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Re: component identification
it came out of a psuComment
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Re: component identification
Yes, unfortunately some factories still allow their workers to chew gum while working.
@ shovenose: open up a bunch of PSUs and find a component that looks just like that. Then see its markings on the PCB.
If it's makred with "R"-something, it's a resistor. Similarly, C is capacitor, L is inductor, D is diode, Q is transistor. There's more, but these are the basic ones you need to know for right now.
Once you know what it is, do a general Google (or Wiki) search on this type of component and see different examples of it. (hint: the numbers on the component you showed are not identification numbers but rather its ratings).
As for testing the rest of the components, I'm not sure if you can use your analog meter for that. Well you can measure resistance on a resistor and see if its resistance is within tolerance to the one indicated by the color bands (google resistor color bands if you need help).
If you have a digital meter, though, you can measure resistance or check continuity on pretty much everything as a general test. Diodes and resistors are the easiest to check.
A diode will show a reading one way but not the other. With the black probe on anode and the red probe on cathode, you should get no reading/open circuit (google/wiki "diode" to see which side is cathode and which is anode). If you do, and it's fairly low ohms, it's bad.Last edited by momaka; 11-26-2010, 11:06 PM.Comment
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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
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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... -
Hello everythone
i have on the bank hp elitebook 840 G4 6050a2854301 mb a01 missing 5V cause IC is damage on this board 5V and 3V IC is separatly
i have 3V but no 5V i found 5V IC damage . i need our help to find IC identification, the 3v ic has mentionned ALVH 572 i found reference but no see something like IC . I poste the 3V here if someone have is reference. i don't found motherboard schematique or boardview... -
Hi everyone,
I'm currently repairing a NEXIQ USB-Link 2 that was physically damaged due to crushing. After a thorough inspection, it appears that only one component is visibly damaged: the T5 component, located right next to the Mini-USB port.
It's a 4-pin SMD component, with one pin at each corner, aligned front-to-back along the USB port axis. Unfortunately, it is broken, and there are no visible markings left on the part to identify it.
I'm looking for help with the following:
The exact identification or part number of the T5 component
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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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