I am writing to inform you that I am encountering the same issue with my OLED display. I followed the suggested steps you provided, but unfortunately, the problem persists.
Specifically, the LEDs blink initially, then cease, and subsequently, the fan begins to spin at full speed. However, after this, there is no further response or improvement in the display.
I would greatly appreciate any additional guidance or solutions you could offer to resolve this matter.
Mine was flashing then the fan was spinning full speed for a seconds and now the led is steady but no sign of life …
Mine have a black screen since it’s arrived home … Stiller waiting rma.
Like you said, 1 minute its fash slowly the the fan spin but noting after that !