Re: Gigabyte RTX 2070 error 43 but no artifacts, crashes on driver load
You have to compare the measurements between all DrMOS. If one is bad you will see it. You won't get a good looking rectangular voltage curve. Maybe you will have a higher ripple.
Schorsch87
Senior Member
Last Activity: 11-10-2021, 03:56 AM
Joined: 02-03-2013
Location: Mainz
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Re: Gigabyte RTX 2070 error 43 but no artifacts, crashes on driver load
You need a scope to check switching frequency and amplitude....Leave a comment:
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Re: Software to analyze Video RAM faults on graphics cards?
Hi, this is a really good guide by an absolute smart guy.
[url]https://www.youtube.com/watch?v=vP9ja6OYLAY[/url]Re: Software to analyze Video RAM fa...ja6OYLAY[/url]Leave a comment:
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Re: MSI B450 Mortar Max bios dump needed.
Are you sure the password is stored in the bios? This will be more likely in a TPM chip or something similar.Leave a comment:
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Re: GIGABYTE RX-560 4GB OC unresponsive
How does this work? Could you please give an introduction....Leave a comment:
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Re: Rare problem on MSI Z77A-G41 board when powering up
This behaviour leads to a dead pch. I had the same problem with an x58 board from gigabyte....Leave a comment:
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Re: Dell Optiplex 3050 Micro amber flashing
Could you please provide the solution. Maybe this will help other people.Leave a comment:
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Re: EVGA GeForce GTX 1060 SC missing capacitors and grilled one
Maybe you could tell which components were defective and what values they have....Leave a comment:
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Re: Dell Precision T3500 - 09KPNV motherboard repair
Hi,
momaka said it. For testing you can use a thin wire or maybe a fuse for bridging the contacts....Leave a comment:
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Re: Dell Precision T3500 - 09KPNV motherboard repair
I would say, that on this places inductors have to be, because of the naming with L114 and L101. As for testing I would solder in some fuses to check whether the mainboards starts up.Leave a comment:
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Re: inno3D GTX780 no picture, not recognized
I found the failure. The NCP4206/4208 does not start if there is a missing driver mosfet. I wanted to start the card with just 5 of 6 phases but the phasecontroller doesn't start. So I soldered in a working mosfet and the card is running again.
Summary: 1 defective SIC780.
Best regardsLeave a comment:
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Re: Graphics card Schematics and Boardviews
Does anybody has the schematic or boardview of the following cards?
inno3D GTX780
Gainward Phantom GTX780
Thanks in advanceLeave a comment:
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Re: inno3D GTX780 no picture, not recognized
Thanks for your answer. The linked thread I do know. So I will try to find out the faulty component. I think this will be difficult because till now I can't trace back where the signal comes from or should come from. I will test again and keep you informed.Leave a comment:
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inno3D GTX780 no picture, not recognized
Hi guys,
I have a inno3D GTX780 on my bench which has a defective GPU VRM Mosfet Sic780. I removed this and wanted to test the card. The card doesn't give any picture and is not recognized by windows. So I measured the main voltages and there I saw the culprit. Some voltages are missing as you can see in the attached images. The two PWM-Controllers do not have an enable voltage. Now my question. Does anybody know where the enable voltages are generated?
Best regards... -
Re: How to test mosfets in parallel circuitry
This is what I wanted to hear. Maybe I will try this.
Thanks you....Leave a comment:
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Re: How to test mosfets in parallel circuitry
One of the right 4 couples on the picture is bad. I measure a short. So it would be best to solder them off. Maybe it's not the last one which is bad
...
Leave a comment:
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How to test mosfets in parallel circuitry
Hey guys,
I have the question mentioned in the title. Is it possible to get the bad mosfet within a parallel circuit?
I think i read something about a current limited supply and look which of the transistors is getting hot?
Would this work without destroying another parts on the board?
Best reagards -
Re: Dell 2407WFPb Monitor - Bad Cap
Hey guys,
I found the faulty component. IC651 was defective. Even if it is not shorted pin8 to pin4 it can by faulty.
So I changed R603, IC651 and IC601 just in case.
Thank you guys.
kind regards and a happy new yearLeave a comment:
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Re: Dell 2407WFPb Monitor - Bad Cap
But I do not measure any shortcut on IC601 pins. And on IC651 I also do not measure shortcuts or the suggested 42Ohms. It's all in the kOhms range or above.
But to be sure I ordered IC601 and will swap that one.
C605 doesn't show any damage also Q651 doesn't measure a short. If it were shorted I can't measure the 310V over C605, am I right?
Regards...Leave a comment:
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Re: Dell 2407WFPb Monitor - Bad Cap
Hey Guys,
nobody wants to help me?
So I did the audiojack mod to verify the display and the other boards are working. And they do!
So the problem is really the power board. Does anybody have an idea what to check next. 19V are not present!
RegardsLeave a comment:
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