Dell 3542 Power on but restart continuously

Tips & Trick By Indiarefix Team If need on Whatsapp Than Ping Your Name City State & Country name to +919310896575
Post Reply
User avatar
Dhirendra Gaur
Posts: 571
Joined: Mon Nov 30, 2015 8:40 am
Cash on hand: Locked
Location: Ranchi Jharkhand
Has thanked: 71 times
Been thanked: 56 times

Dell 3542 Power on but restart continuously

Post by Dhirendra Gaur » Sun Sep 10, 2017 12:14 am

Tips N Tricks :- 5
Laptop model :-Dell 3542
PCB Number :- Cedar_Intel 13269-1
Customer complain :- Suddenly misbehaved
Problem :- Power on but restart continuously
Observation:- If we remove RAM it will stable ( no restart) , if we plugged RAM it will restart continuously
Solution :- First try physical observation,
because of rainy season most of the problem present due to moisture and oxidation , board was neat and clean no moisture no oxidation persist , after that check supply status almost all supply was stable, vcore is also stable then try to check data on Lpc bus , data is available now got an idea that CPU is in working condition but any one of s0- state requirements not full filled , first start with back tracing of s0-state supply's ,almost all supply's ware stable but 1D5V_S0 was misbehaved not stable, continuously (up - down) at pin no.5 of PU5101, try to check Impedance across to ground was matched to working board , so try to check input requirements of PU5101 was also full filled & stable, now PU5101 was suspected ,, but start with linear components so first remove PC5120

Bingo PU5101 output is stable now ,
The board turned on perfectly with RAM ,
Job done ✅
You do not have the required permissions to view the files attached to this post.

Posts: 2
Joined: Thu Nov 09, 2017 5:33 pm
Cash on hand: Locked
Has thanked: 0
Been thanked: 0

Re: Dell 3542 Power on but restart continuously

Post by Sundarnijanthan » Fri Jan 05, 2018 9:14 pm

good job.... but why u have to remove that i cant understand can u explain

Post Reply

Return to “Tips By Indiarefix Team”