a2251 820-01949-a boot looping after screen replacement

[Junior††]

not sure how it happened but after replacing the screen on a2251 macbook it:

fans turn on for a second or 2, turn off, apple logo shows, 5-10 seconds pass and then system cuts off then cycles

thermal camera shows these are getting quite hot although i'm not sure what do to.

i've tried internet restore, same thing, put the old screen back on, same thing. which i'm inclined to think i f'd this up somehow or another. or the part that was given is faulty and caused something to go wrong. but I want to believe it's someone not me, but i'm prepared to think i...

[AustinCER]

Hello, I currently have a Dell XPS 8940 in our office for repair.
Service Tag: HG1Y673
The most recent BIOS is pictured below -- being available as an .exe on Dell website.

Needed a new motherboard due to power surge. The motherboard replacement was installed and upon power up it was booting to a display message - Manufacturing Mode Active -

Have not dealt with this issue before or what the proper steps are. I booted to the BIOS and manually entered the Service Tag, but upon each reboot -- the service tag is wiped and shows the Manufacturing Mode display message,...

[rddube]

Hello friends,

Looking for some guidance here. The RAM voltage circuit on this motherboard keeps burning out PU301 which is a RT8231AGQW. Copy of the board with the burnt chip attached with some voltage measurements and copy of the schematics also included.

I think I've checked almost every component in the circuit, but when I change the RT8231, the laptop starts I have 1.2V on the inductor for about 10 seconds and then the RT8231 goes south and no more voltage on the inductor. All other voltages on the laptop are good, this is the only one conking out for a reason I...

[6ndr6w6]

BIOS PLEASEE

The notebook turns on and the fans spin but there is no display.

IdeaPad3 15ALC6

HS461&HS561&HS761 NM-D521 REV 3.0

MO: PE9013604027
MTM: 82MFS00100
S/N: PE0AS1AK
CPU: Ryzen 5 5500U...

[Blitzbirnle]

Hi everyone,

I'm having an issue with my motherboard (GALE 4G WHL MB-18709-2, model 15-cn1103ng). The problem is that one IC near the battery connector gets hot, causing the system to enter a boot loop — it powers on briefly with the fan spinning, then shuts down again after about a second.

IC shows:

7J=5J
T3J

I've attached a picture of the IC in question. If anyone can identify this component or has seen a similar issue, I'd really appreciate your help!

Thanks in advance!...

[tuner2000i]

hello everyone,

I don't normally do tv repairs but this is a case with my personal TV which got fried together with many other electronics in my house after a thunderstorm.

The TV is a Philips 65PUS8518/12 which had no power. I measured and concluded that the main board was probably fried through ethernet or hdmi. I found a board with same number 715GD328-M0F-B00-005Y (I had G) but from a 55PUS8518. The TV starts but the image is doubled, distorted. I need to set the panel code which is 016 according to the sticker on the back but I can not seem to do it.

...

[neandertool]

Hi, hoping someone can help me out with this one. My laptop just died and I really need to get it fixed. Thanks in advance!

[taso]

Hi everyone:

Anybody know anything about a N.switch without resistance in 6 & 19 pin (D+) in USB C conector? This is a HAC-10 board, all conector pins al good. Console runs ok but charging in very very slow 005 mAp.
Thx!!!...

[JuanLove]

Hey, I have a laptop board that is missing some components. I need a boardview or schematic.

Thanks in advance.

JuanLove