Search results

Not RIP!! :p https://www.youtube.com/watch?v=81kmdfdLuag

Yes they will

I don't do any type of forwarding of purchases of equipment. Components is donor boards for most popular models plus LP8550/ISL6259.

It's not a short. These aren't exact numbers, just guessing, but let's say a CPU uses 45w of power. Let's say a CPU runs on 1v of vcore. What resistance to ground do you need in the ohm's law calculator to get 45w out of 1v? http://www.ohmslawcalculator.com/ohms-law-calculator Try it out...

Nvm, that isn't it then. What happened to this machine originally to cause this? Water, bad DIY repair attempt, drop?

This happens to me when the transistor creating PPBUS_G3H gets stuck and sends 16v to PPBUS_G3H. the system will still work but it disables the charger when battery is plugged in so 16v doesn't go to the battery and smoke it.

eBay is for buying, not selling. Do not sell anything on eBay you can't afford to give away for free.

Either one of two things occurred. 1) You injected voltage to find the problem and whatever voltage you injected was too high and killed the CPU. 2) Q7530 sent 12v to the CPU before PPBUS_G3H could enter protection and killed the CPU. Either way, CPU replacement time.

EIther bad SMC or corrosion under it as duke said.

Tap U9600 and tell me if this is directly affects the issue.

what do you get on BKL_PWM when the board is working vs. when it isn't?

First fan spin, then CPU vcore. After hitting power do you get the other S0 rails? PP5V_S0, PP3V3_S0, etc. CPU vcore comes after all of that. I am guessing your problem is you are missing PP5V_S3 and everything after.

Use a known good display assembly.

if pp3v3_s5 is power cycling something up the line is shorted to ground.

Replace L3407. It can measure fine on a meter but still not be sufficiently well to pass high speed data.

That resistance to ground combined with the location of corroded probe points leads me to believe trashed MCP89u

PCB short is more common on non-liquid damaged boards in my experience because there is nothing to damage the top layer components.

my best guess is the CPU doesn't like being boiled as a result of the fan not kicking in as quickly as it did on prior years.

Tap U9600.

run EFI ASD and find the sensor reading -124 celsius.