Dell inspiron 3542 laptop not powering up

[Omron]

Re: Dell inspiron 3542 laptop not powering up

Can't we solder wire from other 3.3v line to this one that is without power?

[mcplslg123]

Re: Dell inspiron 3542 laptop not powering up

No,you cant do that

[Omron]

Re: Dell inspiron 3542 laptop not powering up

Or if I try to heat up CPU with hair dryer? -- Tried it, didn't work
I guess this is end of road for me, what I can do. I learned a lot in this progress, and I want to give a big THANK YOU for putting your time and effort into trying to help me. Guess I was very unlucky that cpu is dead. I hope this threat will help someone in the future with diagnosing their own motherboard.

As Sorin from Sorin Electronics would say, know your limits, and I know mine and this is where I stop with this motherboard, good luck in your future projects and repairs! THANK YOU again.

[Omron]

Re: Dell inspiron 3542 laptop not powering up

Does these inductor measurements make any sense? I went to discord and another very good human being was helping me to measure them

[Omron]

Re: Dell inspiron 3542 laptop not powering up

Measured it up on discord, we analyzed board some more and we gonna try to brush it with alcohol tomorrow on Lcd pins, see if that does anything good, people know you there and respect your opinion and work you have done, we are at Electronic repair school, Sorin Electronics, maybe you heard about it before anyways, I just wanted to keep you updated and if something change I'll let you know of course

[mcplslg123]

Re: Dell inspiron 3542 laptop not powering up

The measurement on PCH Power/VCore is wrong. Measure on the other side of the coil. PCH power coil should read 1.05V and VCore may be 1.7V. Heating up the SOC with a hair dryer is clear no no and i consider it as suicidal step. If this board was on my table, i could have revived it as i've all the necesaary tools and skills. I'm sorry i cant help you further.

[Omron]

Re: Dell inspiron 3542 laptop not powering up

Yes it was 1.05 and 1.7 I updated wrong picture, thank you for everything, see you in some other page in the future

[Omron]

Re: Dell inspiron 3542 laptop not powering up

Small update about this laptop...
Its turning on with picture if ambient temperature is colder, I put him to sleep mode and its turning on with image 100/100 times.
Stress test passed, with great scores/ temperature is low, system is fully stable,
So basically I don't use shut-down option anymore, instead I use "sleep" and its working, somehow bypassing fault.

[mcplslg123]

Re: Dell inspiron 3542 laptop not powering up

Yeh, it is likely to work as long you dont mistakenly shut it down.