Posibility to modify the current/voltage and frequency of logo toggling

Discussion in 'Razer' started by TheodoreT, Jul 2, 2020.

  1. TheodoreT

    TheodoreT Notebook Enthusiast

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    Hi Guys,

    I am facing the following issue with my 2019 OLED blade https://insider.razer.com/index.php?threads/do-you-guys-get-this-in-your-blades-as-well.55990/ I've got it in my initial purchase as well as in the replacement unit that they've sent me (after fighting with the razer support for 6 months, replacing the screen twice and sending the initial unit for repair 4 times). The point is that I have opened already another RMA for the replacement, it is almost 10 days now with total silence from their side so far though.

    As I see it, the nightmare is gonna go on with their support so I was thinking whether I could do anything by myself in order to solve it. My idea is if there is any way that I can modify the current that goes to logo LED or try to change the frequency that the logo toggles in "Breathing" mode (when mode is set to "Static" or "off").

    My guess is that the issue is due to bad grounding or something. The microphone and logo LED share the same cable going to the display from the motherboard, so it's possible there is a bad grounding of the LED backlight, causing some current to be dumped into your microphones signal wires (causing this high pitch noise). Thus, it might worth trying to see whether by changing the toggling frequency or the current/voltage that toggles the LED could help or not.

    So my question is how would be possible to do such a thing if anyone has any idea.

    Thanks.
     
  2. senso

    senso Notebook Deity

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    No easy solution, just turn it off..
    Its a PWM signal generated most likely by the EC, you might try you luck with RW-Everything but doubt that the PWM frequency is programmable/changeable at all.

    Maybe finding the traces and sticking a low pass filter on that signal, but you would need to cut the trace to add a resistor and then a cap to ground, and I would also thrown in a ferrite bead in line..
     
  3. TheodoreT

    TheodoreT Notebook Enthusiast

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    @senso thanks for the proposal to RW-Everything, I'll give it a try.

    I do not want to put hands on the cabling/connections, at least not for now, first I would like to check if software-wise would be possible to do anything and if this leads to a dead end then I might thing about it.
     

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