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Remove PCB from metallic casing?

I’m disassembling an old and malfunctioning LG E2360V-PN monitor to see if I can fix it by replacing the capacitors. But, I was met with an unpleasant surprise: the PCB seems to be enclosed in a metallic casing, and I have no idea how to remove it!

I’ve already unscrewed all visible screws but it won’t budge. The bottom side of the metallic casing has a suspicious notch that seems to be holding it in place, but I’m not that sure what to do about it. I could always try to cut the metallic case, but I fear I’ll probably damage the board like that…

Bottom view with notch in red square:

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Top view:

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Any ideas/suggestions are welcome!

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In case anybody from the future finds this page, I managed to solve it! In the end, these little guys where the problem:

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By removing them with a socket wrench the PCB finally got free.

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Did replacing the caps fix it?

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1 Comment:

Actually it didn't! In the end, turns out the problem was the power supply.

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ALONSO CANALES ECHEVERRIA will be eternally grateful.
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