Sony KD-55XE7004 - No image, backlight works, new T-Con didn't help
Hi all,
I've got 2 broken TVs these are:
Sony KD-55XE7004
Sony KD-55XE7005
The 05 has a broken panel, everything else works fine, you can still see the image and menu through the cracks a bit.
The 04 displays no image. No Logo, no menu, nothing.
The backlight works fine, all LEDs are on and voltages on every series strip are the same.
The LED indicator blinks whenever I press something on the remote, so it does recognize it.
I was hoping to just swap the broken panel of the 05 with the working one of the 04.
The difference between these models is that the 05 has an interpolated refresh rate of 200 Hz the 04 only has 100 Hz. Both do only 50 Hz natively.
My knowledge of this is not that deep, I assumed that the panel would be the same and the mainboard is just a bit different, is that the case?
I moved all three boards (Mainboard, T-Con, PSU) from the 05 chassis into to 04 chassis so I don't have to handle the 55” panel but that made no difference.
The TV still turns on fine but still doesn't display anything.
I also tried different combinations of T-Con, Mainboard and PSU swaps but none worked.
The wires were also changed to exclude a failure of these.
I tried the 04 boards with the 05 panel and here they did actually work.
The T-Con seems to be exactly the same, the Mainboard and PSU are slightly different.
T-Con:
04: LMY550FN02 | 17Y_HU11APHTA44L V0.0
05: LMY550FN02 | 17Y_HU11APHTA44L V0.0
Mainboard:
04: 1-981-926-22 | 173657422
05: 1-981-926-11 | 173657411
PSU:
04: APDP-209A2
05: APDP-209A1
I have uploaded some high-res images of everything here.
Imgur Gallery
Can a panel itself just be defective?
There are no signs of damage on the flex cables to the actual panel.
The Tv has just stopped displaying anything from one day to the other.
Do you have any suggestions on what could cause this fault here or what I could test next?
Any help is much appreciated!
I've got 2 broken TVs these are:
Sony KD-55XE7004
Sony KD-55XE7005
The 05 has a broken panel, everything else works fine, you can still see the image and menu through the cracks a bit.
The 04 displays no image. No Logo, no menu, nothing.
The backlight works fine, all LEDs are on and voltages on every series strip are the same.
The LED indicator blinks whenever I press something on the remote, so it does recognize it.
I was hoping to just swap the broken panel of the 05 with the working one of the 04.
The difference between these models is that the 05 has an interpolated refresh rate of 200 Hz the 04 only has 100 Hz. Both do only 50 Hz natively.
My knowledge of this is not that deep, I assumed that the panel would be the same and the mainboard is just a bit different, is that the case?
I moved all three boards (Mainboard, T-Con, PSU) from the 05 chassis into to 04 chassis so I don't have to handle the 55” panel but that made no difference.
The TV still turns on fine but still doesn't display anything.
I also tried different combinations of T-Con, Mainboard and PSU swaps but none worked.
The wires were also changed to exclude a failure of these.
I tried the 04 boards with the 05 panel and here they did actually work.
The T-Con seems to be exactly the same, the Mainboard and PSU are slightly different.
T-Con:
04: LMY550FN02 | 17Y_HU11APHTA44L V0.0
05: LMY550FN02 | 17Y_HU11APHTA44L V0.0
Mainboard:
04: 1-981-926-22 | 173657422
05: 1-981-926-11 | 173657411
PSU:
04: APDP-209A2
05: APDP-209A1
I have uploaded some high-res images of everything here.
Imgur Gallery
Can a panel itself just be defective?
There are no signs of damage on the flex cables to the actual panel.
The Tv has just stopped displaying anything from one day to the other.
Do you have any suggestions on what could cause this fault here or what I could test next?
Any help is much appreciated!
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