820-2936-B One USB port not working

Cire3

Member
820-2936-B One USB port not working , was two but after a ultrasonic cleaning one has been regained. No signs of liquid damage, but had some crusty spots on the board, Both USB had 5V at the connection however would not read data.

After it's bath, one USB (Closest to the user) started working. But the rear one did not change.

Any direction I sould be going ?
 

Cire3

Member
Ok, working with connector J4610 (USB that has power but no data)

J4610

Grounds on pins 4,5,6,7,8 are good.
Pin 1 @ 5V

Pin 2 is connected to L4610 Pin 3 & Pins 5 & 2 on D4610
Pin 3 is connected to Pins 3-4 on D4610 & Pin 2 of L4610

L4615 @ 0.2 Ohms

L4610 Pins 1 & 2 OPEN
L4610 Pins 3 & 4 @ Jumping 40-80 Ohms

Same coil on J4600 pins 1&2 3&4 Ohm @ 1.6

I can assume I need to replace L4610 ?

And where would I find these coils to purchase?

Thanks in advance !
 
Last edited:

2informaticos

Administrator
Staff member
You can connect corresponding pads directly.
Use very tiny enameled wire, like 0.03-0.05mm.
Be sure no short on any pad before...
 

JohnB8812

New member
Start by replacing L4600/5/10/15. Sometimes those filters fail for no reason and will cause one port to not work.
 

Cire3

Member
Any way to find what other boards are compatible for parts ? Cheat sheet somewhere ? Sorry, lots of questions....lol
 

2informaticos

Administrator
Staff member
"Use very tiny enameled wire, like 0.03-0.05mm."
You can use even 0.1mm wire.
Why insist so much to get original coils?
These are not critical...
 
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