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2.2 GHz (Turbo Boost up to 3.4 GHz), 2.5 GHz (Turbo Boost up to 3.7 GHz), or 2.8 GHz (Turbo Boost up to 4.0 GHz) quad-core Intel Core i7 processor with 6 MB shared L3 cache and an optional AMD Radeon R9 M370X dGPU.

Working machine no image no chime

2015 MacBook Pro that was bought last year in excellent condition. Took fall damage on the left corner and broke the display, but I could power it on, made a time machine backup, and the insides operated just fine. I did a total transplant into a refurbished display and used upper case assembly. Now, it won’t turn on, no chime, no image, but the fan spins. I get a green light on the charger, battery is connected. I double checked my cables, but I’m at a total loss.

This is not my first repair, I’ve successfully replaced other MacBook elements (display, keyboard, battery). I feel like I may have given this board static shock, or perhaps I was too rough on one of the elements. I made sure to touch my metal chair often. I’d hate to have to spend another $200 for a board repair after I made it this far. ?

Is there something I’m missing?

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What was the source of the part? Give us as much detail on what you got and how you transferred things.

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I did some troubleshooting and discovered that my replacement screen had a dead backlight. As for the chime, a PRAM reset did the trick (Opt + CMD + P + R).

Replacements were from eBay. I have a new part coming in the mail now.

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Great work!

That makes sense.

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I have a similar issue... no chime, display doesn't come on. I tried the PRAM reset with no results. Any thoughts would be appreciated.

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Austin McNair crwdns2934231:0crwdne2934231:0
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