AFS CHANNEL
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Today class login id 821-282-805
link π
https://global.gotomeeting.com/join/821282805
classs will start at 10pm night.
link π
https://global.gotomeeting.com/join/821282805
classs will start at 10pm night.
Forwarded from Nicomp Technologies
CASE STUDY NO 1
MODEL NO- CEDAR 13269-1
PRIBLEM - NO DISPLAY
1) Motherboard observations kiya patachala ki pahile kise us motherboard kam kiya hai
2)Dc reding - 30
3)Coil ki values check kiya reading ok
4)Voltagees check kiya to ram ka voltage nahi banrahatha
Ram section yaha kam liya tha check to ram ic our 2fet change kiya tha ic ki voltages check kiya
Pin 12 pe 5v tha
Pin 16 s5 3.3v
Pin 17 s3 4.8v
Pin 6 vref 0.27 tha
Vref pe pc4902 pf cap missing tha dusre m/b same cap lagaya check kiya to same reading tha cap betya huva cap ka drysoldring check kar raha tha to bajuka cap pc 4903 corvtion tha to uska reading check kiya to 259 dikha rahath to o change kiya our check kiya
Boom motherboard ko display aagya
Thank you πRAFI SIRπ
MODEL NO- CEDAR 13269-1
PRIBLEM - NO DISPLAY
1) Motherboard observations kiya patachala ki pahile kise us motherboard kam kiya hai
2)Dc reding - 30
3)Coil ki values check kiya reading ok
4)Voltagees check kiya to ram ka voltage nahi banrahatha
Ram section yaha kam liya tha check to ram ic our 2fet change kiya tha ic ki voltages check kiya
Pin 12 pe 5v tha
Pin 16 s5 3.3v
Pin 17 s3 4.8v
Pin 6 vref 0.27 tha
Vref pe pc4902 pf cap missing tha dusre m/b same cap lagaya check kiya to same reading tha cap betya huva cap ka drysoldring check kar raha tha to bajuka cap pc 4903 corvtion tha to uska reading check kiya to 259 dikha rahath to o change kiya our check kiya
Boom motherboard ko display aagya
Thank you πRAFI SIRπ
β€3π1