Very nice thread, good job and very good photos !  🤒

One thing though; Please do this repair ONLY in an ESD-safe environment.
There's a lot of sensitive circuits and components in a Beolink 7000 and it will only
take the slightest static discharge to do permanent damage.

I am aware that far from all people have a complete prof. ESD-safe electronic workshop at their disposal but, fortunately,
less will usually do.
I would recommend a good wrist-strap connected to a grounding point in the Beolink 7000 as a minimum.
One of the ESD field service-kits available on Ebay and elsewhere would be next step up and definitely worth its small
cost if you are going to do more repairs of this type or similar.
Something like this (random pick at Ebay):

Dillen wrote:

I am aware that far from all people have a complete prof. ESD-safe electronic workshop at their disposal but, fortunately,
less will usually do.

There are a couple of things that will help as well:

• Avoid doing the work in very cold weather, as the dry central heating air will help to accumulate static electricity (this in a Nordic context: +5°C and constant rain is not cold weather...)
• Don't wear a synthetic sweater or other "electric" clothing (cotton is good)
• Keep the cats well away 😁

Once you hear the static electricity, it is up to thousands of volts already. Old MOS technology integrated circuits and transistors may only need 50 volts or so to sustain permanent damage without you noticing it at all.

This is an excellent thread 🤒

PS never solder directly on lithium cells, if you value your vision!

Great advice. Also, I store any boards I'm not working on in anti-static bags. A computer shop is often a great source for these.

Hallo to all of you,

I'm new to this forum and I want to thank you for the very interesting reading.

I own a AV9000 for 21 years now, but as in 1992 I only had the money to buy control center TV and 2 beolab 8000 and beolink1000, I recently bought a beolink7000 on ebay.

As it must be the two way communication does not work, looking for information I found this thread. Thank you!

I want to order the caps from Conrad, but I'm asking myself if there are other caps in the Beolink 7000 that will also have to be replaced, even if they are not related to 2way-communication?

@BO

you are writing :

The five now visible capacitors should be replaces. The two violet ones to the left, the two smd´s in the middle and the green one to the right. This has been described in other threads  so I won't go deep into it.

I searched the forum for other threads, but I did not find any . Some infos were found on the Archived Forum, but the Links posted are dead.

Are there infos I did not find?

I will shortly tell you what are the problems with my BL7000

Battery-pack faulty -> already replace by myself

only 1-way communication

When the remote is lieing on the table it does not "stand-up" on wake-up from stand-by.

Settings are : "MOVE" auto

when I set move to manual and then press the move button the display stands up.

Perhaps you do have some tips and tricks for me

Thank's in advance

jumperger

What are all the capacitors that need replacing? And what value are they?

Is there a service manual available at all?

I have already changed two capacitors ( 680uf - 25v and 220uf 16v) and it still reads no contact.

Davedj wrote:

What are all the capacitors that need replacing? And what value are they?

Is there a service manual available at all?

 

I have already changed two capacitors ( 680uf - 25v and 220uf 16v) and it still reads no contact.

https://plus.google.com/photos/112793489141580542769/albums/5532075977679022401?banner=pwa

/Weebyx

MINI ELEC CAPACITOR 4,7UF 50V''-40/105 GR

SMD ELKO 22UF 16V 85ª STANDARD

RAD, EL CAP 105°C 6,8 µF 63V 5X11 RM2

RADIAL EL CAP 105°C 680 µF 25V10X19 R 

These are the ones I've changed.

So I currently own a BeoLink 7000 and I am having a problem on Step 5.

When I  test it to see it's voltage, nothing happens. [Image in the link below]

https://drive.google.com/open?id=0BwCA79DC4kKvMEtjbzl1aS1vcmc

I noticed that you ordered some parts from Conrad, but they don't ship to America so I am stuck with nothing to do.

Can you suggest an alternative location I can order the capacitors from?

I have also tested my electrolumiscent film and it is working fine.

The same wires that are connected in Step 5 seem to have a short circuit, but the wires are not tangled up. [Image in the link below]

https://drive.google.com/open?id=0BwCA79DC4kKvYjNNbE5JSnNZUHc

I was wondering what could be the problem for that and if there was a solution for it.

jamesbong wrote:

So I currently own a BeoLink 7000 and I am having a problem on Step 5.

When I  test it to see it's voltage, nothing happens. [Image in the link below]

https://drive.google.com/open?id=0BwCA79DC4kKvMEtjbzl1aS1vcmc

I noticed that you ordered some parts from Conrad, but they don't ship to America so I am stuck with nothing to do.

Can you suggest an alternative location I can order the capacitors from?

I have also tested my electrolumiscent film and it is working fine.

The same wires that are connected in Step 5 seem to have a short circuit, but the wires are not tangled up. [Image in the link below]

https://drive.google.com/open?id=0BwCA79DC4kKvYjNNbE5JSnNZUHc

I was wondering what could be the problem for that and if there was a solution for it.

Are you measuring alternating voltage at the backlight ? The voltage for backlight is approx. 110-130v AC, not DC.

Did the backlight work before you disassembled it, or was it completely dead ? I had one with a faulty SMD transistor that caused the backlight to not turn on. Also make sure that the flat cable on the back of the mirror cable, is attached correctly in the holder. Try to unlock it, and take it out and put it back in. This can also cause backlight to not turn on.

Regarding the "short circuit" this is not a short, it is just that you are measuring the connection between the AC transformer that provides the 110v AC.

/Jacob

Weebyx wrote:

jamesbong wrote:

So I currently own a BeoLink 7000 and I am having a problem on Step 5.

When I  test it to see it's voltage, nothing happens. [Image in the link below]

https://drive.google.com/open?id=0BwCA79DC4kKvMEtjbzl1aS1vcmc

I noticed that you ordered some parts from Conrad, but they don't ship to America so I am stuck with nothing to do.

Can you suggest an alternative location I can order the capacitors from?

I have also tested my electrolumiscent film and it is working fine.

The same wires that are connected in Step 5 seem to have a short circuit, but the wires are not tangled up. [Image in the link below]

https://drive.google.com/open?id=0BwCA79DC4kKvYjNNbE5JSnNZUHc

I was wondering what could be the problem for that and if there was a solution for it.

Are you measuring alternating voltage at the backlight ? The voltage for backlight is approx. 110-130v AC, not DC.

Did the backlight work before you disassembled it, or was it completely dead ? I had one with a faulty SMD transistor that caused the backlight to not turn on. Also make sure that the flat cable on the back of the mirror cable, is attached correctly in the holder. Try to unlock it, and take it out and put it back in. This can also cause backlight to not turn on.

Regarding the "short circuit" this is not a short, it is just that you are measuring the connection between the AC transformer that provides the 110v AC.

/Jacob

 

Thank you for the quick response Jacob.

I am in need of this device working so hopefully you will be able to help me with fixing my problem.

I have measured the backliight with both AC and DC and neither have seemed to work out.

The backlight did not work on the device previously, but when I plug it into a 110v AC directly, I can see the backlight working.

I'm not sure what a "SMD transistor" so, it is possible you can specify what part of the device that is, and explain what it does?

I have dismantled every cable on my BeoLink 7000 and have plugged them back in, so I do not believe that this was the problem.

Thank you for clarifying that it was not a short circuit.

I had plugged in the 6v battery into the transformer and there seemed to be no reaction when I tested it.

I figured that either the transformer or the capacitors on the device are not functioning properly, is there any insight you can give me to this problem?

Is there a way to test if the transformer [in the picture below] is functioning properly?

https://drive.google.com/open?id=0BwCA79DC4kKvZnY4QXRoRlVTdHhGY0tBMDlUdEpYSzJEVkpJ

Also, is it possible that you are able to give me the specifications of the transformer?

There seems to be no writings on the device itself to tell me what kind of transformer it is.

Thank you for taking the time to help me with this.

\James