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got in a 820-3208 no power no green light, will not run on battery, voltage with charger plugged in only, r7020 -20v r6905 pin 1 -20v pin 2- 2.96v d6905 pin 1- 0v pin 2- 2.95v pin3 - 2.67v u5010 pp3v42_g3h - 1.76v f7040 - ov on ppbus_g3h i have tried replacing the isl, any idea what...

customer sent in 820-2850 little background on it, they had replaced the c9560 with a 330 44hps d tried to find this chip to make sure its okay but no luck. the issue is when it turns on it turns on to E.T sounds and the speaker jumps, it sounds really like electrical pulse's or morse code i...

okay fair enough for me. i'm going to toss it to the scrap pile.

i'm getting a black screen with backlight. just tried replacing the connector and tried swapping out the screen, no change. i tested the screen on a working board and the screen is working. there are some red points around the connector and u9701.

pins 1-0 2-.017 3-.017 4-.352 5-.514 6-.537 7-.579 8-.365 9-.364 10-0 11-.364 12-.364 13-0 14-.364 15-.364 16-0 17-.363 18-.363 19-0 20-OL 21-.602 22-.602 23-OL 24-.634 25-.635 26-.635 27-.632 28-.632 29-.632 30-OL

sorry i didn't mean Celsius i meant Fahrenheit. the only question that i have is if i have a short on 5v_s0 and i remove every component on that rail shouldn't i have been able to find the short? unless its a break in the line right? thanks for the help Duke.

r3452 is a resistor so it should be good unless its fried up, not exactly sure of the correct answer.. i suppose the j3401 connector could be damaged, or c3421, c3422, c3420 could be bad, not sure why r3452 would be heating up unless somehow 5v was connected to that rail and that would be bad or...

came across this board in a pile. i went over and checked the readings here and PPBUS_SW_LCDBKLT_PWR_SW = 12.4v this is good right? pp3v3_sw_lcd im getting 3.4v. and on PPVOUT_SW_LCDBKLT im getting 27v and this is good also. i am noticing you said that the backlight is not boosting but...

i am injecting voltage into the c7510, i also have no idea why i'm getting hot on 3v components.. i double checked again an def getting up to 100 degrees on the u3402 and it goes down it temp when im checking over the q4590 witch is on the 5v rail. i double check res to ground on the 3v rails...

u3402 is getting the hottest, r3452 is second hottest both up to 97 degrees u3402 gets up to 98.9 degrees. the q4590 was getting hot also but not as hot. The rest of the board is in low 80's.. I tried replacing them both and just pulling them off and checking res. nothing changed. also when...

0v to gnd in diode mode or .06k in res mode. should be .49 or something similar to that.

i looked into everything pp5v_s0 is connected to and nothing is shorting to ground on that rail. is something not telling pp5v_s0 to turn on?

We need to know if the drive is spinning up? double checked os is working on hdd? holding down options during start up does anything show up? any info behind the board its self? check under the microscope for any thing affecting the connector on the board?

did you check SMBUS_SMC_BSA line? also don't take measurements in auto mode. use Either K or diode mode. Its going to be the battery indicator, isl, or smc. or both.

pp3v42_g3h = 3.4v pp3v3_s5 = 3.32v cycling to 0 and back up pp3v3_s3 = 0.25v pp3v3_s0 = 0.03v to 0.35v back and forth pp5v_s5 = 4.28-2.98 jumping all around in between pp5v_s3 = 0v pp5v_s0 = 0v pp5v_s3_isns_r = 0v voltage drop to ground diode mode. pp3v42_g3h = 0.093v pp3v3_s5 = 0.40 pp3v3_s3...

okay it was the u9000. i should have swapped that out last night when i was going too haha. the only other problem now is that when i plug it into the computer the fans do not want to spin. then i hold the power button down turn it off then power it back on and the fans kick on and everything...

i know coils never go out, i wanted to see if it would stop cycling without the coil on so while i was there i swapped it out. going to swap the u9500 and work my way down to the q9561 and see if anything changes along the way, also i had edited the last comment before i saw your response...

sorry forgot to post that. pin 27 3.3v voltage drop to ground in diode mode l9560 0.109 l9510 0.145 should be .49 or something similar there so this confirms the short to ground there. swapped out the l9560 no change. also i tried running it to see if it would work without the l9560 connected...

the schematics are not always correct but relatively close. there are going to spots all over the board that are not connected to anything but have power/data running to them, why? ask an engineer. just check some of the same boards to make sure there is not suppose to be a part there. also in...

tracing back the l9560 Q9561 pin 5 and pin 4 0volts q9560 pin 1,2,3 = 0 volts pin 4 0 volts, pin 5 8.4volts u9500 pin 23=0v , 24= 4.7volts, 25=0, 26=0,