Is there a way to recover data from a completely dead oneplus 7pro?

My phone went dark suddenly.

Forced restart is not working. Sometimes it can show android and oneplus logo for a few seconds before going to completely dark again. During those times, there is a small chance of showing banding-pattern lights on the screen with those logos.

I have tried a local repair shop, where battery and screen are replaced for a test.

Nothing really changed.

Motherboard malfunction is suspected.

I don't need the phone come back to life right now. (It would be good though)

But really would like to at least salvage some data from its storage.

Is this possible?

Thank you.