hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

[ktmmotocross]

Hello.
Have one DV6 taht power off after 2sec. and have no cpu power. i noticed that ECPWROK signal that drives max8774 is low, only 0.5V.

any idea? do u thing that MCP is bad?

[ktmmotocross]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

i do "SI MODIFY 1219", by moving part D34 > D50, Q44 > Q73, R557 > R830 and add D33

now signals is good but have only 5.3V on CPU_CORE from MAX8774


do i have to manualy modify CPU_VID0-5 to have 1.05V ?

[highpulse]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

Hey KTM good morning ,

well cheking what have you wrote , and for my experience on does bloody DV6000 little bastard , not having the PMW temp control will not help in your case , its seems more a MCP problem that anything ,

but what do you read on KBC controler on S3 states ?

[ktmmotocross]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

I can do other "SI MODIFY 1219" to make pwm temp working


but what signals do u mean?

[highpulse]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

well but this is like if you are driving you car and you almost have no gas on it , and sudently you put only 5 bucks of gas , you wont expect making much kilometers with 5 bucks , perhaps if you put 30 bucks well then you'lll drive for longer time , think i made myself clear !
I still think its a MCP problem but for that you must gives us the S3 states reading and also s5 once you press the on off

[ktmmotocross]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

please be clear. what signals du u need.

i make manual modify and now have 0.99V on processor, but still no image

[ktmmotocross]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

its nvidia 8600 graphic so refflow maybe help

[highpulse]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

ok you now got at least a decent vcore , but my question is does the cpu get hot ?
when i mean S3 states , i mean the states send or received by the KBC , if KBC detect something not normal on S3 or S5 , then it will ask for shudown the machine for security .

So usually on dv6000 series laptop , shutoff problem , are caused by many problems , depending on each board model

MCP version
nf6150
and older northbdrige board are common fault .
but once again , wich is first your KB revision on board ?

3926 or 3920 ?

DNBSWON#1
VRON
NBSWON
RSMRST
LID_EC (here you must have the powerboard attached !!
MAINON
SUSON

This you find on KBC pins , tell me values with pressing on ,, and then give me values of what happen to each signal once you press the ON button , chek carefully since some will only send a signal and will not stay always present .

another thing i advise , make a very carefully look out to the board , specially to QFN and small transistors .

let me know for we can carry on forward

[ktmmotocross]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

i have 3926. All signals and voltages r ok. but still no picture.

[highpulse]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

tell me values for all coils = S0

[ktmmotocross]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

all ok

[dycc]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

0.99v low for this kind of processor . caps lock must blink indicating a bad cpu .

without modification , have you really found why ECPWROK was in low state ??????????

[ktmmotocross]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

no. affter modification all ok but that low voltage on cpu.

[ktmmotocross]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

finaly i fire it up. i put sempron processor 1 core in it and it works. can somebody check for me the voltage of some 2 core processor like TL60, QL60, RM70.

[dycc]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

for modification , why don't you just remove D7 diode(page 30) to get ECPWROK in high state ???????

[dycc]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

finaly i fire it up. i put sempron processor 1 core in it and it works. can somebody check for me the voltage of some 2 core processor like TL60, QL60, RM70.

http://en.wikipedia.org/wiki/List_of...icroprocessors

[ktmmotocross]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

i dont wanna make this kind of selfrepair. that modification is recomended by HP so i think it will be better idea than removing D7.

its weird that in your list is voltages 0.9-1.1V so my other processors must work but didnt.

[ktmmotocross]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

i have something weird. the core voltage changes even with one processor. i think i have something bad in CPU_VID signals


i changed max8774 and nothing changed

[highpulse]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

i agree with dycc i forgot you got AMD CPU so core voltage is bit low , but not working with the original cpu and outhers and only a semprom shows a bad bus to me between cpu and mcp , sceecially once you got a PWRGOOD block insyde the MCP .

[ktmmotocross]

Re: hp DV6, turn offf after 2sec. no CPU power, only 0,5V ECPWROK signal

i think i found it. i have some loose contact in CPU socket. the CPU_VID signals have no conponents in it so it must be in socket, because CPU_VID signal especially CPU_VID5 have floating voltage. i give him/socket/ a little reflow and it looks like it work again.
I put TK57 processor and have 1.12V and work.

Now i give processor little load to see its temperatures.