I had already disassembled my new AOC Agon AG353UCG monitor the other day in search of the cause of the unpleasant background noise, where I then encountered the G-Sync Ultimate module with its massive heat sink. Since running it passively without a fan caused it to overheat and shut down, modifying the cooling solution is on the agenda today so that it hopefully quiets down and no longer bothers my ears at work and while gaming.
Disclaimer: I would like to state that I am not a trained electrical engineer and we do not make any recommendation for imitation of this mod. In addition, such interventions, as we will show in a moment, will of course void the warranty of the monitor. This article is therefore only to be understood as a practical experience report and at most as inspiration.
First, let’s look again at the initial situation. The cooler uses 5 copper heatpipes to conduct heat to a second set of cooling fins. There a 70mm radial fan from WHEE provides the necessary air flow, but blowing from top to bottom, against the natural convection. The pinout of the fan connector looks like PWM, but it is not controlled depending on the temperature and there is no audible change of the speed during operation.
Originally I just wanted to replace it with another radial fan or at least reuse the connector on the board, possibly with a resistor in the cable for throttling. But since there is not much choice in 70 x 10 mm fans and the connector with 1.25 mm pin pitch could not be found after hours of searching on Aliexpress, I had to find another way relatively quickly.
I then came across this Reddit post by user er0s3nnin_, who had a very similar problem with his Asus G-Sync display. Instead of just replacing the fan, he has also integrated an extra fan controller with temperature sensors into his display so that he can control the fan speed and noise himself depending on the temperature.
I liked this approach and the small controller board with its 3-digit digital display made a promising impression. I decided to use the same controller, because the display was important to me for control and with this model also the fan curve can be adjusted relatively granular. And if a single quiet first set fan doesn’t provide enough cooling power, I could run a second one with it later. The Molex adapter for 12 V you can see here I built myself quickly with my spare crimping supplies for a test run.
9 Antworten
Kommentar
Lade neue Kommentare
Urgestein
Urgestein
Urgestein
Veteran
Mitglied
Veteran
Urgestein
Veteran
Alle Kommentare lesen unter igor´sLAB Community →