Re: Dead hp dv6 (quanta ut3)
is it a general rule for all SPI bios or model specific? and also could you give the bios voltages after pressing the power button? that will help rule out EC or bios.
thanks...
v1406
Member
Last Activity: 11-03-2012, 03:38 AM
Joined: 09-28-2012
Location: new delhi
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Re: Dead hp dv6 (quanta ut3)
i have learnt that the 12valw is not that important at the begining.
what is important is to have rsmrst signal high after pressing power button
and the 3920_rst should be high ..... its ok
check your bios pin 1. what voltage you get there? it should be high
hope that helps...Leave a comment:
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Re: Dead hp dv6 (quanta ut3)
the problem is the rsmrst voltage ..... indicating that the EC is not working properly...Leave a comment:
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Re: Dead hp dv6 (quanta ut3)
hope to get a response from you.Leave a comment:
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Re: Dead hp dv6 (quanta ut3)
thanks once again for your second comment.
I have a general power on sequence of the laptops and i guess its broadly the same for all ..... more or less ..
hence i opined that rsmrst should be high indicating the EC/SIO chip to go ahead.... if its just a trigger pulse.... and that can easily be the case... then why is the sus b/c pins still low?
what is coming in between?
I am trying to first come to some logical conclusions before going ahead with reflow etc.
...Leave a comment:
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Re: Dead hp dv6 (quanta ut3)
thanks for your comments. sorry i could not reply earlier.
in these dv6 laptops there is an LED just around the dc jack. that lights up as soon as you plug in the adapter. that LED is glowing .
but the LED that comes on after pressing the power button tries to glow......... very faint pulse of light comes when i press the power button but in less than half a second that goes off.
....... just like the rsmrst signal
thanks again...Leave a comment:
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Re: Dead hp dv6 (quanta ut3)
thanks for your interest
there is no liquid spillage.
it was a bit dusty but i have cleaned that all.
the voltages will drop down with rise in current demand.
thanks again...Leave a comment:
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Re: Dead hp dv6 (quanta ut3)
Thanks for your comments.
Frankly speaking, I had left the hope of receiving any worthy comments after a few days of lull.... but i am glad i was totally wrong. it took some time but by now there are plenty of them.
thanks again.
coming to the point, i have already mentioned the low state of susb and sus c in my original post.
Voltages At EC (KB3926)
9, 22, 33, 67, 96, 111, 125 (3VPCU) = 3.4V
037 3920_RST# = 3.3V
127 LID_EC# = 3.25V...Leave a comment:
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Re: Dead hp dv6 (quanta ut3)
sure many of you know where the problem is........ you just need to share your knowledge with others.
waiting for your reply
Leave a comment:
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Re: Dead hp dv6 (quanta ut3)
had a good look at that reply no 5. but that is something different....
if you want pictures , i can upload those but vissibly there is not any burnt component or dry solder....
hopefully someone can tell me how to troubleshoot it by measuring voltages in a logical sequence
thanks for your input.Leave a comment:
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Re: Dead hp dv6 (quanta ut3)
is it a forum NOT FOR TECHNICIANS ??Leave a comment:
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Re: Dead hp dv6 (quanta ut3)
still no response from such an active forum ........ unbelievable !!Leave a comment:
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Re: Dead hp dv6 (quanta ut3)
come on badcaps forum users......... it has been two days and not a single comment?
please give some feedback
thanks...Leave a comment:
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Re: Dead hp dv6 (quanta ut3)
[attach]48193[/attach]...Leave a comment:
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Re: Dead hp dv6 (quanta ut3)
Looking forward to a few comments from all of you.....
thanksLeave a comment:
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Dead hp dv6 (quanta ut3)
Dear All,
Hello !
I am looking for a solution to a [U]dead HP DV6-1235ee [/U]laptop with the following motherboard:
[B]Foxconn [/B]
ML1-H94V-0E253117
[B]168UT30001-094D[/B]
quanta ut3 schematics
PU1:: ISL6262
PU2:: RT8206B
PU3:: 8119LN
PU4:: P2805
PU5:: ISL6251
som of the voltages i measured:
DC jack = 19.93V
+VA = 19.90V
+VAD = 19.71V
+VIN = 19.71 V
+5VPCU = 5.25V
+3VPCU = 3.45V
+5VALW = 5.25V
[B][COLOR="Red"]+12VALW = 8.70V[/COLOR][/B][SIZE="5"]...
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