Beovision 8-40 black screen of death!

[NSTU]

Hopefully this question has gone into the correct forum, I wasn’t sure if I was supposed to ask technical questions in here or on the Workbench forum.

As the title says, my Beo 8-40 has seemingly died. I am very panicked. It has been nothing but a total joy to use and I am thinking this is the end of the road. I cannot afford to have it taken to a dealership or repaired professionally, so I’m crossing fingers and toes that someone on here has managed to resurrect a Beo 8 before and has a winning tip.

All I have plugged into the set, is a KPN (Dutch Internet and TV supplier) streaming service box – the size of an Apple TV, hooked up to the hdmi port 1 input. It has worked fine, not issues whatsoever. Then the other day, when I went to switch it on, the sound came on, but no image. If you go close to the TV you can see that the back light has sort of activated, its just black.

I made sure that it was switched on to the usual setting on the remote in case I’d accidentally flicked it onto another setting, but nope – exactly the same as it’s always on, the digital setting. When I flick it to the TV or any other setting (DVD etc) normally white noise image comes on TV as I don’t have anything plugged into it. Nothing. Still black screen no matter what setting, and when I press menu on the remote, nothing at all comes on screen.

So I did the usual when trying to fix this sort of thing. Switched off, held down the on/off switch on the beo 4 remote for a few minutes, turned back on. Nothing happened. Unplugged TV from wall, did the same thing, nothing happened. Unplugged streaming box and repeated. Nothing happened.

Finally just gave up, I left all the cables unplugged at the back of the unit, and left it unplugged at the wall socket, went to bed. Figured I would see if a total power recycle over night might reset it somehow – it worked! PHEW!!!! Huge sigh of relief.

This lasted for 2 days. A couple of days later, the TV was back to the black screen again. Exactly the same issue as before. Tried all the same fixes as before, including leaving unplugged overnight, but now nothing helps. It is continually a black screen when I switch it on.

To reiterate, the unit comes out of standby “red dot” mode into green dot “on” mode, but there is just no picture. The menu function doesn’t work, nor does switching input mode.

As is highly typical of B&O, not trouble shooting section exists in the manual and I cannot find a single thing about this online regarding B&O sets specifically, or any problem like this relating to the Beovision sets.

In short, I feel completely screwed and very sad. It is still the most brilliant TV and I honestly can’t imagine ever needing to change it, but now I feel something serious inside has fried or finally given up.

As far as I can see, there is no factory reset button on the TV. Is there a butting press sequence on the Beo4 remote might factory reset the TV?

All help greatly appreciated. Thanks in advance.

[Stan]

Try a different, non-hdmi input.  I had a similar problem, and this fixed it.  My understanding I’d that the hdmi ports are on a different board.

[Steve at Sounds Heavenly]

Hi NSTU,

welcome to BeoWorld! If changing the input doesn’t help, the back light inverter may be at fault. This is common on the BV8 and the fix is quite simple…if you can get to it. Basically, 6 washers on the ground connection of the inverter need to be changed for star washers to give a secure ground connection.  The only issue is that it can take an hour of dismantling to get to the parts you need to change.

I had the same issue on my BV8-32 and this fixed it, the tv has been fine for 4 years since the repair.

I apologise that I don’t have the disassembly instructions to get to the washers, maybe someone else on the forum can help with this?

Kind regards Steve.

[Keith Saunders]

There is a technical bulletin covering this problem with full details in the Beoworld technical library HERE for silver and gold members.

[NSTU]

Hi Stan! Sorry for the late response. Unfortunately my input devices are all HDMI. For some unknown reason, the TV has started working again. I suspect it might have something to do with the fact that I had been turning the TV off and then switching the plug off at the mains, instead of just leaving it in Standby mode. Since leaving in Standby it seems to be ok again – fingers crossed.

[NSTU]

Hi Steve,

Apologies for the late reply, busy few days.

Weirdly the TV has kicked back into action again. As I mentioned to Stan above, I think turning the unit off at the mains (having put it into standby) might effect it somehow – although it never has in the past come to think of it.

Anyway, as an experiment I’ve just left it plugged in and on Standby, and (fingers crossed) it seems to switch on normally now.

Thanks for your tip though, hopefully I won’t need it!

Best,

Nathan

[NSTU]

Hi Keith,

The problem appears to have fixed itself now but thanks.

(I will note, it is a shame that known probable fixes for problems are squirreled away behind memberships. Hardly in a good natured spirit of helping people really).

[Keith Saunders]

NSTU wrote:

(I will note, it is a shame that known probable fixes for problems are squirreled away behind memberships. Hardly in a good natured spirit of helping people really)

We would not be here at all to help you and other people if members did not pay to become silver and gold members.

Keith..

[NSTU]

Keith Saunders wrote:

We would not be here at all to help you and other people if members did not pay to become silver and gold members. Keith..

Ok Keith

[loureed5]

Well said Keith.

I believe bronze members can contribute many solutions to a Q&A forum, so their membership and input is gratefully received.

However, I believe Beoworld membership should have only 2 levels- Basic and Premium with Premium required for access to user and service manuals.

regards

Noel.

 

[Author]

Posts