Recent content by Dozer

ok, so the best will be to replace the lcd, thank you.

Hi, I got this device with liquid damage. Mainboard is cleaned and was not many liquid to see. The display is not working. with another display the machine is working good. The big connector looks pretty good. I found that there is a burned backlight connector. So i soldered a nice...

I checked now again PP3V3_S0 is ok there is no PP5V-S4_REG U7600 and Q7650 and Q7655 are replaced already PM_EN_REG_P5V_S4_R (EN2) is 3.3V it is lighning only the first led from the mainboard

the client gave me now his original 85w charger is there any way to test it ?

is it possible that there could be from the beginning the main problem a bad dc-in board? can to much current caused by a bad dc-in board damage the u7100 and r7121/2 ?

I tryed with my original charger , no problems. my client told me he have a good original one too, here a pic. can u imagine that it could be possible a bad dc in board?

is it possible that the dc-in was the problem ? yes, i have a original charger, will try that, had only the lab-unit tryed

I have this device here, no green/orange light, dont turn on. found short R7121 Pin 1 to ground and high resistant R7121 and R7122 after replacing u7100 there was no short anymore. So i replaced the R7121 and R7122 after that all was ok but i found there goes 6A in to the machine. So I...

yes, that was for me the intresting part as well. now i checked again and yes there is no 5V_S0, but I replaced already U7600 inbetween so I measured bad S4 or bad S5 and have now a bad U7600. I am gonna replace it again and will post the measurements after that.

hi, i am just workin g on this device, no problems to see on the board first green led is lightning, no reaction by pressing power button pwr_btn_l ckecked platform reset is still low i have 3.41V, 3.3V_s0 and 5V s0 and 12V_S0 I dont have PP5V_S4_REG PP3V?V_S5_REG is ok both enable...

thanks, that is working good for me, the jumper for BKLT_PWJ was needfull too.

I pulled of the GPU Working good. 1) Is it possible to enable still the possible of brightness control? 2) is it without GPU still neefull to protect with password an accidentical PRAM reset?

was no external screen, after flashing new bios i had external screen wich ttol to use for such modification in bios?

ok, so now external is working, password is removed and i get starting up after a while th good old white screen of death, lets look now after gpu replace

so, by replacing R8911 the gpu is already to see in the preferences, found a clear me bios but it shows up a lock, going to remove the password now