Beolink 7000 back light and recapping.

59 replies
BO
Offline
bos00
Bronze
Posted November 22, 2012 at 21:05 GMT
#2195530

I received a package with some components from Conrad.

 


My Beolink 7000 with very weak back-light.



Assistant

 

1. Remove the two screws

 

2. Remove the cap.

 

3. Remove the last two screws.

 

4. Remove glass panel, don´t touch the inside. Be aware that the small four corner nuts don´t fall out.

 

5. Test the voltage. Should be around 130V

 

6. Disconnect display pcb from the other units. Be gentle with the ribbon cables. 

 

New electrolumiscent film.

 

Testing

 

7. Slide fixing rails to the left and remove them to release the LCD front frame. 

 

8. Remove front frame

 

9. Unsolder old film.

 

10. Unfold LCD display. Try not to touch the surfaces, especially the inside. Be very careful with the "rubber" profiles still on the glass. Those are the actual leads from the PCB to the LCD, if the will be miss positioned or contaminated with dirt dust or grease you will get an improper or faulty readout from the display.

 

11. Remove the luminescent foil. It's attache with two stripes of double sided tape on the backside.

 

Old and new.

 

12. Mark the size. Assure that you get the lead in the same position.

 

13. Cut it to correct size.
 

 

Ready for assembling.

 

14. Mount the new foil in position with two stripes of double sided tape on the back side. put the leads through the holes in the PBB.

 

15. Solder and reassemble in opposite order as the disassembling.

 

16. Testing....I do believe it's working...good...
 

 

17. Adjust the LCD contrast.
 

 

Potentiometer for contrast adjustment of the LCD.

 

18. And now the recapping, unsolder and remove tin housing. 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.
 

 

19 Prepare the new components.

 

 

20. Soldered in place.
 

 

21. All components changed. Be careful with the small smd´s, the can be tricky to solder due to its small size. I also changed all other electrolytic capacitors. Not necessary now but just precaution.
 

 

22. Reassembled and working perfect again.🙂
 

 

 

EL
Offline
elephant
BronzeFounder
Posted November 22, 2012 at 21:13 GMT
#2195531

excellent - you are a LEGEND 🤒

L(
Offline
Leslie (archived2)
Bronze
Posted November 22, 2012 at 21:44 GMT
#2195532

Now THAT'S what I called a workinstruction! My great compliments to you Bo🤒

Please post others you did with your B&O gear (I know you did)👍

L(
Offline
Leslie (archived2)
Bronze
Posted November 22, 2012 at 21:51 GMT
#2195533

Can you show us the BOM (Bill of Materials)?

BO
Offline
bos00
Bronze
Posted November 23, 2012 at 07:28 GMT
#2195534

BOM, I bought these from link but they ara aslo avalable from link with the same product id.

 

Produkt

 

Antal

Pris

Summa

link
[Product ID: 184030-I5]
Leveransstatus: I lager

1 Styck

79:00 SEK

79:00 SEK

link
[Product ID: 460508-I5]
Leveransstatus: I lager

2 Styck

9:00 SEK

9:00 SEK

link
[Product ID: 421509-I5]
Leveransstatus: I lager

2 Styck

9:00 SEK

18:00 SEK

link
[Product ID: 445491-I5]
Leveransstatus: I lager

3 Styck

9:00 SEK

27:00 SEK

link
[Product ID: 445099-I5]
Leveransstatus: I lager

1 Styck

9:00 SEK

9:00 SEK

 

 

VA
Offline
Valve1
Gold
Posted November 23, 2012 at 16:06 GMT
#2195535

Great post Bos00 !

My B&O Icons:

BeoCenter-9500.png BeoCenter-9500.png
Beoremote-Beo4.png Beoremote-Beo4.png
Beovision-10.png Beovision-10.png
Beotime.png Beotime.png
Beosound-9000.png Beosound-9000.png
Beomaster.png Beomaster.png
Beogram-400x.png Beogram-400x.png
Beocenter-2.png Beocenter-2.png
S(
Offline
SEMG (archived2)
Bronze
Posted December 19, 2012 at 15:41 GMT
#2195536

Sorry, Can anyone help with how to get the "Red One line status display" repaired - Totally dead, but two way communication works great when programming Timers ?

mexking
Offline
mexking
Bronze
Posted December 19, 2012 at 15:51 GMT
#2195537

Top job Bo, congrats, I actually lived in Halmstad from 73 to 81

Location: Mexico city

Retired
Printing machine technician
Restored various 1960-70 items
Rock and Roll music
Collecting Vinyl
Restored Jukebox Wurlitzer 1050
BO
Offline
bos00
Bronze
Posted December 19, 2012 at 16:58 GMT
#2195538

Søren Mexico wrote:

Top job Bo, congrats, I actually lived in Halmstad from 73 to 81

Interesting, I moved here -84. I bet you miss the rainy winters 😕

Regards

Bo

Peter
Offline
Peter
Gold
Posted December 19, 2012 at 17:42 GMT
#2195539

Staggering! Wonderful job and beautifully presented. I am deeply impressed.

My B&O Icons:

BeoCenter-9500.png BeoCenter-9500.png
Beoremote-Beo4.png Beoremote-Beo4.png
Beovox.png Beovox.png
Beovision-11.png Beovision-11.png
Beotime.png Beotime.png
Beosound-Stage.png Beosound-Stage.png
Beosound-Moment.png Beosound-Moment.png
Beosound-5.png Beosound-5.png
Beosound-2.png Beosound-2.png
Beoremote-One.png Beoremote-One.png
Beoplay-Portal.png Beoplay-Portal.png
Beoplay-Earset.png Beoplay-Earset.png
Beomaster.png Beomaster.png
Beolit.png Beolit.png
Beogram-400x.png Beogram-400x.png
Beocenter-2.png Beocenter-2.png
or
BeoWorld Gold Membership card
Join BeoWorld

Register to access the forums, reference material, and exclusive member benefits — including our monthly prize draw.

Become a Member

December 2026 Prize Draw

Gold Members Only

As a Gold member you're automatically entered into our exclusive prize draw — your chance to win iconic Bang & Olufsen products. A unique benefit of BeoWorld Gold membership, every draw brings a new opportunity to win something special.

View Prize Go For Gold