Zakyn
Member
Last Activity: 12-07-2024, 05:31 PM
Joined: 08-23-2023
Location: Lazne Bohdanec
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AMD Radeon RX 5700 - all memory chips fault
Hello, I bought broken RX5700, found out the both MVDD ICs ( IR35217) were gone, replaced them. Now card is recognized but dmgg.py shows fault on all memory channels. So it is really possible that those burned ICs burned all memories ? -
I maybe have solved it, I noticed that circuit for DP bypass have tear away IC with two MOSFETS, according to schematic it detects dongle in DP and then bypasses HDMI 1 or 2. When i replaced it, GPU gives output, after few days of testing (multiple resets and stress tests). But I am not sure if it is just luck or it was realy it.
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On page 47,48 you can find PWM controller and MOSFETS schematics memory phases, then you can measure values of resistors in feedback loop, that may cause the problem. Also adding the PDF boardview so you can locate components easily (I hope it matches your board version)....
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ASUS Radeon DUAL-RX580-O8G, randomly not working
I am having issues to diagnose whats wrongs with ASUS Radeon DUAL-RX580-O8G, sometimes its not recognized/ no output, sometimes works fine for hours under 100% load (benchmarks/games). All voltages OK, BIOS chip replaced to be sure, what should I check next? I am guessing some solder balls cracked (maybe sometimes not connected), so should I do a reball?
One thing that is suspicious, I run dmggy.py to check memories, the script output is all memory banks are fine, but during the test the screen sometimes go black and some artifacts blinked very shortly (not always the same collumns,... -
Coil removed injecting 1.8V, power supply max current 4 A, nothing is geting hot so i guess the core is able to to dissipate 7W of heat?...Leave a comment:
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Yes I am measuring ohms and it is 0.0 ohms. Core is clean, so its gone, thanks for help.
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MSI GTX 1660 Super - all rails shorted?
I received a broken MSI GTX 1660S, not detected in the PC. There is no short circuit on 12v and 3.3v. 5V is present. So I moved to 1.8V, and it's missing, so no other voltages will be there. Against ground I am measuring 0.0ohms on 1.8, PEX, VMEM and VCORE. Is it dead core, or Turing GPUs has that low resistances? And its possible that it burned in a way that all rails are shorted? As sanity check I removed GS9216 buck converter and replaced it with new one but still no 1.8V. Can anyone please confirm that I can put this GPU away? -
Re: MSI MAG B550 TOMAHAWK - CPU error, boardview REQ
Thanks, I will take a look on that....Leave a comment:
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Re: MSI MAG B550 TOMAHAWK - CPU error, boardview REQ
Do you still have them? I accidentaly erased SPI flash memory, without backup Can I ask you for favor? I really need dump of that memory. Its part U46.
I managed to get boardview and schematic:...Leave a comment:
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Re: MSI MAG B550 TOMAHAWK - CPU error, boardview REQ
I have waited 15-30 minutes each try, tried different USB sticks with various BIOS versions. I managed to get schematics and boardview so I will track singals of power sequence and hopefully find out what is going on.Leave a comment:
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MSI MAG B550 TOMAHAWK - CPU error, boardview REQ
Hi, I've MSI MAG B550 TOMAHAWK, which stuck on CPU error (red EZ debug LED is on).
1. I've tried to flash BIOS from USB with no success (stuck on red LED blinking).
2. No component is overheating.
Does anyone have boardview of this mobo? I would like to trace the problem, but without boardview is pretty hard task. Thanks for any help. -
Re: New Members - please post your introductions here
Hi, I'm an electronics enthusiast and like to tinker with everything. I hope that I can find advice here for some problems that I don't know how to deal with and I will be happy to help if I canLeave a comment:
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