This MBP 15" Retina (2015) is running normal. The only problem is that the fans are often spinning maximum without any hard work for the cpu.
I've already invested a lot in troubleshooting and can't get any further. I don't find any voltage errors or errors in the data lines. So far I haven't found any defective resistors or capacitors.
I have already changed the following parts on the board: U7090 (LT3470AED), C7099, C7094, U7100 (ISL6259AHRTZ).
I renewed the thermal paste and cleaned the board in the ultrasonic cleaner.
I have no experience with this board yet. The removed board without battery consumes about 1.2A on the laboratory power supply. When switching on it goes up 1.7A - 2.1A then down to 1.9A and stays at 1.2A. When the temperature rises, the ampere consumption also rises - up to 1.3A or a bit higher. Are these normal values for this board?
I read here in the forum that this board needs a good battery to boot. So i connected a good battery in addition to the laboratory power supply, the behavior and power consumption did not change.
Can someone give me a tip on how I can continue.
I've already invested a lot in troubleshooting and can't get any further. I don't find any voltage errors or errors in the data lines. So far I haven't found any defective resistors or capacitors.
I have already changed the following parts on the board: U7090 (LT3470AED), C7099, C7094, U7100 (ISL6259AHRTZ).
I renewed the thermal paste and cleaned the board in the ultrasonic cleaner.
I have no experience with this board yet. The removed board without battery consumes about 1.2A on the laboratory power supply. When switching on it goes up 1.7A - 2.1A then down to 1.9A and stays at 1.2A. When the temperature rises, the ampere consumption also rises - up to 1.3A or a bit higher. Are these normal values for this board?
I read here in the forum that this board needs a good battery to boot. So i connected a good battery in addition to the laboratory power supply, the behavior and power consumption did not change.
Can someone give me a tip on how I can continue.
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