Re: HP zbook 17 G3 T7V35ES - endless restarting pre-POST loop
Hello, I have my notebook currently assembled, cant look closely for the details. I checked the photos I made before, but sadly, no use for them. Im sorry.
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Re: HP zbook 17 G3 T7V35ES - endless restarting pre-POST loop
Hm, propably identified bad one ? PL37, every other were possible to measure, but not the PL37, for a very very brief moment i saw some value, but not again when tried to measure again.
[url]https://imgur.com/a/PZ79JoQ[/url]
PS: PL37 was unmeasurable on any range of Ohm set on multimeter
PS2: Inscription on PL37 :
4R7
612
P62Re: HP zbook 17 G3 T7V35ES - endless... were possibleLast edited by murko1; 08-27-2021, 02:43 PM.
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Re: HP zbook 17 G3 T7V35ES - endless restarting pre-POST loop
So,
I stripped everything to the bare minimum (only mainboard pcb with gpu/cpu, without ram, without cmos circle battery).
I tested unplugged external power supply, it is allright - 19.35V.
When the power supply cord is plugged, the same voltage is on the most of the expected "points" of SMDs near the input connector (I didnt tested all of them, as there are hundreds of them to test, sadly dont have the steady hand or the time). I looked for points where I could measure some anomalies,...
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Re: HP zbook 17 G3 T7V35ES - endless restarting pre-POST loop
I will do the measuring in a moment, meanwhile I took better photos of the MB:
[url]https://imgur.com/a/8fM857g[/url]Re: HP zbook 17 G3 T7V35ES - endless.../8fM857g[/url]
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Re: HP zbook 17 G3 T7V35ES - endless restarting pre-POST loop
I made overall photos of the mainboard, in the case you could point me where to look at and items to measure.
Some arent much clear or zoomed well enough, as I dont have better photo equip atm. I could try to do better shots if you point me at locations you need to see more clearly.
[url]https://imgur.com/a/WDuWwCn[/url]
Thanks,
-MRe: HP zbook 17 G3 T7V35ES - endless...point me where
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Re: HP zbook 17 G3 T7V35ES - endless restarting pre-POST loop
Hi,
I am fine with multimeter measuring, albeit for soldering I havent done it for about 15years since I graduated.
Anyway:
- notebook is in mint condition, never spilled any fluid on it, also properly cleaned from dust every now and then
- serial no: CND6390DSM
- product no: T7V35ES#BCM
EDIT: Semi thorough inspection of the mainboard - I havent noticed any damaged SMDs, but I didnt used any magnifying glass, just by eye inspection.
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HP zbook 17 G3 T7V35ES - endless restarting pre-POST loop
Hello community,
I am hoping that you could help me diagnose and find solution for my problem with HP ZBook 17 G3 T7V35ES.
I will try to describe my problem by posting exactly what I asked on official HP support forum, on reddit, etc.. (basically everywhere I posted, but got zero solution/help).
[I][B]Original post from 14.12.2020 at HP Support Forum : ([URL="https://h30434.www3.hp.com/t5/Business-Notebooks/HP-zbook-17-g3-endless-restarting-pre-POST-loop/td-p/7894249"][B][U]link here[/U][/B][/URL])[/B][/I]
...
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Re: New Members - please post your introductions here
Hello comunity,
I am here in the hope, that I will find solution to my failing HP Zbook. As per rules, I have to have at least one post, before starting thread, where I describe my problem. Hope I understand those rules correctly
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