Re: Asus N550LF no power
Thanks
Will post result after test
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Re: Asus N550LF no power
Hi,
Thanks for your quick reply
How can i program firmware on that IC ?
Is it better to replace with a new one ?
Thanks
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Asus N550LF no power
Hi,
Very strange case
This motherboard as all the primary voltages and Bios IC was replaced with new one as the original failed to programm.
Power Button as 3.3v and when pressed voltage drops to 0 but motherboard does not start.
There is no led activity at all but battery charges.
Any sugestion ?
Thanks in advance
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Re: Acer aspire 5520 and 7520 keyboard compatible
I think the 7520 as a 17" Lcd and keyboard with separated numeric keyboard and 5520 as a 15.4" Lcd and a normal size keyboard without separated numeric keyboard, so the problem is on the bios. possible it must be internal configured with acer tools, to accept the keyboard with separated numeric from the 7520.
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Fujitsu Siemens Esprimo Mobile V5535
Hi everyone,
I'm having some troubles to identify a failure on this notebook model, with hard drive detection.
Tested 3 notebooks and all with the same sympthoms.
- Installed fresh Operating System.
- After some restarts, laptop reports that no hard drive was found.
- After another restart all works fine.
- Hard drive was replaced with new one and the sympthoms are the same.
- Sometimes it works fine.
- Sometimes there is a BSOD on startup and after that hard drive not found.
Someone as any experience with this...
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Re: Compaq X1000 no Backlight
Hello !
Thanks for your repply.
The lcd lamp is ok, the motherboard circuit responsable for the ccfl tube power is bad.
Tested all components on other MB and are all ok.
There is some failure on MB power circuit.
Thanks
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Compaq X1000 no Backlight
Hi,
I Have a Compaq X1000 motherboard that works fine on external monitor, but on internal LCD there is no Backlight.
Tested with another vga card and lcd and problem remains.
On an simple diagnose, with a working motherboard, measured capacitors C78 and C79 as per picture and there is 3V on left side and 0V on right side.
On the failing motherboard, the C78 as the 3V and C79 as 0V on both sides.
Replaced the C79 capacitor and same problem.
Any idea on how to start searching ?
Thanks...
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Re: acer 5920 g blinking power adapter
Just Perfect.
Replaced the Modem PCB and it works perfectly.
You are the Best !
Many Thanks
...
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Re: acer 5920 g blinking power adapter
Hello, i've 2 motherboard's with those problem and one was the PC112 shorted, the other was a short on PC90.
After capacitor's replacement one of the motherboards is working great, but the other one only boot's after 6 retries.
When pw button pressed, the motherboard come and go for 6 times and then it boots fine and works perfectly.
If i shutdown or restart, then again only boot's after 6 retries.
Do you have any ideia of what may be causing this delay ?
Thanks...
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Re: HP dv1000 not responding
Please Check for Short Circuit on PC151 , PC55 and PQ44
PC151 and PC55 Near ODD Connector
PQ44 Near DC Jack
If They are in Short try to replace them.
Good Luck
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