Hello, I have two identical circuits and one has a component with a hole in it, it is some sort of MOSFET driver, as two gates of large MOSFETs are connected to the lower right pin of it, I'd rather avoid guesswork if positive identification is possible.
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I listen carefully to the opinions of experts. It seems to be the ldo of the 1.8 volt rail, but it is difficult to accurately check it with the upper marking, so the help of experts is needed! The upper marking is L1CA. Thank you very much for your comments. thank you... -
Hi All,
I'm trying to repair a PCB that has some surface mount SOT23 devices that apear to be transistors but testing them on the board are giving confusing results.
Its named FS45 but I can't find a datasheet that seems correct.
The device is used in 10 places on the PCB. In 4 cases they appear to be controling triacs and the attached picture it shows it connected to a BT136 triac with the FS45 connected to the gate leg of the BT136.
Can anyone identify the device and suggest an alternative?
Many thanks.
PS: I have... -
Hello everyone,
I have a problem with my Acer predator XB241YU screen. When I plug it in, the startup LED turns on instantly, and I can't turn off the screen without unplugging it.
After disassembly and inspection of the electronic cards I found what looks like a broken inductor, it is marked with the letter A and is at location L58.
In the first photo you can see the broken component, in the second photo you can see where it is on the board, in the third photo you can see the silkscreen and in the fourth photo you can see the identification sticker of the main board
I... -
this laptop was damaged by a roof leak at the repair shop that it was at while waiting for a replacement cpu fan. It was given to me to try to save the motherboard which wouldn't power up anymore. The only issue now is that an sot23 marked R1 is missing one of it's three legs. I cannot find schematics for this model but I found a mosfet that has the same label but i'm not sure if it's an actual match. CJ3401 is the one that I found but I have no clue about the true identity of the damaged one. -
Hey guys! my name is kyle, new to motherboard troubleshooting and a little confused still on chip identification if yall could help identify this chip..
also if you could teach me how to fish on this particular topic... i did read through the ic identification sticky, and couldnt identify this with that info... thanks!
EDIT, just realized thats a 5 and not an S in the first line... finding results for it now. cant figure out how to take down thread so im not embarrassed...
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