Burnt Component Identification

[dj_ricoh]

hello guys!

anyone got a spare GTX 295?

i wanna find out what component its that.
It makes the video card dead when i plug it in.

The marking near its Q3 so no wonder it burn out.

kinda small for bigfoot card like this.

[Chungalin]

Re: Burn Component Indetification

You’re not alone:

http://www.tomshardware.co.uk/forum/...own-transistor

[R_J]

Re: Burn Component Indetification

How's your Russian? also I found this picture someone drew
It could be something like a si3443dv
https://translate.google.com/transla...26start%3D4640

----------------------------Copied--------------------
Analogs and manufacturers Si3443DV:
Si3443DV Vishay Marking не указан, скорее всего D1xx Si3443DV Vishay Marking Unknown likely D1xx
Si3443DV IRF Marking 3Ax Si3443DV IRF Marking 3Ax
Si3443DV Fairchild Marking .443 Si3443DV Fairchild Marking .443
NTGS3443T1 ON Semi Marking 443x NTGS3443T1 ON Semi Marking 443x
APM2601 Anpec Marking M01x APM2601 Anpec Marking M01x
STT5PF20V ST Marking STPN STT5PF20V ST Marking STPN
AAT8343 Analogic Tech Marking KExx AAT8343 Analogic Tech Marking KExx
x - код даты производства, партии товара и пр. x - code date of manufacture, consignment and others.

[dj_ricoh]

Re: Burn Component Indetification

OMG that`s so awesome thank you!

so i desoldered that burn component.

the single pin a.k.a GATE from Q3 goes to U1 P2349WF
all of the pins are ok. NO short, aside from pin 1.

today i wanna desolder U1 p2349wf and confirm that only that pin is shorted.

i will try to recheck and inject some voltage to be 100 % there is nothing else shorted.

i try to search for a datasheet but i can`t find anything related to P2349WF

I never done this type of work and this is my second video card that i wanna repair like this.

first one when up in smokes and burn my motherboard PCIE

I will never quit! NEVA :P

[Longbow]

Re: Burn Component Indetification

Based on others' experience here, would this be an FET, a pair of transistors or what? What is the usual deal for using 6-pin packages?

Not sure why the OP says "no wonder it is burned out".

Also I am confused by the statement, "the single pin a.k.a GATE from Q3 goes to U1 P2349WF. All of the pins are ok. NO short, aside from pin 1." OK you believe the blown part is an FET and have identified the gate is connected to another IC. Are you saying that pin 1 of the FET is connected to ground? If so, maybe it is supposed to be connected to ground. The only way you are going to make progress on this thing is to find a working board, and get someone to take d.c. and signal readings from it. Interesting to note the other reports of the same problem. Could this thing be part of a voltage regulator for U1?

[stj]

Re: Burnt Component Identification

i would say that's a voltage regulator.

[dj_ricoh]

Re: Burn Component Indetification

Based on others' experience here, would this be an FET, a pair of transistors or what? What is the usual deal for using 6-pin packages?

Not sure why the OP says "no wonder it is burned out".

Also I am confused by the statement, "the single pin a.k.a GATE from Q3 goes to U1 P2349WF. All of the pins are ok. NO short, aside from pin 1." OK you believe the blown part is an FET and have identified the gate is connected to another IC. Are you saying that pin 1 of the FET is connected to ground? If so, maybe it is supposed to be connected to ground. The only way you are going to make progress on this thing is to find a working board, and get someone to take d.c. and signal readings from it. Interesting to note the other reports of the same problem. Could this thing be part of a voltage regulator for U1?

I think this is the result of OVERCLOCKING

this is fairly new to me and for some reason so familiar what happen.

Working with notebooks all day, all i see now is n and p channels with belly pads for cooling.

No more iron required. This beeing an old card, the transistor was used it blew up because of "output rating vs heat"(old model)?
Not good enough.

[dj_ricoh]

Re: Burnt Component Identification

i would say that's a voltage regulator.

YES ! i did notice that! every forum i look around.

all sorts of kinky mods that you can achieve now with a software like MSI AB or EVGA Precision.

Yet they do the hardwire overclocking

For some reason, it`s cool! wires and a adjustable resistor!!! FLOCK ME!

They don`t know the Pentium 1 166Mhz with turbo to 200Mhz :O

I need to strip down a i7-6000 and do i fraking TURBO BUTTON in front of a case!

15%OC WITH A FLIP BUTTON from a 286 power supply.

[jarapunga]

Re: Burnt Component Identification

The question of component identification has also worried me guys when I tried to find the specs for this Fet in the photo attached. The part number is very clear but I need the datasheet or the ratings. Any ideas?

[dj_ricoh]

Re: Burnt Component Identification

The question of component identification has also worried me guys when I tried to find the specs for this Fet in the photo attached. The part number is very clear but I need the datasheet or the ratings. Any ideas?

This?

[R_J]

Re: Burnt Component Identification

ENE Technology P2349WF is supposed to be the same pinout as intersil 6549CBZ, but don't take my word for it.

[dj_ricoh]

Re: Burnt Component Identification

Alright.
So I close my own case .

I lifted U1 ,Q1 and I found some good results.

Because I don't have a bga station I can stop here for now.

Without lifting anything on u1 last pin was connected with Q3 and shorted.
After liftih U1 short was gone.
Q3 shorted to ground.. all pins.
Took it out was OK but pads still shorted.
Injected near 4 v on the right side and I found under U3 2 smd caps shorted.

Took them out, short still pressent.
Near 4.5v with 1.2amp consumption U5 started to heat up.

I think this is the end of my search until I lift that bga chip.

Thank you all for the next info.

I will buy those transistors and components. Maybe in he near future I will get a bga station and I will lift that bustard.