HI,
Lenovo G560 LA-5752p rev1 2009-11-30
NO Power No Light any solution
Lenovo G560 LA-5752p rev1 2009-11-30
NO Power No Light any solution
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Re: Lenovo G560 LA-5752p NO Power No Light
remove battery and memory module, try to power with other dc adaptor,
if no result, take out the mobo check if there is 3/5volt
this is the schematic diagram: -
Re: Lenovo G560 LA-5752p NO Power No Light
and you should try bios reprogram after checking for main system power...Comment
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Re: Lenovo G560 LA-5752p NO Power No Light
where to check 3/5 volt on bios or ...where?Comment
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Re: Lenovo G560 LA-5752p NO Power No Light
I checked, no volts on BIOSComment
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Re: Lenovo G560 LA-5752p NO Power No Light
backup your old bios and try to flash with this dump:Comment
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Re: Lenovo G560 LA-5752p NO Power No Light
did not help with flashin biosComment
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Re: Lenovo G560 LA-5752p NO Power No Light
if 3 and 5 volt alwon are present , then bios must be supplied with 3.3VALW
you say, no volt on the bios how ?
try flashing EC bios U3 with this file:Attached Filesif you find these attachements useful please consider making a small donation to the site
Last edited by polytek; 05-27-2015, 07:24 AM.Comment
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Re: Lenovo G560 LA-5752p NO Power No Light
what do you get at pin 7 of PU2? You should get 5v there. if not, replace the chip.Comment
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Re: Lenovo G560 LA-5752p NO Power No Light
Thx for help pu2 is Ok.
Attached Filesif you find these attachements useful please consider making a small donation to the site
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Re: Lenovo G560 LA-5752p NO Power No Light
voltage at pin 1 PU4A?Comment
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Re: Lenovo G560 LA-5752p NO Power No Light
if LID_sw# is low laptop can not power on
check this:Attached Filesif you find these attachements useful please consider making a small donation to the site
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Re: Lenovo G560 LA-5752p NO Power No Light
try to replace isl6251 icComment
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Re: Lenovo G560 LA-5752p NO Power No Light
Hi,
I Have similar board with different problem.
After pressing the power button Power ON LED comes on and shuts down.
After checking the M/B found that SUSP# is not coming from EC. I have already Tried flashing the EC.
Any idea...Comment
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Re: Lenovo G560 LA-5752p NO Power No Light
Also SUSP# = 0.Programing EC didn't help. CMOS battery reset solve the issue.Comment
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Re: Lenovo G560 LA-5752p NO Power No Light
Facing exactly this issue on the very same mobo. Anybody knows the solution??
PS: cmos reset didnt helped. Bios(Main+EC) flashed but didnt helped. Powers up for 3 seconds and shuts down. No 3V VS or 5V VS. Alw present. +3v/5v VS line is not shorted though. SUSP# on pin 116 of kbc is missing.Comment
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Hi all!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
https://www.badcaps.net/forum/troubl...-hardware-devi... -
HP OMEN : DAG35DMBAD0
NO power ,no short ,no corrusion
Consumption : when charger plg in = 0.004 amp
Only 3/5 vl are present when charger connected..when i put my red probe at the coils of 3/5volts and power on with my power suplly it try to rise than 0v.
when try to power on using power button i note this starnge value : 3v then 0.300v then 3v !
No light at power button led
All coils resistances :
Pl 2001 =3v measured with kohm.
pl 2004 = 5v measured with kohm
pl 6001 = 49.7ohm
pl 4012 = vccsa = 24.4 ohm
pl 3001 =... -
Hi guys,
I wonder if anyone has encountered this. I have a Lenovo ideapad 3 that shows no signs of life except when the charger is first inserted the orange charge light comes on for a brief second and then goes off. There is no other sign of life and no fans or lights come on.
if I check the voltage going to the battery it spikes when I insert the charger and then hoes back down.
i tried injecting 2V but nothing gets hot. Any ideas? Im still a noob. -
hello, �� i have been sitting on some microsoft surface pro 4 tablets for a while now. i was originally tasked with replacing the battery in one of the tablets, and ended breaking the screen and logic board in the process. decided to buy another tablet with the same specs. got that screen off successfully of the second tablet. the logic board appeared good, but i guess i shorted something out in the installation process of the logic which i've read is a common issue if there is no barrier between the logic board and battery pins. all that said, i ate costs of the repair and have... -
Hi there,
I've got a 39" LG 39LN540V that's just spontaneously stopped working! The symptoms are - when I plug it in, the red light will flash on twice, then go out, there's no visible picture, and I couldn't see anything using a torch on the panel either. If I press the power button (either remote or on TV), the red light comes on continuously. If I press power again, the red light flashes twice.
The TV is using a power board EAX64905301. I've attached a diagram of the power output, I've tested the voltages with a multimeter and I'm getting the following:
...
Comment