hi , my motherboard is short after ram change. here is some pics. i think this component is short. thank you
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The angle of the shared last pic is not clear but appears to be with topside markings of "LE=" ? If there is an '=' in the markings, the part is from Richtek. Only the first 2 letters of the markings are relevant. The markings after the '=' are the manufacturer's datecode for this component and can be ignored.
In searching for 'Richtek LE=', the part is:
Richtek RT6258BGQUF
https://www.richtek.com/assets/produ...S6258BC-03.pdf
To confirm if this part is shorted, remove all power -> meter in resistance mode -> measure the resistance to ground for the output of this regulator. Also a good idea to test the same in DIODE mode on your meter. Red meter probe to ground; black meter probe onto the output of the point to test.
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thank you mon2 . i see now from datasheet that VCC and VOUT have short to ground also when component removed . but now there is no overheating component . when i test the component outside the board there is no short on it . how can i know what component is short ???
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From the schematic, there are a number of this part onboard. This exact part must be the one with a 'B' in the suffix. Based on this search, your defective part is @ U6002.
Can you confirm that VCC (pin # 9) is with a short? Remove all power -> meter in resistance mode. What is the exact resistance to ground? Same question for VOUT (pin # 10).
Respectively, VCC is a LDO (low current) output rail that accepts the high voltage on VIN and lowers it to a suitable 5 volt to power thic IC. Only being loaded by the IC and C6028. Carefully flux and remove C6028. Then check the resistance to ground again for VCC.
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ok thank you .i think cpu is shortingComment
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