Dell Inspiron 15 3542 wistron cedar 13269

[nabilgo]

i have probleme with dell 3542 mb numb istron cedar 13269 the laptop was dead after changing i/o he start working perfect but when i put the battery cmos and turn it off he dosent turn on until i remove the battery cmos again AND NOW THE IC PU4503 IS GETTING HOT AFTER I PUT THE POWER SUPLLY AND I ALL READY CHANGE THE IC AND THER'S NO SHORT IN THE BORAD CAN YOU ADVISE ME PLZ

[mcplslg123]

Re: Dell Inspiron 15 3542 wistron cedar 13269

Replace Q2402 located near io chip. You can remove Q3004 and replace it for Q2402. You can power on safely without Q3004 and its located near lan connector.

[nabilgo]

Re: Dell Inspiron 15 3542 wistron cedar 13269

But ic PU4503 is getting hot now ???

[Sametbey]

Re: Dell Inspiron 15 3542 wistron cedar 13269

Check VREG3 and VREG5 outputs on pin 3 of PU4503. IO related. was the IO program you just inserted. Have you posted a program to the IO.

[mcplslg123]

Re: Dell Inspiron 15 3542 wistron cedar 13269

But ic PU4503 is getting hot now ???

If Q2402 is bad,PU4503 will heat up. that's why the suggestion. Its the most common fault on cedar platform.

[mcplslg123]

Re: Dell Inspiron 15 3542 wistron cedar 13269

@sametbey, IO on this platform is NCPE285 which is not programmable.

[Sametbey]

Re: Dell Inspiron 15 3542 wistron cedar 13269

After q2402 stb. You can control the PU 4503 outputs

[nabilgo]

Re: Dell Inspiron 15 3542 wistron cedar 13269

Check VREG3 and VREG5 outputs on pin 3 of PU4503. IO related. was the IO program you just inserted. Have you posted a program to the IO.

it programme and the laptop was start normally

[nabilgo]

Re: Dell Inspiron 15 3542 wistron cedar 13269

After q2402 stb. You can control the PU 4503 outputs

I did change the Q2402 but pu4503 still heating up

[nabilgo]

Re: Dell Inspiron 15 3542 wistron cedar 13269

Replace Q2402 located near io chip. You can remove Q3004 and replace it for Q2402. You can power on safely without Q3004 and its located near lan connector.

I did what you told me but still the same problem

[nabilgo]

Re: Dell Inspiron 15 3542 wistron cedar 13269

To be more clear the laptop was on i did try to measure this resistance the first time the laptop shutdown i did turn it on again and did try to measure it again than the laptop shutdown and the ic stat becoming hot

[mcplslg123]

Re: Dell Inspiron 15 3542 wistron cedar 13269

Now check VREG3/VREG5/POWERGD on PU4503. Seems you killed PU4503. Resistance on VREG3/Vreg5??

[nabilgo]

Re: Dell Inspiron 15 3542 wistron cedar 13269

and i got PL 4502 SHORTED EVEN AFTER I removed the 3v and 5v ic all mosfeat and still shorted

[nabilgo]

Re: Dell Inspiron 15 3542 wistron cedar 13269

now check vreg3/vreg5/powergd on pu4503. Seems you killed pu4503. Resistance on vreg3/vreg5??

how i can check it plz sir?

[mcplslg123]

Re: Dell Inspiron 15 3542 wistron cedar 13269

You mean PL4502 is showing shorted even after Pu4503 Removed?? If so, remove Pl4502 and see which side is shorted and then inject voltage on shorted side to find out what is wrong. As always, start with 1V,1A and gradually increase the current. Dont exceed the voltage above 1V or you may kill the SOC also.

[nabilgo]

Re: Dell Inspiron 15 3542 wistron cedar 13269

you mean pl4502 is showing shorted even after pu4503 removed?? If so, remove pl4502 and see which side is shorted and then inject voltage on shorted side to find out what is wrong. As always, start with 1v,1a and gradually increase the current. Dont exceed the voltage above 1v or you may kill the soc also.

i think the pch is dead