la-9104p 3.3v & 5v Ic pin 18 enable signal not comming

[Sanjeewait]

hello i need to help
dell 3521 la-9104p 3.3v & 5v Ic pin 18 enable signal not coming

[SMDFlea]

Re: la-9104p 3.3v & 5v Ic pin 18 enable signal not comming

Which IC do you mean. PU200 is +3VALWP ,+5VALWP .Pin 18 is not connected.

[Sanjeewait]

Re: la-9104p 3.3v & 5v Ic pin 18 enable signal not comming

PU200 is +3VALWP ,+5VALWP .Pin 18 is not connected.

[mcplslg123]

Re: la-9104p 3.3v & 5v Ic pin 18 enable signal not comming

If there is no +3valw and +5v alw , Then first check pin16(VIN) and next check pin 8 & 17 for voltages. Have you checked resistance to gnd(diode mode) on PL200/PL201??