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ARCHIVED FORUM -- March 2012 to February 2022
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This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022

 

Beovision 7-40 Mk6

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Stotty1111
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Stotty1111 Posted: Tue, Oct 13 2020 7:46 AM

Hi all

I have a BV7-40 as above, it has worked flawlessly for years, switched on this morning all ok, changed channel, no picture just sound,same with more channels. Unplugged it, left unconnected for 5 mins, reconnected re booted tv still sound but no vision!

What are the potential probs, is it worth repairing(to me yes but realistically) Would it be a dealership job? I live in France , my nearest dealer is about 120miles away.

Thanks for any observations

I work on the KISS principle  -  Keep it Simple Stupid

lawrencejmcook
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Does it also have a blank screen with external sources, or is it just with the internal tuner?
Stotty1111
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No video works, and I don't think its the curtain as the problem started whilst channel changing on satellite box, the tv in solo mode, tuned to French tv exhibits the same prob!

I work on the KISS principle  -  Keep it Simple Stupid

jvezina
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jvezina replied on Tue, Oct 13 2020 2:16 PM

Like the problem reported last week on a Mk5 BV7, looks like a backlight failure. The LCD panels of these TVs have LED strips located on the edge of the panel and these may burn over time.

There are videos  on Youtube about LED strip replacement on Samsung panels.

https://www.youtube.com/watch?v=EZypCE6slYo

The question is: are the B&O technicians willing to do the repair ? For a TV of that price, it is certainly justified.

I own a BV7-40 MkIII and it is still working well. Its LCD panel uses CCFL fluorescent tubes. These may also fail but can also be replaced by dismantling the LCD panel.

Regards,

Jean

 

Stotty1111
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Bizarre, after trying various things I shut the system down and left it unplugged for a period,, rebooted and entered the pin on a black blank screen, tried various items of kit all to no avail, shut the system down from the remote, the stand returned to standby position, re sent tv signal and hey presto the system has been working flawlessly since!

I am at a complete loss as to the prob, maybe the brain got confused/disorganised, who knows, but now i'm a happy bunny again!!

I work on the KISS principle  -  Keep it Simple Stupid

Tucker
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Tucker replied on Sun, Apr 4 2021 6:30 PM
Stotty1111:

Bizarre, after trying various things I shut the system down and left it unplugged for a period,, rebooted and entered the pin on a black blank screen, tried various items of kit all to no avail, shut the system down from the remote, the stand returned to standby position, re sent tv signal and hey presto the system has been working flawlessly since!

I am at a complete loss as to the prob, maybe the brain got confused/disorganised, who knows, but now i'm a happy bunny again!!

I work on the KISS principle - Keep it Simple Stupid

Hey Stotty! I am having the exact same issue as you. Could you tell me more about what you did before you got the TV to work again! I am going crazy trying to figure this out.

Thank you!!

-Tucker

Beosound 9000 MK III, Beosound Century, Beogram 5005, Beolab 8000, Beolab 5000,  Beolab 4000, Beolab 5, Beovision 8, Beovision 10, Beovision 5, Beoplay A2, Beoplay E8, Beoplay H6.

Stotty1111
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Are the fan grills clear under the screen?

My tv failed again, it is now with a repair depot

I work on the KISS principle  -  Keep it Simple Stupid

Pat
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Pat replied on Mon, Apr 5 2021 9:33 AM
Try t-con pcb on LCD, sometimes fuse blows. If fuse dead, replace it. Test the picture - on or off. Still no picture and fuse blows again? Try another t-con. If still no picture and fuse blows again, internal issue within the panel.
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