Dead "AR1 536" chip in Pioneer BDR-S09XLT

I have found a Pioneer BDR-S09XLT Blu-ray drive which has a dead buzzy hot chip.
The model of the chip is " AR1 536 " but I can’t find any datasheet or replacement for it.
Can someone help me? The Blu-ray drive uses Renesas chipset.

Unfortunately it looks like it might be a custom part… I could not find anything that matches that, despite trying several variations of the text marking in a search engine.

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