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원문 게시자: cubytus ,

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MiniDisplay Port doesn't work; one chip stays warm during sleep.

텍스트:

Hi fixer community,

I got a coffee-damaged MBP that was brought back to life after professional washing in a sonic washer. I had to change the battery for a non-Apple one, and keyboard, both working well.

However, I just noticed, days later (I don't usually turn off my computer), that a chip stays warm even during sleep. The battery discharge during sleep is also abnormally high (about 70% after 4 hours). I tested in another Mac OS X, freshly installed overnight, reset SMC, and still same result, so it doesn't look like a software issue.

This is a chip marked "Parade SB 8301". From the very few information I could gather on it, it seems linked to the HDMI conversion. Meanwhile, HDMI projection to a LCD TV  doesn't work: the TV just displays "no signal". It is a QFN package, so basically impossible to replace without specialized equipment

Since MiniDisplay and Thunderbolt share the same port, it could be relevant to know that Thunderbolt Firmware Update 1.2 keeps on reappearing in the App Store.

What would cause this chip to stay warm and continue to use juice?

Does anybody has a datasheet for it?

And how would I restore HDMI projection?

기기:

MacBook Pro 13" Unibody Late 2011

현황:

open