Well i replaced both caps, and added a slim 40mm fan over the broadcom cpu on some ruber spacers and soldered it to the 12v input. No more high pitched noise, just the whir of the slim fan :) The cap i used for the 470uF was 2x to big, but i just installed it horizontal to the board with long leads (normally lead distance can screw up capacitors, but because this is just for filtering i figured i could get away with long leads. The Wire holes on this board were tiny :( took forever.
Mine just started making the high pitched noise about a month ago, I just ordered some 1000uf, 470uf and 220uf caps for a monitor power supply by coincidence ... lets see if i can up my order from digikey before it gets here..., Why are 470 and 220 so common with 12v filtering? and can i generally always upgrade the 470's to 1000uf's?
@epicenterprises1 The 220uF probably needs to be kept the same as it looks like it was part of the switchmode 12v -> 3.3v regulator on the board. The 470uF was just for power smoothing so the capacitance was not too critical. For power smoothing more capacitance won't hurt although you should check to make sure that you can still put it back together if you use a bigger capacitor.
Also thnanks from me, mine is fixed now too :) saved my a bit of money :)
nielselsen 1 month ago
Well i replaced both caps, and added a slim 40mm fan over the broadcom cpu on some ruber spacers and soldered it to the 12v input. No more high pitched noise, just the whir of the slim fan :) The cap i used for the 470uF was 2x to big, but i just installed it horizontal to the board with long leads (normally lead distance can screw up capacitors, but because this is just for filtering i figured i could get away with long leads. The Wire holes on this board were tiny :( took forever.
epicenterprises1 6 months ago
Mine just started making the high pitched noise about a month ago, I just ordered some 1000uf, 470uf and 220uf caps for a monitor power supply by coincidence ... lets see if i can up my order from digikey before it gets here..., Why are 470 and 220 so common with 12v filtering? and can i generally always upgrade the 470's to 1000uf's?
epicenterprises1 6 months ago
@epicenterprises1 The 220uF probably needs to be kept the same as it looks like it was part of the switchmode 12v -> 3.3v regulator on the board. The 470uF was just for power smoothing so the capacitance was not too critical. For power smoothing more capacitance won't hurt although you should check to make sure that you can still put it back together if you use a bigger capacitor.
008626 6 months ago
If it wasn't for this video I would have bought a new router instead of repairing it. So thank you for uploading this video! :D
ZilexuS 10 months ago
@ZilexuS glad it was helpful
008626 10 months ago