion regarding the CAP/FUSE... but it looks like we are back up to speed!

Looking FWD to favorable results!

Re: Beolink 7000 keeps switching on and off

Leslie — Fri, 04 Jun 2010 12:36:41 GMT

tournedos:
You can't test them properly with a multimeter. The property that most often fails is not the capacitance, but ESR. You'll need a special instrument to measure that. Even if the capacitance value is still correct, the capacitor can be totally useless for its purpose if the ESR value has risen a lot from original, and that is what usually happens to aging electrolytic caps.

That's (hopefully) good news Mika, thanks, maybe I'm lucky!

Now I have to look for a 680uF cap.

Re: Beolink 7000 keeps switching on and off

tournedos — Fri, 04 Jun 2010 12:27:01 GMT

Leslie:

Sorry, some miscommunication. I have not replaced the blue cap because my Multimeter has a capacitor option which showed that the capacity was okay! However, maybe I should give it a try to replace it with a "brandnew" one. Who knows, will let you know!!!

You can't test them properly with a multimeter. The property that most often fails is not the capacitance, but ESR. You'll need a special instrument to measure that. Even if the capacitance value is still correct, the capacitor can be totally useless for its purpose if the ESR value has risen a lot from original, and that is what usually happens to aging electrolytic caps.

If this cap is a known troublemaker, don't waste too much time diagnosing it, just replace it

Re: Beolink 7000 keeps switching on and off

Leslie — Fri, 04 Jun 2010 11:55:45 GMT

burantek:
Leslie had replaced the cap (had other issues as well) and it DID NOT resolve the ON/OFF problem.

Jaff,

Sorry, some miscommunication. I have not replaced the blue cap because my Multimeter has a capacitor option which showed that the capacity was okay! However, maybe I should give it a try to replace it with a "brandnew" one. Who knows, will let you know!!!