HP Probook 450 G1 charging white LED Continuously flashing

[subroto]

HP Probook 450 G1 charging white LED Continuously flashing after plgging the charger. I've programmed with fresh bios but still same problem. No 15v in run power section. Some days ago I got a probook 4540s with same problem. I couldn't fix that. Anyone here to help me?

The schematic is attached with a picture of 15v of page no 36.
The board model is
Rampage_MB
12241-1
48.4YW05.011

[tibd]

Re: HP Probook 450 G1 charging white LED Continuously flashing

try Another keyboard and report.

[subroto]

Re: HP Probook 450 G1 charging white LED Continuously flashing

without keyboard it's also showing same thing.

[fichamba]

Re: HP Probook 450 G1 charging white LED Continuously flashing

HP Probook 450 G1 charging white LED Continuously flashing after plgging the charger. I've programmed with fresh bios but still same problem. No 15v in run power section. Some days ago I got a probook 4540s with same problem. I couldn't fix that. Anyone here to help me?

The schematic is attached with a picture of 15v of page no 36.
The board model is
Rampage_MB
12241-1
48.4YW05.011

Same problem here. If I can fix it, I will comment it here.
Good luck, in the meantime!

[mehdiahmadi]

Re: HP Probook 450 G1 charging white LED Continuously flashing

i have the same problem
did you fixit or not?

[gitsfarmaz]

Re: HP Probook 450 G1 charging white LED Continuously flashing

same problem here

[Mazorca]

Re: HP Probook 450 G1 charging white LED Continuously flashing

Can someone explain where or how this 15V is generated? Looks to be related to SPWON.

[SMDFlea]

Re: HP Probook 450 G1 charging white LED Continuously flashing

Can someone explain where or how this 15V is generated? Looks to be related to SPWON.

That looks like a typing error, it should be 5V_S0 .Look at page 2 of the schematic. SWITCHES , inputs 5V_S5 Outputs 5V_S0

[Mazorca]

Re: HP Probook 450 G1 charging white LED Continuously flashing

That is good to know, that some schematics have typing errors. A while ago, I had one HP schematic with also 15v. Yes, it did measure 5 volts and with no voltage divider I couldn't figure where it came from.
Thank you for the learning experience.

[rumensat]

Re: HP Probook 450 G1 charging white LED Continuously flashing

put 10 kom resistor betwin 18 and 8 pin of RT8223
bcose U2605 -temp chip has to have such resistor but dont have and RT can not go main 3.3 and 5 v

[forespec]

Re: HP Probook 450 G1 charging white LED Continuously flashing

I tried 10k resistor but did not work. In my case it works some times itself

[acshud]

Re: HP Probook 450 G1 charging white LED Continuously flashing

same problem me too.i have 2 motherboard with same problem.some news?

[bachir2004]

Re: HP Probook 450 G1 charging white LED Continuously flashing

First try with original charger.Second,have you removed rtc battery?and please
you would better start a new thread.

[faraday3000]

Re: HP Probook 450 G1 charging white LED Continuously flashing

I have the same problem. some news?

[pepegotera454]

Re: HP Probook 450 G1 charging white LED Continuously flashing

Diagram page 99, starting sequence indicate what voltages it has.

[jembloenx]

Re: HP Probook 450 G1 charging white LED Continuously flashing

HP Probook 450 G1 charging white LED Continuously flashing after plgging the charger. I've programmed with fresh bios but still same problem. I couldn't fix that. Anyone here to help me?
The board model is
Rampage_MB
12241-1
48.4YW03.011

[mcplslg123]

Re: HP Probook 450 G1 charging white LED Continuously flashing

Its most probably RTC failure. Probe the RTC Circuit. Usually its a resistor or cap gone bad in RTC circuit.