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2011年初期のモデル。モデル番号はA1278 / 2.3 GHz i5 or 2.7 GHz i7 プロセッサー。

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Replacement Battery not recognized - Black X

After liquid damage to my Early 2011 MBP, I replaced my old 820-2963-B board with another board (same model number) from a Late 2011 13" MBP. I can power the computer on while it's plugged in and the MagSafe has a constant green light. However, the battery icon had a black X over it. I replaced the battery with one from amazon and installed it today. The icon still has a black X and cannot run off of the battery alone. I reset the SMC and reseated the battery. Still nothing.

The battery indicator lights on the side also do not work. I tried to run it with the BIL disconnected but the battery is still not recognized.

The replacement board I bought was refurbished I believed and guaranteed to work by the seller on eBay. The battery I purchased was from amazon and is a Siker.

UPDATE: The X has gone away and now shows the Lightning symbol over the battery icon but it remains stuck at 0% and says that the battery is not charging. Here is my information from coconutBattery:

Current charge: 0 mAh

Max charge: 0 mAh

Design capacity: 0 mAh

0 cycles

Battery Status: Good

Battery Temperature: -273.1 degrees

Battery Failure: None

Charging with: 0.0 watts

UPDATE 2: I do not know if this helps but I ran an extended Apple Hardware Test and came up with the error code 4SNS/1/40000000: VDOR -18.707. I know this is some sort of Voltage DC sensor. I did not replace my DC-In when I replaced the board and am not sure if that is where the sensor is located.

UPDATE 3: I replaced the Battery Indicator Lights but they will not turn on at all. However, the AHT no longer reports any errors and the System Profiler now comes up with a power page (whereas before I replaced the BIL it did not). Techtool Pro 8 does not recognize any sensor failures either and reports that the battery passed it's test. It still does not show up in coconutBattery and continues to have a black X.

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Im going to guess the BIL connector may be faulty. The temp reading is way off which the SMC may be shutting the charging circuit off because of it.

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So what you're saying is I need to replace the BIL in order to be able to charge? Also, I do not know if this helps but I ran an extended Apple Hardware Test and came up with the error code 4SNS/1/40000000: VDOR -18.707. I know this is some sort of Voltage DC sensor. I did not replace my DC-In when I replaced the board. Could that be it?

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Im not 100% if their is a sensor on their or not but it wouldnt hurt.

You are correct it is a voltage current sensor that has failed.

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Well, the logic board I bought it under warranty for now. I just ordered a new BIL so if that doesn't fix it, I'll return the logic board. Would I be correct in assuming the DC-in is not the culprit?

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Replaced BIL. Still does not work. In fact, if I press the BIL button, the computer turns off. Just ordered a Magsafe DC-in board on the off chance that it's the problem since the DC-in board was involved in the spill.

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Ok, if its a liquid damage, there is a high possibility that plug which connects the battery and the motherboard damaged. The pins of the plug may have been damaged due to electric shorts when the pins were exposed to the liquid. You might want to buy the plug and perhaps replace it to the one soldered to the motherboard. It might be the case

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I think you are misunderstanding me, the new board has not been liquid damaged. Unless you mean the Dc-in where the magsafe connects to the board?

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Well, I actually made mistake in to thinking that you didn't replace the battery as well. But my suspicion still remains as there may be other connections where their plug pins might have been damaged due to shortening. Like you said, This may be in the power path from the MagSafe DC to the Battery. So worth checking the mag safe DC in as well.

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Lucas Roberts さん、ありがとうございました！
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