MB ID:ZRT
Case Study Problem : plugged in adaptor no power on and not charging
Solution : First I check VIN present, no auxuliary voltages at battery connectors.
I check with PSU 19V, it takes 0.28amp then decrease voltage from 19v to 17v.
now the laptop power on and working fine. So the problem is located at the power IC pin(6) 2.59v (acdet).
I check voltage divider working ok as in schematic
Now I replace 8k resistance in place of 10k now am getting voltage is 2.13v (63.4k-10k actual)
ok i give 19v from PSU ...LAPTOP is working fine.
Hi, Thanks for this wonderful post regarding the issues related to laptop adapter. Most laptop adapters malfunction when it is overly used and also when it is running on power all the time. We are laptop adapter dealers in Chennai and we always recommend to buy the new one.
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