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I dismanteled the LCD panel and could check the LED stribes. These are edge stribes with the number for L/H G1LE-400SMC-R6 and for R/H G1LE-400SMD-R6. Unfortunately they are NOT defect.
@jvezina: I couldn’t find any sticker. But I have to say that I didn’t remove the last layer. Nonetheless I could remove the two stribes.Can you find a part number somewhere, search for another brand TV in which the panel is used and then find a YouTube video to explain dismantling the panel itself?
Does anybody know where to look for the part number in the Beovision 7-40 MK6?
EDIT: This video was also quite useful: https://www.youtube.com/watch?v=77tymvTJDxo
This video is quite interesting for my repair attemps. I have to look at the video a couple of times. Despite this is a B&O Beovision there is a SAMSUNG LCD panel inside. I don’t know which one but the video is great.
Thanks a lot. Michael
… Check the service manual for the Beovision 7-55 that has LEDs.
Hello Jean,
I don’t know where to get the Service Manual for the 7-55. In Beoworld.org there is only a user manual available. Any proposals?Michael
… But before, checking if the 24 volt supply to the inverter is present is the first step…
That is maybe a problem. Because the Mk6 has no CCFL but LEDs there is no inverter but a driver board. And I think when one or more LEDs are not working, the whole panel gets no power (24V) for safety reasons. I am not sure about that but I am quite sure.
As I wrote above: PCB03 P005 Pin2 should be 5V but is only 3V!
Regards Michael
Hi Jean,
my 7741 has also trouble with the backlight. Someday during televison the screen went black and never get back again. I sent the TV to my dealer for repairing but he couldn’t fix the problem. So I got the TV back unrepaired.
I read a lot of backlight problems and also watched a lot of youtubes about this topic. In your comment it sounds that you maybe fixed a problem with the backlight by yourself. Do you have any suggestions to dismantling/disassabling the TV in order to get to the LED stribes?
Meanwhile I checked most of the DC voltages of the PCBs compared to the service manual. So far I found only one DC voltage which should be 5V but it was only 3V (PCB03 P005 Pin2).
Thanks in advance Michael
