Looks like a common problem. Remote powers on power light with only high pitch squeal (and eventually cycling 3x) from the all-in-one board (main+PSU+tcon). No picture no sound. With the rear cover removed, squeal sounds like it came from main board section under the heat sink (which doesn't make sense of course but maybe just due to all-in-one board design) Here is a sound sample, turn up volume to hear.
https://youtube.com/shorts/oc5PQiZkQ8g?feature=share
2 PSU section caps were bulging. Replaced both of these fixed the TV. Spec is 470uF 25V and only reads 120uF after removal.
Here is how to open the back. See the pic showing the plastic fingers on the rear plate clipping onto the metal frame+wire. Do both sides and top first and bottom last. Bottom separates pretty easily with a flat screw driver parallel to bottom face. On the bottom, don't jam it inside where all electronics, wires, and speakers are.
https://www.youtube.com/watch?v=NtQs...l=Paul%27sTVCo
Commenter Lord Xibalba in the following video had the exact same problem which makes me think a common problem.
https://www.youtube.com/watch?v=JXVq...l=TVPartsToday
This TV repair service indicate they've seen quite a few failures on these low age sets (Mine was 2019)
https://www.youtube.com/watch?v=mCle...ellTVRepairLLC
https://youtube.com/shorts/oc5PQiZkQ8g?feature=share
2 PSU section caps were bulging. Replaced both of these fixed the TV. Spec is 470uF 25V and only reads 120uF after removal.
Here is how to open the back. See the pic showing the plastic fingers on the rear plate clipping onto the metal frame+wire. Do both sides and top first and bottom last. Bottom separates pretty easily with a flat screw driver parallel to bottom face. On the bottom, don't jam it inside where all electronics, wires, and speakers are.
https://www.youtube.com/watch?v=NtQs...l=Paul%27sTVCo
Commenter Lord Xibalba in the following video had the exact same problem which makes me think a common problem.
https://www.youtube.com/watch?v=JXVq...l=TVPartsToday
This TV repair service indicate they've seen quite a few failures on these low age sets (Mine was 2019)
https://www.youtube.com/watch?v=mCle...ellTVRepairLLC
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