My Redmi AX6 is currently unable to broadcast 5,8 GHz signal, probably because of R324 is cooked after some water damage or maybe overheating, can anyone help me identify what is the value of said resistor? It is just above the shielding of the 5G module, in the area below the power socket.
Thanks in advance.
So, I figured it all out, by finding another router with identical circuit on xiaomi ax3600 (this one is having really weak signal, but the voltages are good, maybe the rf amplifier?)
R324 supposed value is 0 ohm. So, I tried jumping it up with a wire. But still no dice. So maybe the black rectangle thingy is also dead, but what is it? the marking on ax3600 is only "2". I search around, maybe Toshiba TCR3UG?
Anyway, I mapped the reference voltages from ax3600, and come up with this
Soldered some dc-dc converter, and it's coming back to live:
Highly doubtful - a resistor with no resistance.
Maybe an ohmmeter?
You do realize that there is 0 ohm "resistor", right? Maybe used to jump traces, or a makeshift fuse.
I do test the burnt one with multimeter, it measures in mega ohms, while the normal one in ax3600 is 0.006 ohm, that's the value of my multimeter tips with no resistor connected to, so 0.006 - 0.006 = 0 ohm.
Ummmmm, OK.
Yes, but seems (seemed) unlikely for an OEM to expense to add it...
...unless opening it serves a [likely regulatory] purpose.
Perhaps.
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