wrote:
On Feb 25, 10:41 pm, wrote:
On Feb 25, 10:34 pm, jakdedert wrote:





wrote:
I have a Dell inspiron E1405 and the headphone jack was broken off the
motherboard. I either need to get a replacement jack or figure out
what solder points to jump in order to get the speakers to work. Here
is a picture of the motherboard and the solder points.
http://i35.photobucket.com/albums/d1...eadphone002_re...
Does anyone know what solder points to connect in order to get the
speakers to work on the computer. Or does anyone know where to get a
replacement jack?
Thanks!
D
If there's anything left of the old jack, you should be able to trace it
out with a mini-TRS plug and a meter. If not, it should be available on
eBay...or a dead mb. I expect every Dell is pretty much the same,
though. I wish I'd seen this yesterday when I had my D400 apart for
speaker replacement.
Carefully probing the connections--if you can run the computer
disassembled--with a probe made from a set of headphones might tell you
which are the input pads. That would be three out of (what should be)
five: L-in, R-in, L-out, R-out & common. If you can get to the leads on
the speakers, you should be able to check continuity to there to find
which pads are the L-out & R-out and common....
Finally, a lot of Dell manuals are available on the web. Try to
download one...any one, as per the above (identical parts).
jak- Hide quoted text -
- Show quoted text -
grounds being 1 6 7 8

#3 appears to be a dead end trace, I turned the motherboard over and
there is no trace leading away from it on either side of the board.

So that leaves us with 2, 4, and 5 with traces leading away from
them.
#4 has trace leading away on both sides of the board.

Hope this helps.

D- Hide quoted text -

- Show quoted text -

Yes I can get to the leads on the speaker. There are four of them two
for the right and two for the left. I tried a staight continuity test
it gave me a stange reading not a 000 reading of continuity.

You'll have two leads on each speaker. One of each is probably common.
The other two (red on my D400, but it only has one speaker) should
connect to the jack.

If it's not a low resistance, then possibly the switch on the jack
doesn't directly interrupt the signal to the speakers, but switches the
speakers off electronically.

I'd be surprised if that's the case, perhaps someone else might know.

Do you not have the original jack? Easiest would be to check it for
pinout--even if it's mangled. Personally, I'd not want to put it back
together without it...too much trouble to disassemble if you want to fix
it in the future. Jacks are available....

jak