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Ok will do 180 degrees with AMTECH flux on both and no it didn’t anything. I reinstalled R1985 testEd with R2502 Removed and I have 3.42v coming from smc on on pin 1 of the location of R2502 with resistor removes . Is this correct? 3.42v out from pin 49 of smc?
I tested at the location of...
Ok on R1985 on pin 1 =3.3v on pin 2=1.6v
I removed R1985 and measured it is 1k what schematic say is correct. When I power the board with out resistor I get pin 1= 3.3v and pin 2 = 1.6v so the 1.6 is either coming from smc or pch. I get 1.6v from Both pins of r2502 With R1985, R2585 removed. But...
Ok my mistake. When you ask me to short SMC_ONOFF_L to ground and check to see if I had a drop in voltage at PM_PWRBTN_L yes it does drop down to 400mv and then back up to 1.6v and when I said "it did drop down to 400mv and went back up to 1.6v" I was referring to PM_PWRBTN_L
I will check to...
I’m ordering 2 donor boards for this board that just arrived I tested cpu and It seems normal Reading .15v to ground as I remember from a previous board this should be ok. I uploaded the areas that have corrosion I will replace everything around cpu, rtc and smc. What would advice be as to what...
Ok I’m revisiting this board. I have put everything back and same issue the pch is blazing hot. I don’t know why I put “gmux” in the earlier comments but it’s The platform controller hub u1800. I guess my question is How difficult is it to change pch on this board ? Never removed one but I do...
I’m sorry I was Hurricane preparing. no it’s was a bad solder joint. It’s good now r1915 pin2=3.2v checked it multiple times. Touched up the joint. Now on to why my Pp3v3_sus is low
I’m going to check the Level of Q7802/20 voltages.
As you suggested
Hi I have a board missing PM_SLP_S4_L
I also have power u6100 on pins 8,5 but not...
The weirdest thing just happened I made the cord put it to my power supply and it chimed :/ but all my test chargers won’t boot with it. I put my test MagSafe and it MagSafe green light goes out immediately
It’s at 18.4v and drawing 1.13A
I’m not sure what’s going on here these magesafe work...
Ok I’ll try another dc in board I’ve tried several. I have 2 original 85w chargers that I swap back and forth as my test chargers.
But I will prepare a 85w cord with lab power supply and tell you how much current it’s drawing later on today
There was a droplet of corrosion I cleaned up by q7080 when I started also there’s some small corrosion by u7940, u7400 it’s like it hit all the best parts of the board :(
honestly I was gonna change q7080 as soon as I received this board but since its so close to u5701and j5800. I was...