Beovision 7-40 MKI LCD panel defective?

[joupar]

Hello!

I have got a Beovision 7-40 TV, type number 9351. I have understood that this is a Mark I model

It has got no picture at all. Sound comes OK regardless what is the source. I have also noticed that the back light of the LCD panel comes on OK

So, first impression I have got is that it has got a defective LCD panel

What do You think is this TV worth trying to change the panel? It surely seems so, at least when I made some searching on the internet, that this Samsung panel type the TV has got is obsolete, discontinued, not available,…

I would be appreciated also if someone has got some information where to get a new LCD panel on this kind. And also if there is a known type failure other than defective panel which causes this kind of a symptom

Jouni

 

[joupar]

Hi again,

To add information to my post, I have measured voltages on the power supply board. If I understand correctly they are all present: around +400VDC on the main capacitor, as well +23VDC, +23VDC and +5VDC on the stand-by supply…

Jouni

[Tignum]

Hello joupar, I do also think that a repair is the most elegant way, but if you cannot find the issue or a replacement panel, you could maybe find a fully working MkI for little money. It will depend a bit where you live I reckon. Also that panel will be old, so it is a chance, but it could be a cheap way to get a working TV (for now) again. Also a good chance to get an extra Beo4, a higher/lower/wall stand,  another  BeoLab 7. Here in the Netherlands they come very cheap as they are heavy and people want them to be picked up. Just an idea! Regards, Johan

[joupar]

Hi!

Thank You Tignum. That would surely be a very feasible way to proceed. Perhaps I start to look around, if there should be one in the neighborhood here. Within the range where I can go with my own car and with a friend to help carry…

I have as a hobby to fix electronic devices. I got this Beovision 7-40 as a freebie from a lady with whom it had sat years without any use. And I think I now know why it was so…

Jouni

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