I have a asus k43sv rev 3.0, when plugged in the charger 19v rail is present but there is no 3v and 5v on coil, i noticed that RT8206A chip is getting very hot.anyone can help on this please
asus k43s laptop no 3v and 5v
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Re: asus k43s laptop no 3v and 5v
Whats your usual plan for dealing with a hot IC like this ? Measure voltage and resistance to GND. -
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Re: asus k43s laptop no 3v and 5v
datasheet is available for RT8206A. You need to measure voltage on certain pins like VIN/LDO/EN1/EN2/ENLDO/VOUT/PGOOD. Measure resistance on suspect pins.Usually replacing a hot ic wont solve the issue. The IC is getting hot as some voltage rail is shorted. You need to findout which is the culprit rail. Else, it"ll be sheer wastage of time. Succesful repair can be carried out only if you have a clear & well understood strategy.Comment
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Re: asus k43s laptop no 3v and 5v
here is measurement of the RT8206a
PIN6 VIN=19V
PIN7 LDO=0.27V
PIN4 ENLDO=6.27V
PIN 14 EN1=0V
PIN 27 EN2=0V
PIN10 VOUT=0V
PIN13 PGOOD1=0V
PIN28 PGOOD2=0V
does this ic is bad?Comment
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Re: asus k43s laptop no 3v and 5v
but why is the ic is burning hot? i check the caps connected to the ic no shortComment
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Re: asus k43s laptop no 3v and 5v
Check +3V EC is shorted or not. What is the resistance on Vout pin??Comment
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