User Profile

EffiSon replied to Qnap TS 653D - no power / no light / dead

in Troubleshooting & Designing Networks

05-26-2025, 02:24 PM
Hi,
Sorry to re open the topic again. But after long time got a chance to work again on that issue.
Now the IC has been replaced but still no power. Found that component pins are almost short which has resistance between 45 ohms Can someone identify that IC ?...

See more | Go to post
Leave a comment:
EffiSon replied to Qnap TS 653D - no power / no light / dead

in Troubleshooting & Designing Networks

02-09-2025, 01:42 PM
[B]IC U40 removed, that was shorted
Resistance at capacitor vs gnd at 1 of inductor pad is 3,5k ohm now[/B]

[B]No more short after ic U40 removed[/B]

[B]that's my typical method too, thanks [/B]

[B]Thanks, will order sooner[/B]

[B]Yes, its regulator IC, luckily no capacitors this time[/B]

[B]Sorry it was my bad if i was not clear enough. I never tried to inject 12 volt on that specific section/block. Injected on the main connector to verify current...

See more | Go to post
Selected Answer
Leave a comment:
EffiSon replied to Qnap TS 653D - no power / no light / dead

in Troubleshooting & Designing Networks

02-08-2025, 04:59 PM
Power Inductor L20 and the output of the IC (Output vs GND) seems to be shorted but can't find anywhere else short ? is it due to IC or itself inductor which could be short ?
Nearby coupling capacitors are all OK/NOT SHORT...

See more | Go to post
Leave a comment:
EffiSon replied to HP 15-dy0013dx doesn't Power On, Power LED Bilinking, needs help for trouble shooting

in Troubleshooting Laptops, Tablets, and Mobile Devices

02-08-2025, 04:08 PM
Have you tried with a different ram ? if you still have a copy of your original bios dump try to verify it before soldering it back on the mother board
else request or search for a bios on the forum and try that

See more | Go to post
Leave a comment:
EffiSon started a topic Qnap TS 653D - no power / no light / dead

in Troubleshooting & Designing Networks

02-08-2025, 03:34 PM
Qnap TS 653D - no power / no light / dead

Hi,

Got a QNAP TS 653D today, which is totally dead.
After some investigation found that one of the dc-dc IC (buck converter [B]568215/[/B] [B]TPS568215[/B]) is getting too hot (with NAS own PS).
Switch to bench power supply and applied the 12V supply to identify the short circuit where found that the unit continuously draws draws 110mA !!!
Does anyone has its schematic or boardview ?

Question is how can i verify if that is the only IC which is defective ? is there any way to bypass that and verify the HW before got replacement IC ? where else can i...

See more | Go to post
EffiSon replied to HP Zbook Studio G5 - Clear ME Please

in BIOS Requests ONLY!

08-28-2024, 02:21 PM
Did try both of them, bios zip won't even power on the device no fan spin where as zbook bakcup1 zip did not show any display though fan runs at full speed
Got confused ;(

Any more ideas or help...

See more | Go to post
Leave a comment:
EffiSon replied to HP Zbook Studio G5 - Clear ME Please

in BIOS Requests ONLY!

08-21-2024, 02:15 PM
Can someone please clear this bios and / change its setting to default if possible
Description : HP ZBook Studio G5
ProdID 2ZC51EA¤AK8
S/N ¤ 5CD92348V3...

See more | Go to post
Leave a comment:
EffiSon replied to HP Zbook Studio G5 - Clear ME Please

in BIOS Requests ONLY!

08-20-2024, 04:47 AM
But that dump is from another reserv board which has MXIC chip and even was functional as well. The only change i made was change display settings to discreate ONLY, and since then this Laptop turn on with fans spinning but beeping and no display.

Earlier i thought Winbond bios will work on MXIC board but I think they are not compatible with each other.

Therefore shared MXIC dump so please clean that plus make sure that the settings are set to default values.

Because I am sure by changing configuration to default will work on that board

...

See more | Go to post
Leave a comment:
EffiSon replied to HP Zbook Studio G5 - Clear ME Please

in BIOS Requests ONLY!

08-20-2024, 03:51 AM
Hi,

That does not work.

Can you please make this bios dump to default settings ?...

See more | Go to post
Leave a comment:
EffiSon replied to HP Zbook Studio G5 - Clear ME Please

in BIOS Requests ONLY!

08-18-2024, 02:28 PM
Description : HP ZBook Studio G5
ProdID 2ZC51EA¤AK8
S/N ¤ 5CD92348V3...

See more | Go to post
Leave a comment:
EffiSon replied to zbook 15 g5 DA0XW2MBAG0 schematics needed

in Schematic Requests ONLY!

08-18-2024, 04:41 AM
Perfect, thank you very much...

See more | Go to post
Leave a comment:
EffiSon replied to HP Zbook Studio G5 - Clear ME Please

in BIOS Requests ONLY!

08-18-2024, 04:38 AM
Sorry about that and thanks for sharing the rules to remind about it.
Created a new thread now...

See more | Go to post
Leave a comment:
EffiSon replied to HP Zbook Studio G5 - Clear ME Please

in BIOS Requests ONLY!

08-18-2024, 03:37 AM
Hi,

Can someone please put that bios settings to default ? or does the clear me works the same ?

Thanks

Edit:

[B]Created a new topic instead of taking over other person thread[/B]Hi,

Can someone please put that bios settings to default ? or does the clear me works the same ?

Thanks

Edit:

[B]Created a new topic instead of taking over other person thread[/B]...

See more | Go to post

Last edited by EffiSon; 08-18-2024, 04:37 AM.
Leave a comment:
EffiSon replied to zbook 15 g5 DA0XW2MBAG0 schematics needed

in Schematic Requests ONLY!

08-18-2024, 03:27 AM
Thank you very much

EDIT:
I just realize that the shared boardview has some issue, i tried to open with boardview and flexBV but no luck
can someone please verify that if the isssue is at my end or with the file ?

[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3331564}[/ATTACH]Thank you very much

EDIT:
I just realize that the shared boardview has some issue, i tried to open with boardview and flexBV but no luck
can someone...

See more | Go to post
Leave a comment:
EffiSon replied to zbook 15 g5 DA0XW2MBAG0 schematics needed

in Schematic Requests ONLY!

08-09-2024, 03:07 PM
Hi,
Thanks, can you please share the board file as well...

See more | Go to post
Leave a comment:
EffiSon replied to HP ZBook Studio G5 DA0XW1MBAI1 REV: I Schematic & Board View request

in Schematic Requests ONLY!

08-08-2024, 08:03 AM
If the whole schematic is not possible to share then please share the board id area !!!
the idea is to change the board id resistor to disable on board graphics card / discreate / nvidia...

See more | Go to post
Leave a comment:
EffiSon replied to HP Zbook Studio G5 - Clear ME Please

in BIOS Requests ONLY!

08-08-2024, 06:09 AM
Hi,

Sorry if that is off topic

I bought the replacement motherboard for HP ZBook Studio G5 and was playing with its BIOS while accidentally i changed the display setting to ONLY discrete and since then i never got a display
Laptop keeps beeping and restarting and i have a doubt that its discrete NVIDIA card is not functioning either from the beginning or because of my some wrong bios configuration

So now the question is how can i reset the bios to its default setting ?

Thanks in advance...

See more | Go to post
Leave a comment:
EffiSon started a topic HP ZBook Studio G5 DA0XW1MBAI1 REV: I Schematic & Board View request

in Schematic Requests ONLY!

08-08-2024, 06:04 AM
HP ZBook Studio G5 DA0XW1MBAI1 REV: I Schematic & Board View request

Hi,

Can someone please share the Schematic and Boardview for HP ZBook Studio G5 DA0XW1MBAI1 REV: I

Thanks...

See more | Go to post
EffiSon replied to ASUS ZenBook UX3404 Water Damage - Schematic / Boardview / Component detail Needed

in Schematic Requests ONLY!

05-05-2024, 01:30 PM
Hi again,
Is it possible to share the power cycle of the schematic ? sinice i did not find out the component now i wanted to go and check its power blocks
or if someone else has any other suggestion ?

Thanks

See more | Go to post
Leave a comment:
EffiSon replied to ASUS ZenBook UX3404 Water Damage - Schematic / Boardview / Component detail Needed

in Schematic Requests ONLY!

04-23-2024, 12:28 PM
Thank you very much.

I can't find that component available nearby, does anyone have any alternative part number for the given component [B]SY8883[/B]Thank you very much.

I can't find that component available nearby, does anyone have any alternative part number for the given component [B]SY8883[/B]

See more | Go to post
Leave a comment: