Hi, I have a customers laptop with a blown MOSFET. I'm not a component level technician, I replace the motherboard when faulty. But I see a blown/burned MOSFET at location Q30 labeled 4800B.
I realize this could be the result of something else shorted, but I thought I would try to replace it - if it works, great - if it still fails, then it's time to replace the motherboard or scrap it.
I have a lot of junk boards laying around. I found a 4800B chip on one of them. The question is, there are other markings on the chip below the 4800B that don't match.
I've attached a picture of the chip. Can anyone tell me if the markings below 4800B are important?
I realize this could be the result of something else shorted, but I thought I would try to replace it - if it works, great - if it still fails, then it's time to replace the motherboard or scrap it.
I have a lot of junk boards laying around. I found a 4800B chip on one of them. The question is, there are other markings on the chip below the 4800B that don't match.
I've attached a picture of the chip. Can anyone tell me if the markings below 4800B are important?
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