Search results

PM_SLP_S3_L is 3.32v

a 820-3437 board has orange light on the charger, all the S5, S3 and S4 rails are present except PP3V3_S4SW_SNS U8050 gets PP3V3_S5 but PP3V3_S4SW_SNS_FET_R and SMC_SENSOR_PWR_EN are missing there is alsono short on the line

dear sir Thanks a lot for the information it's very useful.

the problem is that I don't have a o-scope, got to buy one very soon,

the board has orange light on the charger and these rails are present: PPBUS_G3H PP5V_S5 PP3V3_S5 PP3V3_SUS but there is no sign of S3 and S4 rails I've already checked for a short to ground on them and there is no short nor a burned or damaged prob point. ,

Could you please help me understanding one thing, As I understood from your previews explanations 5 volt rail and 3v rail are created by the same component. and an other component ( the SMC i think ) decides which state should become enable ( S5,S4,S3 and S0). Am I correct? An other thing is...

I have noticed that the SSD gets worm when it's connected to the board and also when it's connected I see that the power supply uses 0.1 amp and when I disconnect the ssd from the board than amperage drops back to 0.

SMC_DCIN_VSENSE is 2.5v and PPDCIN_G3H_ISOL is 17.05v PP3V3_S5_AVREF_SMC is 3.29

chgr_amon is 0.089v and chgr_bmon is 0.1V I can't. find any the SMC_AVREF not in the schematics nor board view. I tested with an external HDD the lights burns

no unfortunately nothing on external monitor not via HDMI nor Thunderbolt

the USB is active and I get light even when I disconnect and connect it to the board

Dear Sir it turns on when I bypass the SMC and fan spins very fast. but no image what should I do next?

Thanks a lot for your understanding. the PP3v3_S4 is present but pp3_v3_s4sw_sns and PP1V35_S3 are missing. you suggested to check the S3 supplies to see which one is not creating tension, S3 supplies are the same as S3 switches? where the S3 rail gets created? when I measure the resistance on...

Dear Sir thanks for your replay and I apologize if I ask a silly question time by time, Please take into consideration that board repair is not what I do for living it is my hobby and I'm not learning it on other peoples machines I bought couple of defect macbook/ macbook pro ( these are not...

the board doesn't turn on at all. how can I bypass the SMC?

Sorry but could you please tel me how to bypass SMC? Thanks alot

could it be that Q5480 gone bad? because i get nothing on pin 1/2/3 and only on P4 12.58v p5 12.45 and p6 12.33v

thanks for your help I'm not going to put hours to remove them one by one and finally find out that it's a cpu or bad trace.

the board beeps 3 times and the fan spins I re-flowed the ram but didn't help. how can I find out which one of these 16 peaces is the actual problem?

I checked for a short but there is no short on these rails