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Don't these dell "Smart" batteries also require a signal from the board to actually turn on the actual battery power. I am not seeing any short on the battery bus. and this is the second battery i have tested on this computer.
I have been fussing with this one, for a bit.
2 replacment batteries,
flashed bios.
known good power adapter.
On boot the bios indicates that the battery has experienced failure.
in windows the battery shows very little info in battinfoview, but windows reports it at 100% charge.
will not...
I learned today what will happen injecting 12v into ppbus_g3h with some serious issues on the board. ppbus_g3h was pulled down to 4v and in trying to find the short i burned up the cpu. Luckily this was an old motherboard that belonged to me and was just trying to kill time and see if i could...
Thank you duke. I was pulling my hair out, thinking i was blind. i will order an lcd.
Should have double checked my schematic. Your guidance helped me get to the end days faster than i would have myself.
okay on the lcd connector i am getting
3.23v on pin 22 BL enable
3.34v on pin 23 system pwm signal input
and 18.9v on pin 27,28 and 29 backlight power.
according to their schematic they are all in spec,
so does this mean that the lcd is bad, or is there a possibility that the pwm not being...
I guess i ended up with the wrong schematic. I was looking for the actual chip.
that was just a drip of flux.
the original issue with this board was no power caused by liquid damage. after corrosion was cleaned up and the board was ultrasonic'd nothing looked toasted and the computer was...
I strongly believe it is, I suppose i could be wrong, but it shows z09 on the board, and all of the research ive done cross referencing the laptop model and motherboard model point me to z09.
the forum won't let me upload images right now on my phone, macbook, or windows computer.
here is a...
I for the life of me cannot find a board view for this board, i have the labeling but being fairly ignorant with quanta boards cannot figure out how to associate this screen print to These two resistors..
and i truly feel like an idiot saying this but i cannot find u22. according to my schematic...
I have a quanta motherboard, computer powers on, and everything seems to be working except for the back-light.
backlight out on the lvds connector is 18.6v with or without lcd attached. no short to ground from connector.
I am assuming that the led driver is not working correctly or something...
Computer has had previous liquid damage.
does work fine on battery.
green has a dim flash about once a second
PPDCIN_S5_CHGR pulses from 0v to 18v
ppbus_g3_h also pulses from 0 to 18v
have replaced isl, q7085 and q7080
no short to ground on ppdcin_s5_chgr
i don't know where to look on this guy...
Louis! That is a great Cheat! I will have to try it next time, I did get lucky and it was just corrosion on ppbus_g3hot and a bad i/o board. Now i need to order another one to keep one for testing purposes.
I was afraid of that, this is one of the io boards, i do not have, but i have one on order. will post back if i have any further issues after that gets in.