hi guys i got here asus mobo. can somebody see and help me pls... i got those voltage in coil and one is missing. what might be the problem?
asus k55a no display
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Re: asus k55a no display
CPU also can be bad as you don't have dedicated gpu on this board . don't ignore the (DC-DC) chip who supply this voltage can also be bad . good luckComment
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Re: asus k55a no display
0v on single big coil near cpu socket. the rest are written on the picture..tnxComment
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Re: asus k55a no display
No, but i have found a couple of Mosfets that don't seem to have the correct voltages.
19v on the Drain with no voltages on the Source or Gate of the mosfet on the rear (4955N) and 1.6mv on the Source on the front (4936N) mosfet.Comment
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Re: asus k55a no display
By measuring the resistance between ground ?
Nothing on the back.
The two diodes next to the cpu show a short until i remove the cpu, is this normal ?
Source of the 4939 is to ground also.
I'm not quite sure what i'm doing, your help is much appreciated.Comment
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Re: asus k55a no display
Hi all
I've got similar problem, I've got picture but no backlit. HDMI and CRT work fine. Because I cannot find motherboard schematic it makes it even more difficult. I've checked all lcd pins and I've got 19V, 3.5V, 1.3V, 1V and 0.3V. Can anyone help please?
P.S. I've tried 3 different LCD screens.
Thank youComment
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