• Xbox slim PWM fan regulation not working - what is wrong?

It is currently 8 January 2025, 12:05

Xbox slim PWM fan regulation not working - what is wrong?

 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 Xbox slim PWM fan regulation not working - what is wrong?

by nonename007 • 24 May 2013, 01:31
Hello,
I need help with this problem and maybe some of you guys solved something like this.
problem:
xbox slim 250GB, works fine, but fan is rotating on low speed. during playing games, console goes very hot but fan is still spinning on same speed. finally console freezing.
When I got this xbox I made reball of cpu/gpu because customer described problem like freezing during longer playing. because problem was even after reball, I tried made proper diagnostic.
I tried different fan and situation is same.(tested with open xbox and fan dismantled from heatsink). console goes hot but fan was still on same speed and console is shutting down automatically.
finally I check pwm with scope and pwm signal is there but is still same.

probably is faulty PWM controller on motherboard, but I haven't idea which one is it.

Can you help me with this fault?
--------------------------
Please You can answer in Polish,Czech or English. I can read polish text, but I can't write :)

I appreciate every help.
THX

Re: Xbox slim PWM fan regulation not working - what is wrong?

by Google Adsense [BOT] • 24 May 2013, 01:31

#2 Re: Xbox slim PWM fan regulation not working - what is wrong?

by mar244 • 19 June 2013, 21:56
Hi,

try giving power directly to the fan to bypass this chip.

Re: Xbox slim PWM fan regulation not working - what is wrong?

by Google Adsense [BOT] • 19 June 2013, 21:56
 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 gtx 1660 super 1-click oc [Wentylatory nie kręcą się, brak PWM]
  ASUS FX505 motherboard FX505GD audio not working ALC233  [SOLVED]
  Asus S46CA (K46CA) - wentylator FAN na pełnych obrotach  [SOLVED]
  Acer Predator PH315-54 / PH317-55 (LA-L191P) - Strange Fan Problem?  [SOLVED]
  Lenovo Slim 3 15ABR8 - oporność  [SOLVED]
Lenovo Slim 3 15ABR8 - nie uruchamia się

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.