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I would like to know, whenever a PGOOD signal is present on a particular chipset, I suppose that means everything is okay on that chip right ?

Thank you so much for this info , I appreciate

Thank you for your response, I get voltage on L7510 and L7520... on R7402 I get PPBUS voltage on pin 1 and less than 1V on pin 2 , on both TOA & B

Have got an 820-3115 , with no cpu activity . the machine goes on and the DRIVE LED REMAINS ON . I could not pick up anything except that L7550 is 0V , schematic says should be 1.5V. So am not sure if that is my problem or that the signal is not present because the board is not posting ...Also...

reporting back , FL8300-03 to J8300 traces all checks out okay, diode mode to ground on the various data line are same when I compared to a working board

okay , will do and report back , Thank you 2informaticos

Are you Using an 85 watts charger as pointed out ? Please note that you would still get PP3V42 even when you using a knock off or under rated

Have not a had a problem like this one before , and have been sitting with it for a week now , its rather strange by my own definition. The board would power up okay , backlight shine through the Apple log but no image , however when a apply pressure on the FL8300,FL8301,FL8302,FL8303 , then I...

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thank you for your time. My place of work is quite strict , They raised the bar so high. and thanks moo Louis , have been able to keep up with the struggle.. and my success rate has been 8/10 to 9/10 .. However, those times I get defeated, it hurts so bad , especially when I have to answer for it .

thank you for your time

820-00165 is giving me so much hard time ......guys , what typically do you do on a board with missing PM_SLP_S4_L ? At what point do you give up ? I mean on a board that is not liquid damaged and has no short to ground... please help , I need to be sure I have gone over it all before sending it...

Have you confirmed you have image ? I Have the same case , but got mine resolved