Clevo W740SU Problem switching on (aka Schenker S413, System76 Galago UltraPro)

[rash.m2k]

Hi All,

My laptop has developed a fault, when I press the power button its switches on I can hear the disk spin.

If I have the power supply plugged (or keep the power button held down) it will keep doing this on a loop until it switches on.

Nothing appears on the screen at all.

I do have a 2TB spinning disk a 256GB sata and 16GB of ram in this - this will increase power consumption, maybe this tipped it over the edge?

What do you think could be the issue?

I'm based on the north west, UK so if you are close I'd be happy to pay for your time to take a look at this?

[highpulse]

Re: Clevo W740SU Problem switching on (aka Schenker S413, System76 Galago UltraPro)

I there , i dont think this could be a issue due to power problem .. this clevo must have an adapter at least 7 to 9 amp .

alltough , computer beeing in loop during beggining , does seem to me , bad config in bios , making it to loop start , try removing battery and therefore cmos battery for some good minutes , (also do not attach power source during htis time :P
i've been having clevos for a while , and somethimes they can be a bit annoying .
but mainly bios and starter ICS damage often

[rash.m2k]

Re: Clevo W740SU Problem switching on (aka Schenker S413, System76 Galago UltraPro)

Hi mate,

tried this, even had the battery and the bios battery out for a few days and it's still doing the same thing.

Not really sure what the problem is.

FYI I've attached the repair manual for this laptop, hopefully should help in diagnosing this issue?

[dellxps15]

Re: Clevo W740SU Problem switching on (aka Schenker S413, System76 Galago UltraPro)

if pl4 pl5 are 3.3 and 5 volt , check if they comes up after pressing power botton and if they go down within a second or stay up for a while.

[rash.m2k]

Re: Clevo W740SU Problem switching on (aka Schenker S413, System76 Galago UltraPro)

if pl4 pl5 are 3.3 and 5 volt , check if they comes up after pressing power botton and if they go down within a second or stay up for a while.

OK pal I know it's been a while, I've got the multimeter out and checked it.

They seem to down down within a second or so, I have to put my meter on max voltage so I can see what the voltage actually is because the laptop keeps looping round and round. PL4 goes up to 5.18v and pl5 goes up to 3.271 volts,
(there are two pins and on one side the voltage is slightly lower.....).

This is with everything removed, only the montherboard, power cable, and on/off switch (there some secondary circuit boards which I also left on as they were clipped in).