Beolink 5000 E-Ink screen repair / mod

37 replies
Guy
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Guy
GoldModerator
Posted August 8, 2022 at 12:48 GMT
#1648249
My experience is exactly as matador's above.  I always try to clean/replace/retighten the zebra strip, and clean the PCB where it connects. I have also tried a new zebra strip with the old screen, which didn't work (same lines missing), whereas a new screen with the old zebra strip did work.

I have probably replaced about 10 screens.

 

 

Location: Warwickshire, UK

My B&O Icons:

BeoCenter-9500.png BeoCenter-9500.png
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Beovision-10.png Beovision-10.png
Beotime.png Beotime.png
Beosound.png Beosound.png
Beosound-Explore.png Beosound-Explore.png
Beosound-Essence.png Beosound-Essence.png
Beoplay-P2.png Beoplay-P2.png
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Beoplay-H4.png Beoplay-H4.png
Beoplay-H3.png Beoplay-H3.png
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pilatomic
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pilatomic
Bronze
Posted August 8, 2022 at 14:32 GMT
#1648250
One full line of pixel missing suggests that indeed one electrical connection to the driver chip was lost, so ordinarily I would jump to the conclusion that the zebra strip is responsible for this, but Guy's experience tells another story !

I am not aware of other common failure modes for this, although damage to the conductive track on the LCD could explain this behavior.

Now I'm getting really curious about this issue ! If you still have one (or more) damaged screen in your possession, and are willing to ship them to France, please PM me.

Location: France

My B&O Icons:

BeoCenter-9500.png BeoCenter-9500.png
Beoremote-Beo4.png Beoremote-Beo4.png
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Guy
Offline
Guy
GoldModerator
Posted August 10, 2022 at 11:31 GMT
#1648284

Location: Warwickshire, UK

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.png Beosound.png
Beosound-Explore.png Beosound-Explore.png
Beosound-Essence.png Beosound-Essence.png
Beoplay-P2.png Beoplay-P2.png
Beoplay-M3.png Beoplay-M3.png
Beoplay-H4.png Beoplay-H4.png
Beoplay-H3.png Beoplay-H3.png
Beoplay-Form-2i.png Beoplay-Form-2i.png
Beoplay-Earset.png Beoplay-Earset.png
Beoplay-A2.png Beoplay-A2.png
matador
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matador
BronzeModerator
Posted August 10, 2022 at 11:53 GMT
#1648285

Location: Paris France

Guy
Offline
Guy
GoldModerator
Posted August 10, 2022 at 12:04 GMT
#1648286
link
link

Location: Warwickshire, UK

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.png Beosound.png
Beosound-Explore.png Beosound-Explore.png
Beosound-Essence.png Beosound-Essence.png
Beoplay-P2.png Beoplay-P2.png
Beoplay-M3.png Beoplay-M3.png
Beoplay-H4.png Beoplay-H4.png
Beoplay-H3.png Beoplay-H3.png
Beoplay-Form-2i.png Beoplay-Form-2i.png
Beoplay-Earset.png Beoplay-Earset.png
Beoplay-A2.png Beoplay-A2.png
Guy
Offline
Guy
GoldModerator
Posted August 11, 2022 at 11:35 GMT
#1648304
For info, here are three of my failed screens, two of which are now in the post to pilatomic. Subject to his investigations, we'll start a new 'Beo4 Screen Failure' thread with any findings!

All the following are trying to display 'RADIO'



 

Location: Warwickshire, UK

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.png Beosound.png
Beosound-Explore.png Beosound-Explore.png
Beosound-Essence.png Beosound-Essence.png
Beoplay-P2.png Beoplay-P2.png
Beoplay-M3.png Beoplay-M3.png
Beoplay-H4.png Beoplay-H4.png
Beoplay-H3.png Beoplay-H3.png
Beoplay-Form-2i.png Beoplay-Form-2i.png
Beoplay-Earset.png Beoplay-Earset.png
Beoplay-A2.png Beoplay-A2.png
Rudiriis
Offline
Rudiriis
Bronze
Posted August 15, 2022 at 07:55 GMT
Edited August 15, 2022 at 08:00 GMT
#1648349
Hi

Please read this

/forum/general-discussion-and-questions/bv7mk3-still-has-problems#post-1873784

/forum/general-discussion-and-questions/beolink-5000---lcd-cable#post-2122553

The display driver address one row or column in the display per track on the heatsealing (the ribbon cable), so when the glue slips on the cable, one row or column is missing.

The glue had a lifetime of 10 years .....

I have contacted Optrex (who produced the ribbon cable) asking them for new ones, so far they have not responded - they see no business for this.

One thing is to get a new ribbon cable - another is to seal this to the PCB and the display

Best regards Rudi
pilatomic
Offline
pilatomic
Bronze
Posted August 15, 2022 at 14:11 GMT
#1648352
Hi Rudi,

Thank you for chiming in on this thread, and hats off for the original design ! I cannot imagine trying to fit that design is such a tight space 30 years ago !

I do understand that the original issue is a degradation of conduction with the ribbon, but as you stated, the complexity of obtaining a new ribbon and the operations required to bond it properly both to the PCB and to the LCD do not make this path viable.

Also the issue is compounded in many cases by the old ribbon cracking, and the LCD breaking free from the aluminum body due to its adhesive foam failing.

However, this does not seem to be the same issue on the Beo4 screen ( cf Guy's previous message ), as no ribbon is involved on the Beo4, and replacing the zebra strip does not seem to fix the issue. Any idea what might be happening there ?

Best regards !

Location: France

My B&O Icons:

BeoCenter-9500.png BeoCenter-9500.png
Beoremote-Beo4.png Beoremote-Beo4.png
Beoplay-H9i.png Beoplay-H9i.png
Beoplay-A1.png Beoplay-A1.png
Beomaster.png Beomaster.png
69
Offline
69er
Bronze
Posted August 19, 2022 at 22:55 GMT
#1648460
Is there still one piece available - i would like to built one beolink 5000 (mine doesn´t show anything on the screen, but works).

Best regards

69er
pilatomic
Offline
pilatomic
Bronze
Posted August 22, 2022 at 13:28 GMT
#1648508
Hello 69er,

I have assembled a couple more kits this weekend, those are available right now, still for 60€ / piece + shipping.

Please send me a PM with your address so we can arrange the payment and shipping.

Best regards

Location: France

My B&O Icons:

BeoCenter-9500.png BeoCenter-9500.png
Beoremote-Beo4.png Beoremote-Beo4.png
Beoplay-H9i.png Beoplay-H9i.png
Beoplay-A1.png Beoplay-A1.png
Beomaster.png Beomaster.png
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