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    Rossmann Macbook repair notes!

    :) thanks all
  2. L

    Rossmann Macbook repair notes!

    Hi there; I ve heard and even seen some screen shots of some macbook repair notes (a kind of repair guide of most known problems) of Louis Rossmann on social media, I am a member of this group for almost a year and I didn t heard of its existance. My question is: is there any book or guidance...
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    820-2879-B a returning continiously beeping

    Thanks guys for your support till so far. To me the time and money that I am investing on this board is lucrative and beneficial, because while doing it I keep learning. The option to through this board in the thrush will not helps me understand more. To others the situation maybe it is not and...
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    820-2879-B a returning continiously beeping

    I got the MCP from the leverancier, soldered and tested the resistance on the PP3V42 to the ground, Now it is very hign almost 95K. The mac does not beep anymore, the fun is spinning after pressing the power button, but so beeld is showing up. By coincidence I touched the ISL9504 and I burned...
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    macbook air 820-00165-a water damage not powering

    dukefawks I ve got the BV too, how to check that the keyboard is defective?
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    macbook air 820-00165-a water damage not powering

    smiba. It boots up when plugging in the charger without keyboard and battery connected. I ve found the schematics but the BV is only from another A1466 model boards available like 820-3209-a.
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    macbook air 820-00165-a water damage not powering

    I got a dead macbook air 820-00165-a because of a water damage. The customer told me that after he putting it for a while on the rice, he has started it to take a important file from it, then he brought it to me. By trying to dry it he lifted most of the kies of the keyboard. He told me that it...
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    820-2879-B a returning continiously beeping

    aprendiz if you read carefully my question you will clearly understand that it has nothing to do with believing or not of the advices given here on this forum!! The main point of being member of this forum is not just waiting for getting answers and following them blindly eternally. I ve a...
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    820-2879-B a returning continiously beeping

    Ok. Some of you said the issue is a dead MCP, other said CPU or both. I am planning to buy one MCP. The customer has aggreed on this. But before making this step, I want to be sure that indead the problem is the MCP and not the CPU. So please can you give some test point where to know for sure...
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    820-2879-B a returning continiously beeping

    dukefawks you said that the MCP is dead thus a rebal cannot fixed it, but why you said theat the board cannot be fixed. There are may new MCP chips for sales on ebay.
  11. L

    820-2879-B a returning continiously beeping

    dukefawks will this mean that a reballing will also not help?
  12. L

    820-2879-B a returning continiously beeping

    dukefawks you said the MCP89 is dead. Because of the low resistance on the L6995 to GND. Can you clarify this how you came to this conclusion?
  13. L

    820-2879-B a returning continiously beeping

    There are many PP3V42 on schematics. Can you be more specific which one do I need to measure? On L6995 the resistance to GND is 181 Ohm if that what you mean.
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    820-2879-B a returning continiously beeping

    How can I power up the board without using the power button? Because checking PPDD_S3_REG and PPVTT_S0_DDR_LDO are on the bottom side of the board?
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    820-2879-B a returning continiously beeping

    I do have no history about the mac. I ve checked the board with the microscope, nothing suspicious. Fan is starting like I said directly after plugging the adapter. Even unplugging the keyboard it keeps spinning and beeping. But after taking the board out of its case and plugging the board with...
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    820-2879-B a returning continiously beeping

    Hello; I ve got a macbook pro 2010, that continiously gives one peep after each 8 seconds. No beeld on screen The fan begins to spin directly after plugging the adapter. I ve tried many other RAMs. I shut not down after holding pressing the power button for 10 seconds. The same issue...
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    imac 820-3588-A keeps beeping with or without RAM.

    Correction on the above information concerning the VTT voltage, it is 0V67 instead of 0V75. Will it matter?
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