MSI MS 6337 816EPT PRO ver5 problems

[Maxxx]

Hello!

Msi MS 6337 816EPT PRO ver5
Problem: 1 cap bad and 1 mosfet bad (see pics)
Specs:
Cap: Teapo, 1000uF, 6,3v, 105C
Mosfet: Panasonic,
N-channel logic level field-effect power transistor in a plastic package using
TrenchMOS™1 technology.
PHD45N03LT in SOT428 (D-PAK)
Reference JEDEC TO 252

VDS drain-source voltage (DC) Tj = 25 to 175 °C - 25 V
ID drain current (DC) Tmb = 25 °C; VGS = 5 V - 45 A
Ptot total power dissipation Tmb = 25 °C - 86 W
Tj junction temperature - 175 °C
RDSon drain-source on-state resistance
VGS = 10 V; ID = 25 A 16 - 21 mOhm
VGS = 5 V; ID = 25 A 20 - 24 mOhm

It is possible that another component was damaged when cap and mosfet died ?
Replacing the cap is not a problem, but the mosfet is. Can I replace it with another using
aprox specs or it's a must for the specs to be the same?
I found these mosfet candidates from salvaged boards:

Infineon:
VDS - 25 V
ID - 50 A
Ptot - 83 W
Tj - 175 °C
RDSon VGS = 10 V; ID = 30 A 5,0 - 5,9 mOhm
VGS = 4,5 V; ID = 30 A 7,7 - 9,6 mOhm

Fairchild Semiconductor:
VDS - 30 V
ID - 46 A
Ptot - 50 W
Tj - 150 °C
RDSon VGS = 10 V; ID = 12 A 12,5 mOhm
VGS = 4,5 V; ID = 12 A 16 mOhm

Thank you in advance for any advice or information.

[Maxxx]

Re: MSI MS 6337 815EPT PRO ver5 problems

MSI MS 6337 815EPT PRO ver5

Sorry!

[Rainbow]

Re: MSI MS 6337 816EPT PRO ver5 problems

That seems to be mosfet for VTT (for CPU) or something like that. The exact mosfet type is not critical - only make sure the new one has equal or better parameters. I think that both your Infineon and Fairchild replacement will work.
The exact type is critical when there are more mosfets connected in parallel or bridge driven by one chip (typical configuration for main VCC CPU power) - then all of them must be of the same type or something bad will happen.

[Maxxx]

Re: MSI MS 6337 816EPT PRO ver5 problems

It's possible that the CPU was damaged ? I didn't find another matching socket type board to test it.
The bad cap started all the problems ?