da0r75mb6cd0 REV: C problem.

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

also following the EC rom pinout there is a line right after R302 , that goes down and will connect to FDIO2 to KB , and there is 0 volts on the KB as well .. but FDIO 3 that connect to pin 7 allready have 3.3 .. i dont know if this its relevant or not . but let me chek injecting 3.3 volts on the pin (makes no sense , since the resistor is ok , it should pass , but let me try

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

it will give a bit of voltage on the pin 3.04 , but make the KB to start to be warm(not hot)

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

bios voltages ..

1- 3.35
2 - 1.50
3 - 0 (but if i lift the pin 3 , and if i measure the in 3 directly i got qround 1.79)
4 - 0
5 - 0
6 - 0
7- 3.3
8-3.3

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

after a update on bios
gt diferent value

pin 1 is 0v
pin2 is now 3.03
pin 5 -2.90
pin 6 - 0

all the outher are the same

[whaldsz]

Re: da0r75mb6cd0 REV: C problem.

This chip could be broken. For normal operation, pin 3 should be high. Can u measure the resistance of pin 3 with tespect to ground?

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

i will tomorrow , it was my day off today when you mean broken chip (you mean the rom ?
tomorrow i'll let you know

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

with the rom soldered to the board , pin 3 to ground 24.6 ohm .. sounds a bit low

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

well sodlered a new chip on it , pin 3 now i got 75Kohm . but still 0 volts ... but pin 2 i got 3.34 volts .... each time more crazy really dont get wtf is going on

[whaldsz]

Re: da0r75mb6cd0 REV: C problem.

using dso, is there any activity on pin 1,2,5 and 6? you may need to flash a known working rom.

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

will use one that a friend sent me here , just in case , i tryed so many allready . will relfash with the F33 that someone sent me here
in this moment , (only thing i can measure is voltage since i got a lack of osciloscope in the lab -.. piggy boss :\ ) but for voltages on the pins you request , all are 0 except for pin 2 that is 3.35

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

even with bios lifted , all the voltages i mention , are there

3:35 volts on pins 8 , 7 and 2 ..all the outher got 0 volts :!

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

ALEEEE LUIAAAAAAA

thk to Atsio dumps finally i can deliver this thing to my client !!!! dammmmmm it was hard but working nowww !!!!!

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

ni the END all this shits was ITE and charger problems .. and after to much reflashing bios , i ended up damaging the previous bios .. with the new chip i had a different value and with the F33 dump by Atsio once i connected the dc source , if flashed the led then it light up the led , and its turning on

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

well the bido 1982 turn on but no image .

bido 2139 turn on led of dc jack , but doesn't allow me to turn on machine .

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

also tried the f22 version from dyce but , the same turn on no image. ohh bloody machine !!!!
tomorrow will spend more time with this bastard

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

btw this is a UMA version it only have the FCH amd chipset.
Techman (your the bios pro here ) could this bios dump making this issue to happen ? have you time to create one ? for me

HP 15-E050SP
product D9X89EA#AB9

board model is the one mentioned on the topic

but anyway its the - DA0R75MB5C0 REV:C

there is only AMD cpu , and FCH chipset

KBC ITE IT8528E

ROM is a 32 mb

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

ok troubleshotting the problem , cheked on lvds connector , and i dont have pin 1 and 2 voltages , well noticig after that there is a component that dont exist , since there is no discrete VGA on this board .so there will be no value here since they come only from that supposed component that is not on this version.

got 19 volts on the 39 and 40 pin , and 3 volts on the pin 3 of LVDS.

this on page 22.-

on page 33 i got here a lvds converter RTD2136R and its giving me only 0.34 volts for pin 44 LVDS_BLON (this should be at least hinger than 2 volts since its for bklight .

i got the 1.2 and 3.3 sources entering into the lvds converter , but pin 19 20 and 21 i got 0 volts . and surely does would have a positive value especialy for DISP_ON (pin20)
im getting tired of this board , im just still working on this , since is a good client and he spend good money on this fix for we can make it to turn on . now all good but no image is killing me .

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

pff any clues guys !!

[highpulse]

Re: da0r75mb6cd0 REV: C problem.

i cheked that RTD2136R got all VCC coming in , 1.2 and 3.3 lines , altough there isn't any voltages on

DISP_ON COMING OUT
DPST_PWM COMING OUT
PWM_VADJ COMING IN
LVDS_BLON COMING OUT

[dj_ricoh]

Re: da0r75mb6cd0 REV: C problem.

KBC_RST#, SUSON pin19, RSMRST#, NBSWON1#, VGA_ON_SB

post some values on those pins