|
|
|
|||||||
|
|
Thread Tools | Display Modes |
04-02-2012, 10:39 AM
|
#1 |
|
Member
Join Date: Nov 2010
Posts: 76
|
Hp dv5 504640-001
The unit was killed by customer inverting polarity with an external oem supply; now no power led and no signs of life.
I found 19v,3v and 5v in several zones, and 3v on pwr btn, but would know a good point to start for. Thanks |
|
|
|
04-02-2012, 03:37 PM
|
#2 |
|
Senior Member
Join Date: Mar 2012
City & State: Buenos Aires
My Country: Argentina
Line Voltage: 220VAC 50Hz
I'm a: Knowledge Seeker
Posts: 108
|
Re: Hp dv5 504640-001
Could you please upload pictures of the motherboard? From both sides.
Please, attach them don't post them inline. |
|
|
|
|
04-03-2012, 06:19 AM
|
#3 |
|
Banned
Join Date: Sep 2010
Posts: 641
|
Re: Hp dv5 504640-001
Start looking in the 5VSB/3.3VSB circuits.
Is it a Quanta QT8 or other motherboard model? You can try finding the schematic if you know this. |
|
|
|
|
04-05-2012, 08:02 AM
|
#4 |
|
Member
Join Date: Nov 2010
Posts: 76
|
Re: Hp dv5 504640-001
Hello, is QUANTA QT6, schematic found ,where to start for?
|
|
|
|
|
04-05-2012, 07:35 PM
|
#5 |
|
Banned
Join Date: Sep 2010
Posts: 641
|
Re: Hp dv5 504640-001
Look for the standby voltages first.
|
|
|
|
|
04-06-2012, 11:12 AM
|
#6 |
|
Member
Join Date: Nov 2010
Posts: 76
|
Re: Hp dv5 504640-001
While looking voltages (all seems good), found ENE KB3926 getting very hot, will try to replace and keep forum updated.btw happy easter to all.--m
|
|
|
|
|
04-06-2012, 07:40 PM
|
#7 |
|
Banned
Join Date: Sep 2010
Posts: 641
|
Re: Hp dv5 504640-001
That's the embedded controller. If you replace it you will need to reflash the firmware.
|
|
|
|
|
04-07-2012, 02:32 AM
|
#8 |
|
Member
Join Date: Nov 2010
Posts: 76
|
Re: Hp dv5 504640-001
Reflashing is needed also if i use the same part?
|
|
|
|
 |
| Thread Tools | |
| Display Modes | |
|
|
Linear Mode
