• MSI Radeon RX 470 ARMOR 4G OC - brak obrazu

Forum rules:Click here to view the forum rules

  1. Topic title should contain: the device's manufacturer, full model and the brief description of problem.
  2. Topic message should contain: the PCB marking code (required in case of hardware repairs), an extended description of problem, things you have checked/replaced/measured, your conclusions and the question. If you are not able to find the PCB marking code, please read THIS TOPIC. If you still cannot locate the PCB markings, please upload a clean, both-side photos of the mainboard - it is required to remove any films, modules or brackets possibly covering these markings.
  3. Before posting a new topic please read all topics in TRAININGS subforum and make a preliminary diagnostic based on the content of those trainings.
  4. Uploading of any complete schematics, BIOS / firmware files or any other kind of documentation, or linking to 3rd party websites with such files, is STRICTLY PROHIBITED. You can only upload the small portion of documentation or, link to BIOS file on UNVERIFIED BIOS FILES subforum, which simplifies the diagnostics/repair. You are not allowed to upload more then one complete page of instruction/schematic per single topic. The file you upload must not contain any watermarks, "confidential" markings, links or email addresses and cannot be password-protected.
  5. It is only permitted to describe one faulty device per single topic - you should always open a new topic for each subsequent device.
  6. Requesting of the full schematics, BoardView files, BIOS files or any other kind of documentation is NOT ALLOWED in this subforum. If you need to ask for any of these, you should open a new topic in DOCUMENTATION/BIOS REQUEST subforum.
This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).

#1 MSI Radeon RX 470 ARMOR 4G OC - brak obrazu


by bar007 27 May 2021, 11:49
Model płyty: MS-V341
Schemat: schemat-amd-radeon-rx580-rx570-rx480-rx470-msi-ms-v341-t58412.html

Karta graficzna nic nie wyświetla po zdjęciu chłodzenia i opaleniu karty nie grzeje się GPU oraz żadna z pamięci.

Rezystancja na cewkach :

L500 - 27 Om (po załączeniu zasilania 0,957 V)
L1889 - 0,8 Om (brak napięcia)
L1 - 0,8 Om (brak napięcia)
L503 - 0,8 Om (brak napięcia)
L505 - 0,8 Om (brak napięcia)
L504 - 0,8 Om (brak napięcia)
L506 - 0,8 Om (brak napięcia)
PL701 - 32,7 Om (brak napięcia)
ML1082 - 5.840 k Om (po załączeniu zasilania 12V)

Na kondensatorach C157, C151 i C152 12V , na C153, C154 i C155 3,3V.

Na układzie U300:
1 nóżka = 3,175V
2 nóżka = 3,245V
3 nóżka = 3,320V
4 nóżka = 4,984V
5 nóżka = 0
6 nóżka = 1,797V
7 nóżka = 0,790V
8 nóżka = GND

Wydaje mi się, że za mocno grzeje się układ U2:

1 nóżka = 11,74V
2 nóżka = 1,447V
3 nóżka = 0,765V
4 nóżka = 10,10V
5 nóżka = 11,92V
6 nóżka = 0V
7 nóżka = 0,540V
8 nóżka = GND

Co powinienem jeszcze sprawdzić? Profilaktycznie wymienić układ U2? Czy powinien delikatnie się grzać?

Re: MSI Radeon RX 470 ARMOR 4G OC - brak obrazu


by Google Adsense [BOT] 27 May 2021, 11:49

#2 Re: MSI Radeon RX 470 ARMOR 4G OC - brak obrazu


by matic 29 May 2021, 16:24
Hello!

How about the resistance and voltage to ground on coil L900 (ML900)?

#3 Re: MSI Radeon RX 470 ARMOR 4G OC - brak obrazu


by bar007 31 May 2021, 11:07
Znalazłem zwarcie na kondensatorze C914 oraz uszkodzone dwa rezystory 2 Om MR450 oraz MR451. Po wymianie elementów rdzeń grzeje się oraz pamięci.
Po włożeniu grafiki do komputera nie mam obrazu. Ale po uruchomieniu komputera ze zintegrowanej grafiki, RX 470 wykrywa ją jako "podstawowy sterowni ekranu". Po zainstalowaniu sterowników system wywala bluescreen-y. W trybie awaryjnym. Widzę, że grafika zainstalowała się jako RX 470. Profilaktycznie zaprogramowałem BIOS z techpowerup, ale bez zmian. Bez sterowników RX 470 Windows uruchamia się, ale ze sterownikami zapętla się bluescreen.


matic wrote:Hello!

How about the resistance and voltage to ground on coil L900 (ML900)?


L900 - 18 Om (po załączeniu zasilania 0,918V)

Czy to wina procesora?

#4 Re: MSI Radeon RX 470 ARMOR 4G OC - brak obrazu


by matic 3 June 2021, 21:39
bar007 wrote:oraz uszkodzone dwa rezystory 2 Om MR450 oraz MR451
The value of resistors MR450, MR451 is actually 0Ω (they are a jumpers, not 2Ω resistors).
Replace the resistors MR450, MR451 with a suitable value.

#5 Re: MSI Radeon RX 470 ARMOR 4G OC - brak obrazu


by bar007 11 June 2021, 09:13
It behaves the same on 2 Ω resistors and on 0 Ω resistors. When I connect, the monitor does not display anything. As trying to start on the integrated card, Windows hangs at startup.

Image

According to the scheme, there should be 2 Ω resistors on MR450 and MR451 it's true?

I found a schematic in this topic: schemat-amd-radeon-rx580-rx570-rx480-rx470-msi-ms-v341-t58412.html?hilit=MS%20V341

#6 Re: MSI Radeon RX 470 ARMOR 4G OC - brak obrazu


by matic 11 June 2021, 21:51
bar007 wrote:According to the scheme, there should be 2 Ω resistors on MR450 and MR451 it's true?
Not true. According to the schematic these resistors are 0Ω (jumpers).
Image
Image

Try to reflow the GPU.

#7 Re: MSI Radeon RX 470 ARMOR 4G OC - brak obrazu


by bar007 21 June 2021, 14:50
Thank you for your response! I changed the resistors to the correct ones. And I heated up the GPU. After plugging the card back in. The fans didn't start and there was no picture. After 10-15 minutes, the card started behaving as before. So it starts but no picture. Is the GPU damaged?

#8 Re: MSI Radeon RX 470 ARMOR 4G OC - brak obrazu


by matic 21 June 2021, 15:23
Measure the voltages to ground on all coils.

This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).

Who is online

Users browsing this forum: No registered users and 1 guest

_______________________________
All rights reserved. Unauthorised copying of this website's content or any of its part is strictly forbidden.
Any trademarks, brand names, products or services published on this website belong to their legal owners, are copyrighted and used for information purposes only.