Device : Dell N4030, DJ1 Discrete Ver : 01
Problem : Over voltages.
3.3v : 3.7-4V.
5v : 5.20V
3.3V ALW : 3.30V
5V ALW : 5.05V
Vga Core : 1.50-1.80V (Ati 216-0774008)
Cpu(62882HRTZ) : 1.30-1.52V
RAM(RT8207GQV) : 1.80-2.10V
PCH VTT : 1.40-1.80V
It came with short circuited network chip(lan) and usb power cores problem. Chipsets were heated. Power button was runnig but there was no video and beeps. So I changed these parts;
-Atheros ethernet chip
-USB Power Cores
-EC Nuvoton NPCE781BA0DX
-Reflashed EC, Main flash.
-HM57
I heard error beeps but no video
-ATI 216-0774008
Finally I see startup screen but now it started to blue screens. I tried with 65W and 90W power supplys still same. When the card is cold voltages are normal for 10 seconds and then gets higher.
Second changes,
Sys Charger = BQ24745
DDR voltage = RT8207GQV
3.3-5V Core = (RT8205B(CK=XX))
Cpu Core = 62882hrtz
I fixed this problem before by changing "sys charger" on dell n5010 but this time didn't work. Voltages are still high. Can somebody tell me what is wrong with this motherboard...
Schematic :
https://lm9crg.dm2301.livefilestore.com ... 9-1%20(A01).pdf?download&psid=1