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Additional info. After attempting BIOS update from Windows the computer failed to reboot screen went black. Computer will turn on, Power LED, Charging LED, but will not load windows. No display on LCD nor on external monitor. System powers up, but the computer seems to stop after accessing the hard drive. Letting it sit 30 to 60 min. has not resolve the issue. Tried BIOS recovery via ASUS.ROM, AMIBOOT.BIN, AMIBOOT.BIN and ctrl + HOME does ping the USB flashdrive, but no change.
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Need help cleaing BIOS ASUS ROG GU501
Need help cleaning the ME area and verifying that this BIOS is in a healthy state.
I was going to try and follow the guide from [url]https://winraid.level1techs.com[/url], but it seams that the image for CS ME12v33 is corupted.
Computer is an ASUS ROG GU501GM-BI&N8, SNJCNRCV02U691516
Mainboard is PN: 60NR00F0-MB4280 GU501GM 17652219
PT: N0CV1849MB0031295 69N14LM21F04(01)
I am attaching the BIOS file with the product key masked out.https://Need help cleaning the ME ar...e.<br /> I was...
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Thank you SMDFlea. I somehow missed this when trying to search for them earlier.
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The mainboard used in the Legion 5 15ACH6H is a NM-D562 Rev:3.0
Lenovo part number: 5B21C22564
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Is it Fixable? Lenovo Legion 5 15ACH6H
Hi Everyone,
I got in a Lenovo Legion 5 15ACH6H.
It was a nice gaming laptop with a Ryzen 7 5800H and RTX3060M, however; a screw came loose and shorted things out.
PSU is good. 20V to board. No power on any power rails. Power rails are not shorted to ground.
An unknown gate at location UI130 is blown up and I do not know what it is to replace it.
Caps near PL6202, PQ3002, PU7901 are all blown. If anyone can help me with the correct values to theses capacitors it would be very helpful.
The ITE3176FN-56A IC at location U122 has a hole in it and I will...
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Re: Lenovo Type C charging stuck at 5V
I am looking at the PD Controller chip as I am noticing USBC_VBUS20 and TBT_VBUS20 go to this chip.
Below are the voltages I mesured.
Does anyone know if these voltages look ok?
PD Conntroller
SN1701012RJTR (TPS65988)
01 PP_HV2 5.1V
02 __|
03 VBUS2_ 4.88V/-1.7mv depending on port power is plugged into
04 __|
05 VIN_3V3 3.35V
06 ADCIN1 3.016V
07 LDO_3V3 3.32V
08 ADCIN2 3.016V
09 PP_HV1 5.12V
10 __|
11...
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Re: Lenovo Type C charging stuck at 5V
Using the following schematics to track down my problem:
[url]https://www.badcaps.net/forum/showpost.php?p=1002788&postcount=3[/url]Re: Lenovo Type C charging stuck at ...tcount=3[/url]...Last edited by vexarvf1s; 07-19-2023, 05:00 PM.
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Lenovo NM-B501 mainboard Type C charging stuck at 5V
Looking for help.
I have a Lenovo ET480 NM-B501 mainboard that I needed to replace the usb-C port on.
After changing the port the computer works, but the DC-in from the type C power cord never goes above 5V.
I took pictures before replacing the USB port on the mainboard and I am not seeing any componets missing.
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Dell Inspion 16 7610
Loogking for schematics for a Dell mainboard.
DP/N 09FDV3
PN: 4550P3010005
CYBORG-H TGL-H RTX
19843-1
X3J88$JA
Trying to trackdown a short and I am afraid that the startup chip got cooked.
It is a MEC1515-NB
Thanks anyone that can help.
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Re: Acer: No power after first MOSFET no short? Looking for guidance.
S-G 17M
S-D 2.9M
G-D 0
But this was not the problem.
SOLVED:
the capacitor at PCB1 looks to have gone bad. It only measured 102nF when it should have been 1000pF per the schematic. I replaced it with a 1000pF cap and everything is working again.
[url]https://www.badcaps.net/forum/attachment.php?attachmentid=277265&d=1666648242[/url]
Thanks everyone for your help.Re: Acer: No power after first MOSFE...br /> S-D 2.9M
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Re: Acer: No power after first MOSFET no short? Looking for guidance.
Ok a new DC jack has been installed.
Adapter Detect is once again pulling to ground when the power adapter is inserted.
With the power adapter in ACDET now goes from to 2.64V.
I revisited ACDRV and checked the voltage. I am up to 20-22V with the resiter out of the gate control circut, but it is not stable and stops sending voltage after checking the gate voltage of the Hi and low side MOSFETs.
ACDRV is 6V over the value of CMSRC befor it shuts off.
I am guessing that when I check...
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Re: Acer: No power after first MOSFET no short? Looking for guidance.
Thank you for the quick reply mon2.
The charging IC is a BQ24781.
I am only getting 14.4 volts on pin4 ACDRV
REGN is at 0 Volts.
ACDET is at 0 volts. Is this correct?
I am not getting ADAPDET pulling down to ground from the DC Jack.
So I have ordered a new DC Jack and will recheck after I get it installed.
With ACDET not pulled to ground by 2N7002KW I did get 6.06 volts on REGN
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