update. after last bios flash with peste bios, laptop was dead (no more power on), so i put original bios back and without erasing eprom i put your bios on it, with same dead laptop as result. thinking i may have damaged the notebook and in addition my bios adapter was a chinese crap quality that smell like burn plastic i put the laptop aside for a while. today i got new adapter and flashed your bios with normal programming(erase blanc checking write, verify) and after reassembly it it started and all is working perfectly.
big tnx to both of u for helping.
my question is .......
dellxps15
Badcaps Legend
Last Activity: 04-23-2025, 09:05 AM
Joined: 02-25-2014
Location: Italy
-
try to do a discharge and fully charge. after it's fully charget let it still plugged for some 2 hours more. see if it fix the problem. also cdo a smc reset or pram.Leave a comment:
-
ok, sorry for the noob question, this is the first time doing that. so i need to program again bios chip with my original backup, then instead of doing erase, blanc checking, write and veryfy i just need to write without erase, blanc and verify ?
tnx very much for the help.Leave a comment:
-
ty for the quick reply. dunno if bios is soldered bad, but laptop didnt power on. dunno if bios problem or solder problem or something else has happened. maybe ill try resolder the bios again and see if it start.
for now thank you very much.
edit: i check bios solder and all looks ok. maybe i could try with original bios back ?
edit2: i ll wait maybe some other file to try, as my adapter is cheap and smells terrible when soldering the bios on it, also if it work i dont have to take board in and aout too often as that notebooks looks like it can brake any moment
...
Last edited by dellxps15; 02-05-2025, 09:21 AM.Leave a comment:
-
hi all, can someone help me remove lock ?
service tag is : 76MS533
locked bios attached....Leave a comment:
-
i had a gtx 675m in my alienware mx17x r4, but gpu temp never exceeded 75°. dunno what vram temp it got, but for gpu core, 104° means pads are not the right size ? what app are u using ? gpu-z ?
on what system it's installed?Leave a comment:
-
it's hard to use it..... still some point give me nc or the bus stop somewhere.
ok give it a look.
+adp_19v
edit2: ok loks like it goes in every mosfet like other laptop. some go also to cpu mosfet so be carefull (i see u removed the cpu good job) so make good progress when injecting power.check if anything get hot....Last edited by dellxps15; 01-29-2025, 04:37 PM.Leave a comment:
-
tnx very much for the brd. what app can i use to open it ? openbv i use for mac doesnt work
Leave a comment:
-
yes it will work most of the time..... just spill some ipa close that dc connector where mosfet or caps are . if we had a boardview we could see that line where could possible go.Leave a comment:
-
do you have lab psu ? you could inject 1 volt 3 amp and see what get hot spilling maybe some ipa or better with thermal camera.Leave a comment:
-
check resistance on that marked resistor to gnd. all coils are ok according to your reading....
Leave a comment:
-
have u installed windows in full uefi ?Leave a comment:
-
board should not power on on 12,4 volt unless u do smcbypass. ppbus must be 12,57 volt (12,6) not 12,4 as smc is not boosting. if u connect fan, and connect psu, fan start spinning or they dont ?Leave a comment:
-
your macbook has some problem with ppbus and smd. 12,4 volt going down could be bad 10omh resistor r7021, r7022. check if they are 10omh.Leave a comment:
-
voltage on c7200,
resistance on c7205 ?Leave a comment:
-
read voltage on C7205 pin N° 1
check voltage of r7940 both side,
post u7201 voltage....Last edited by dellxps15; 10-18-2024, 02:07 AM.Leave a comment:
-
be very carefull that the psu is in perfect working condition as some charger give green light but fail to power on the board. also bad battery can lead to this problem too.
try smc bypass if it start:
short the 2 pins on board, then connect psu while keeping the two pads shorted, then release the pin and short them again. check if pc start with full fan spin and give post and screen.Leave a comment:
-
you need also one wire to enable backlight once mac goues in sleep mode (like when u close the lcd and reopen it). check that line in the attached picture and adapt on your logic board....
Leave a comment:
-
update: i got a new trackpad from amazon, but the seller send me a used one.... i tried it and trackpad was working but no feedback on click, so i take the original old one with blown fuse (not 100% blown.... in diode mode was reading 1600 (yes a bit too hight for a fuse) and after soldering a wire of 0,002mm all is back in working condition and also the click feedback is back to normal status.
tnx mon2 for the help.
for the fuse, for a 250mah i need to order from china with ofcourse candbe sure of their uality and also would take like 20 days to come and customer...Leave a comment:
-
tnx for the reply mon, googling fuse marking code ive seen that X marker is used for 250mah, but on mouser i cant find any of these fuses with a X marker on them. the line is a 3,3 volt, so any other fuse i have is too big (backlight; ppbus and so on). there is no short there , so ill put a 0 omh resistor and see what happen.
any suggestion for the no feedback ? (magic trackpad haptic should be the function not working here).
edit: maybe i can use a 0,002mm wireLeave a comment:
No activity results to display
Leave a comment: