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Model A1625. 2015 revision to Apple's set-top-box featuring an A8 processor and 2 GB of RAM.

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Short on Logic Board between positive and ground

Hi all,

My Apple TV4 is completely dead. No light when the power cord is plugged in or anything. I dismantled the thing so warranty is also gone, but what I saw when I checked the power supply is that it is working perfectly (outputting 12V). However, when the logic board is connected, the power supply goes down to 0V. After measuring the motherboard, I saw that there is a short between the positive and negative terminal of the motherboard.

Does anybody have any idea if this is a common fault, if or how to fix it, and were a spare logic board can perhaps be found?

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I have the exactly same issue, how did you get on with this? Did you find the short to earth?

Thanks Christian.

par

Same issue here. Power supply outputs 12 volts. Logic board dead. Anyone find a fix?

par

same here, I’m trying to find the cap or ic in short I lift the power management but still in short .

par

Still no one who could fix this? Same issue here :(

par

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Solution retenue

It could be as simple as a shorted capacitor on the logic board. You could try to find it by using freeze spray (or a can of compressed air held upside down).

IMO, a spare logic board would be just as expensive as buying a used 4th gen device so you either try to fix it or simply replace it.

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Its no activity on the power if add 12v and check with thermal camera or frezze spray, thats means its something with the power section, off course can be good have the shematics to find easily the short.

par

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Hi guyz, I found the problem and fixed it. So the problem is 68uf 16V Tantalum capacitor fail. Find this component, and just remove it (replace if you can but I just removed, and it started to work, good luck.

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sadly i have the newest version that dont have this capacitor

par

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