• KFA2 geforce gtx 1660 super 1-click oc [Wentylatory nie kręcą się, brak PWM]

It is currently 14 December 2024, 07:02

KFA2 geforce gtx 1660 super 1-click oc [Wentylatory nie kręcą się, brak PWM]

 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 KFA2 geforce gtx 1660 super 1-click oc [Wentylatory nie kręcą się, brak PWM]

by lgolebio • 16 January 2024, 12:06
DZień dobry

Karta grafiki: KFA2 geforce gtx 1660 super 1-click oc
Oznaczenie płyty PCB: SH 94V-0 E248779

Objaw: Wentylatory na karcie graficznej włączają się tylko na sekundę zaraz po uruchomieniu systemu. Potem nawet wygrzewanie karty powoduje, że wentylatory nie ruszają. Na pinie PWM cał czas 1V.

Image

Ze schematu podobnej karty wyczytałem, że sygnał GPIO16_FAN_A_PWM idzie bespośrednio z GPU, czy to oznacza, że rdzeń jest uszkodzony ?
Image

Re: KFA2 geforce gtx 1660 super 1-click oc [Wentylatory nie kręcą się, brak PWM]

by Google Adsense [BOT] • 16 January 2024, 12:06

#2 Re: KFA2 geforce gtx 1660 super 1-click oc [Wentylatory nie kręcą się, brak PWM]

by matic • 16 January 2024, 21:29
Hello!

Do you have an oscilloscope?
If so, measure the voltage to ground on pin 1 of chip U16 and on pin 2 of fan connector J6 with oscilloscope in the following cases:
a) Immediately after turning on the card (when the fan is spinning).
b) After a while, when the fan is idle.

#3 Re: KFA2 geforce gtx 1660 super 1-click oc [Wentylatory nie kręcą się, brak PWM]

by lgolebio • 17 January 2024, 09:02
No. Currently I don't have oscilloscope. I'm going to buy it next month. However can you explain in more detail why I need to chceck it with oscilloscope?

#4 Re: KFA2 geforce gtx 1660 super 1-click oc [Wentylatory nie kręcą się, brak PWM]

by matic • 17 January 2024, 20:11
lgolebio wrote:However can you explain in more detail why I need to chceck it with oscilloscope?
With your "service level= 3" you should know why :wtf:

Since you measured 1V on the "PWM" fan speed control signal, we don't know, if this 1V represents the DC voltage (not fine) or an AC square wave signal (as it should be).
Another thing we want to check is the fan "tachometer" (feedback) signal on pin 2 of fan connector, where should also appear an AC square wave signal, when the fan is spinning.

If you don't have an oscilloscope, measure the voltage to ground on pin 2 of fan connector J6 with the fan disconnected from the card.

#5 Re: KFA2 geforce gtx 1660 super 1-click oc [Wentylatory nie kręcą się, brak PWM]

by lgolebio • 24 January 2024, 09:26
Sorry for delay, I was really sick. The client refused to wait and he took the card. I quickly made an adapter for 3PIN FAN on PC motherboard, which works. He will controll it manually from motherboard fan utility on windows.

Image

Re: KFA2 geforce gtx 1660 super 1-click oc [Wentylatory nie kręcą się, brak PWM]

by Google Adsense [BOT] • 24 January 2024, 09:26
 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
Similar Topics
  KFA2 GeForce RTX 2070 SUPER EX 1-Click OC - Słaba wydajność  [SOLVED]
Schemat Gigabyte GeForce GTX 1660 SUPER GAMING OC 6G (GV-N166SGAMING OC-6GD)
Schemat Gigabyte GeForce GTX 1660 SUPER OC 6G (GV-N166SOC-6GD)
Asus ROG G513IC - Nie kręcą się wentylatory.
Schemat MSI GeForce RTX 2060 Super VENTUS XS C OC MS-V809 A2070-6T17
Schemat Gigabyte GeForce GTX 980 OC ( GV-N980OC-4GD )

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.