I have the above mentioned MBP, quick scan with thermal camera revealed that only U3200 was heating up. I found that C3208, C3219 and C3205 were all reading ~6.8ohms to ground.
so I swapped U3200.
I connected the PSU again for a quick check on thermal it's drawing about the same amount of current but now I'm seeing only heat radiating from U7800 and the T2 chip from under the black shielding fabric, and the bottom of the board.
It's hard to judge the actual temperature without removing the shielding.
Does anybody have any insights?
PPBUS_G3H is...
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-
Today, 06:07 PM
-
For those in 220V locales, anyone power their SMPS with DC, and how high of a voltage is okay?
What kind of PSU?
I suspect that 240V * sqrt(2) = 340V DC is probably fine because that would be about how much the the primary rectifier ends up with peak voltage. Just wondering, other than input capacitor voltages, can one go up above this 340V without damage? Will that input capacitor be the upper bound?
Wondering if exactly that, can I feed near 400VDC into bona fide specced at 220V SMPS without damage?
Currently have a 120/220V switchable SMPS I want to see if I...Yesterday, 08:03 PM -
Hi,
I got corrupted bios bin file, which way is correct to repair.
File puts errors on Me Analyzer and cannot open in FIT.
To open in FIT I made:
1. Extract MFS and EFS using MEAnalyzer from other bios file with the same parameters
2. put it in HxD to my file
3. MEAnalyzer shows 1 error after that
4. file opens in FIT
and:
A:
1. extract current dell bios on website
2. put System BIOS with BiosGuard v1.30.0.bin using FIT
3. MEAnalyzer OK no errors
(this version shows only logo at bootup - freezeing)...Today, 06:16 PM -
Hello guys,
i got this laptop from a friend to solve a problem.
The Laptop got a black screen. After turning it on, the keyboardlight is on and the fan working sometimes but nothing to see. The LCD is fine.
I did the LCD selfttest.
I think my friend tryed to update the Bios and failed.
I have a TL866 ll Plus and ordered a SOIC8 clamp. I want to flash the Bios on circuit.
I don't know which of the two chips are the bios.
Near the CMOS Battery: MXIC MX25L8006E
Near the CPU: AH1721 259(8)128CSIG E7A026 the 9 can be a 8.
...Today, 08:41 PM -
Can any one find me the bin file of Asus X540UA. Core i3 8 gen and on board vga. Bios are locked and need to flash new bios. Please help me !Today, 02:38 PM
-
So we have a DELL XPS 9520 a woman broke her screen and needed an immediate replacement so we removed bitlocker and put her Drive in an Asus TUF gaming laptop, everything is hunky dory.
We happen to have another DELL XPS 9500 screen that is compatible with the 9520, so tried installing new SSD's and doing a clean windows 11 install.
During formatting the installer can't find the Intel drivers for the nvme controller?
I spend a long time figuring out how to extract the drivers from the official dell installer downloads tried different versions, was able to load the drivers...04-21-2024, 06:11 AM -
please help me remove pass bios asus a1505 13th gen...Today, 12:33 AM
-
Hi,
I've got a problem with laptop Asus ROG GA503R, laptop power on (it does take a while) show asus logo and then it stuck on the black screen noticed that laptop goes to windows. I've tried new LCD, no difference, I can go to BIOS, laptop would stay on can change options etc., tired boot it externally with disconnected LCD and it only display on BIOS, attempt to boot to Linux, same problem.
I would provide with board model tommorow....Today, 04:15 PM -
have been looking at earth leakage clamp meters and its like a minefield out there . i wondered if anyone here had bought one that actually works properly ?...04-17-2024, 01:31 PM
-
Hi there,
I got this laptop which was not working at all. When attached to an amp-meter, the meter wasn't working at all also. I quickly found out that the PD-Power switch was gone and fully shorting to ground. After replacing that (NX20P5090) I got live back into the laptop.
Now the battery is charging, charge indicator is working and the power led is blinking 3 times when i attach a charger. but, unfortunately, this is it. When i push the power-button, the power led turns on, but that's it. No display, no beep, no fan spin, nothing (but cpu gets warm).
I tried flashing a new...04-19-2024, 03:01 PM
-
I have the above mentioned MBP, quick scan with thermal camera revealed that only U3200 was heating up. I found that C3208, C3219 and C3205 were all reading ~6.8ohms to ground.
so I swapped U3200.
I connected the PSU again for a quick check on thermal it's drawing about the same amount of current but now I'm seeing only heat radiating from U7800 and the T2 chip from under the black shielding fabric, and the bottom of the board.
It's hard to judge the actual temperature without removing the shielding.
Does anybody have any insights?
PPBUS_G3H is...Today, 06:07 PM -
hello everyone I am looking for a solution for my tv, I think corruption of the eemc,
the TV starts, LG logo, then nothing (rear backlight)
no reaction to rear command or infrared
the usb procedure that I tried on the LG site is a procedure with the screen and the remote control so I can't.
I have a chance with a usb procedure or other if you have .bin
if any people have this main board
Sony LG 60la620s EAX64797004 (1.1)
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"1713895782944.jpg","data-attachmentid":3258485}[/ATTACH]...Today, 01:52 PM -
Hi,
I got corrupted bios bin file, which way is correct to repair.
File puts errors on Me Analyzer and cannot open in FIT.
To open in FIT I made:
1. Extract MFS and EFS using MEAnalyzer from other bios file with the same parameters
2. put it in HxD to my file
3. MEAnalyzer shows 1 error after that
4. file opens in FIT
and:
A:
1. extract current dell bios on website
2. put System BIOS with BiosGuard v1.30.0.bin using FIT
3. MEAnalyzer OK no errors
(this version shows only logo at bootup - freezeing)...Today, 06:16 PM -
Can any one find me the bin file of Asus X540UA. Core i3 8 gen and on board vga. Bios are locked and need to flash new bios. Please help me !Today, 02:38 PM
-
Hello guys,
i got this laptop from a friend to solve a problem.
The Laptop got a black screen. After turning it on, the keyboardlight is on and the fan working sometimes but nothing to see. The LCD is fine.
I did the LCD selfttest.
I think my friend tryed to update the Bios and failed.
I have a TL866 ll Plus and ordered a SOIC8 clamp. I want to flash the Bios on circuit.
I don't know which of the two chips are the bios.
Near the CMOS Battery: MXIC MX25L8006E
Near the CPU: AH1721 259(8)128CSIG E7A026 the 9 can be a 8.
...Today, 08:41 PM -
Hi people, i have an acer nitro 5 with motherboard model gh51m la-k861p , it came with the resistor pr103 blow up, i repaced that resistor, i check the coils plb2, pl301, pl501 and has no short to ground, i conect the charger and it doesnt power at all, i check pqb3 on pin 5 to 8 and its 19v, pin 1 to 4 its 0
so i repaced, pqb3, pqb4, and makes no change, still no acdrv, i replaced bq24781 and makes no change, still no acdrv, if someone can help pls, thanks, this are the schematic and boardview
[SIZE=14px][B][MOD EDIT] LINK to schematic & boardview[/B][/SIZE] -> [url...Yesterday, 11:30 AM -
So I'm having difficulty finding line drawings for this motherboard NM-C53. My charging port was broken. So I replaced it with a terrible solder job. Problem is pin 3 on the drawing I saw on here has it listed as adapter-id. Now I checked my other pins and I have continuity (resistance check from power to ground). Pin 3 shows nothing. Now I boot the computer and it says to use a power adapter with the proper wattage and won't charge. I have read that pin 3 is usually tied to a resistor that identifies the charging power thus disabled the ability to charge if it fails the check. I look at my board...Yesterday, 07:27 AM
-
Hi,
I've got a problem with laptop Asus ROG GA503R, laptop power on (it does take a while) show asus logo and then it stuck on the black screen noticed that laptop goes to windows. I've tried new LCD, no difference, I can go to BIOS, laptop would stay on can change options etc., tired boot it externally with disconnected LCD and it only display on BIOS, attempt to boot to Linux, same problem.
I would provide with board model tommorow....Today, 04:15 PM -
Toshiba portage x30-e-13m, FURRSY1 A4481A1_Main 16MB...Today, 12:56 PM
-
Hello everyone.
I'm troubleshooting a cisco switch, which seems to have an issue with the PSU.
The psu has the following power rails - +12v, -53.5V and +3.3V
When connected to power, the +12 and -53.5 seem to work fine, but the +3.3 starts at ~3v and then goes down to ~0 (I guess this is the cap discharging). This happens both when the cable is connected and not to the switch board.
Any ideas what might be causing this behavior?
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3258494}[/ATTACH]...Today, 01:58 PM