ACER NitroLA-H501P ,Starts turns ON & OFF

[ravi_1617]

Hi,
Acer Nitro AN515-54 EH50F Compal LA-H501P
Baord turns on and off in a 20-30 seconds. with adapter or battery same.

PL1101 getting 0.08 volt when on, It should be +1.05
when opened PJ1101 ,reference to ground shows 1.6 Ohms (chip side PU1110)
PL1801 +1.8VALWP present when on is fine

no power at other coils show ,
Should i replace PU1101 SY8288RAC ,or anything else to be checked.

Thanks

[Sephir0th]

Re: ACER NitroLA-H501P ,Starts turns ON & OFF

You could be lucky when Controller Side is shorted instead of Output (PCH).

So yes, i would Remove PU1101 and Look whether the short is gone.

[ravi_1617]

Re: ACER NitroLA-H501P ,Starts turns ON & OFF

You could be lucky when Controller Side is shorted instead of Output (PCH).

So yes, i would Remove PU1101 and Look whether the short is gone.

Yes looks fine after removing PU1101 no short any more, placed order for chip

[ravi_1617]

Re: ACER NitroLA-H501P ,Starts turns ON & OFF

Hi! update
After replacing PU1101 getting 1.05 volts ,but still no progress ,turns off . PL 1101 also getting heated little bit ,
Disconnected PJ1101,JPH1, 42 Ohm,JPH2 30.9Ohm
Power consumption 0.20 Amps

[ravi_1617]

Re: ACER NitroLA-H501P ,Starts turns ON & OFF

No one to reply..

[ravi_1617]

Re: ACER NitroLA-H501P ,Starts turns ON & OFF

Update
PLV2,PLV3,PLV4 coils showing 000.4 -6 Ohms. After opening reference from Gnd

[piernov]

Re: ACER NitroLA-H501P ,Starts turns ON & OFF

Resistance to ground lower than 1ohm is normal on GPU VCore for NVidia 1000 series and newer.

[Marc97]

Re: ACER NitroLA-H501P ,Starts turns ON & OFF

Hi,
Acer Nitro AN515-54 EH50F Compal LA-H501P
Baord turns on and off in a 20-30 seconds. with adapter or battery same.

PL1101 getting 0.08 volt when on, It should be +1.05
when opened PJ1101 ,reference to ground shows 1.6 Ohms (chip side PU1110)
PL1801 +1.8VALWP present when on is fine

no power at other coils show ,
Should i replace PU1101 SY8288RAC ,or anything else to be checked.

Thanks

replace or check PU301,, IF it has,, or same as mine EH5VF LA-H501P REV 1A

mine was fix the same issue on yours,, tnx