N56vz Subwoofer Jack Broken

Hello Guys,
I'm using asus 56vz-s4400d and my subwoofer's cable's jack is broken. Any tips how can i fix it? I bought 2.5mm jack but not sure which cable goes where.
I also tested with an voltmeter so no problem at subwoofer itself.

a Video would be nice

 

I have the same problem, someone snapped mine whilst it was plugged in, I managed to removed the snapped jack, and unsolder the original wiring and refit a new wire with plug, but I have no idea what way round they are meant to be..

we really need a layout of the 4 jack terminals and what they are!

my sub has been broken for over a year now like the OP so I would very much appreciate it!

 

If anyone with one of these subs could unscrew it open and test with a continuity tester on a multimeter that would be amazing!

 

I want to know how to fix this to.I looked all over the internet but i found nothing.At least now i know that i need to buy a 2,5 mm jack and hope that the guy from audio service knows what`s he doing.

 

You could send an email off to asus and ask, can't hurt.

 

Perhaps a pair for the signal (yellow/red) and a pair for the power (black/white)?

 

I can't find any obvious way to open the subwoofer without causing damage.
The real problem is that if the sub is amplified it's hard to do external measurements for reverse engineering the signals.

 

hey i bought a 2.5 mm jack with only 2 black rings but it doesn`t fit into the laptop,it is longer and thiner.The one with 3 rings fits correctly? becouse i don`t know exacly what type of jack is this and Asus said that they "don`t have the specification for this and also that this is unfixable and that my only option is to buy another subwoofer with 35 Euros price tag".Can anyone tell me the exact type of this jack,please?

 

It's a 3.5mm jack. The rings don't matter; they just denote the signals the plug is capable of. Two rings points to a stereo connection.

EDIT: I stand corrected; it's a 2.5 mm jack.

 

I just measured the jack on my subwoofer and it seems to be a standard 2.5 mm 4 pole jack. 11 mm length, 2.5 mm diameter of the "barrel" parts of the connectors however the tip seems to be a bit smaller than a plug I've compared to: 2.3 mm diameter v.s. 2.5 mm. That shouldn't make any difference though, the tip is always connected with a spring type contact in the jack.

 

You are in luck that I like hacking things I cut the wire and did some measurements:
TIP to BASE of plug: White - Red - Yellow - Black

Red is +5V, Black is ground. There is a 4 ohm resistance between white and yellow (tip and the ring closest to the base of the plug), don't know if it is polarized in some way or just the resistance of the speaker armature.

Speculation mode: If the sub wasn't amplified there is no reason to include a power feed. If it is amplified then the 4 ohm resistance is low given that opamps have very high input impedance. The most likely reason for this is that a 4 ohm resistor is connected in parallel with the opamp input in order to detect when the device is plugged in. Could be useful knowledge if one wants to connect a real powered subwoofer to their Asus computer ;P

(Now where did I put the heatshrink and my solder...)

 

Lol just don't fry the power delivery on the board.