Palit GeForce GT730 4GB brak obrazu, nie wykrywana

Cześć, dostałem do pobawienia się taką oto kartę graficzną.
Model: Palit GeForce GT 730 4GB GDDR3 128bit (NEAT7300HDG1-1085F)
Objawy:
Karta nie jest wykrywalna na komputerze (sprawdziłem 3 różne), w menadżerze urządzeń również nie ma o niej żadnej informacji.
Po uruchomieniu komputera wentylator kręci się na 100%
Rdzeń robi się ciepły a po dłuższej chwili gorący. (sprawdzane palcem bez chłodzenia)
Pomiary:
Linia 12v ma 907ohm a 3.3v 1625 ohm
Linie pcie na przodzie gpu:
3 0.664v
4 0.664v

8 0.664v
9 0.663v

12 0.663v
13 0.661v

16 0.660v
17 0.661v

22 0.659v
23 0.661v

26 0.660v
27 0.661v

30 0.660v
31 0.659v

34 0.659v
35 0.661v

39 0.658v
40 0.657v

43 0.660v
44 0.660v

47 0.660v
48 0.659v

51 0.661v
52 0.658v

55 0.661v
56 0.661v

59 0.662v
60 0.661v

63 0.661v
64 0.662v

67 0.661v
68 0.664v

oraz te na tyle:
1 0.625v
2 0.632v

3 0.624v
4 0.633v

5 0.621v
6 0.631v

7 0.621v
8 0.630v

9 0.621v
10 0.630v

11 0.622v ||
12 0.629v

13 0.619v
14 0.625v

15 0.475v
16 0.470v

17 0.620v
18 0.627v

19 0.618v
20 0.627v

21 0.618v
22 0.626v ||

23 0.624v
24 0.616v

25 0.626v
26 0.616v

27 0.625v
28 0.617v

29 0.627v
30 0.616v




Chętnie przyjmę jakąś dokumentację do tej karty
Pozdrawiam i dziękuję

Hello!

- Measure the voltages to ground on all three pins of chip SU1.
- Measure the voltages to ground on both coils.

Sadly I don't know which chip is a SU1, so I measure these two chips on the back of the gpu (right side)
Bigger coil: 0.9v
Smaller coil: 1.5v

edit.: okay, now i see the SU1 mark XD

Measure the voltages to ground on pins A, B, C, D, E.

A= 12.06v
B=0v
C=0v
D=3.37v
E=3.37v

Set your multimeter to the diode test mode and measure the voltage drops to ground on points B, C with both polarities of test leads. Measure on the card unplugged from the motherboard.

It always display open line

ocho8 napisał(a):B=0v
C=0v

ocho8 napisał(a):It always display open line

Do you mean a short circuit, or open line?
A voltage drop of 0V means a short circuit, while OL on the meter display means an open line.

I mean when the card is in motherboard and pc is running there is no voltage on these pins. And with card unplug from motherboard, multimeter shows open line in diode test

Try to diagnostically heat the GPU chip with a hot air as described here.

After heating up chip still no display and still open line. No matter which probe I put on GND or B/C points

ocho8 napisał(a):still no display and still open line. No matter which probe I put on GND or B/C points

On some cards these two lines are not used (not connected at all). So this might be normal.

Do you have an oscilloscope?

Sadly, still dont have one..

Measure the voltages to ground on all pins of BIOS chip.

3.5ohm from gnd to core
>150ohm on memory

Measure the resistances to ground on pins 2, 5, 6 of BIOS chip.

2 - 7.16k ohm
5 - 7.24k ohm
6 - 8.95k ohm

Try to reflash the BIOS chip. Don't forget to save the old dump.
If nothing changes, the GPU is very likely damaged.

Done, also i tried different bios and zero changes. Yea, I guess core is dameged, thanks anyway!