Society of Robots - Robot Forum
Electronics => Electronics => Topic started by: Conscripted on February 18, 2011, 07:35:03 AM
-
Good morning all. I had a friend bring me a broken laptop yesterday. The only description I got was that you needed to open and close the lid a few dozen times before the screen would come on.
I tore the thing apart and found a wire pulled from a small connector. It's got 4 pins. I thought it was a JST connector like THIS (http://www.sparkfun.com/products/9916) one. It isn't. That connector is to big by about a third. I would like to order a replacement connector to fix this computer but I'm not sure what I should be looking for.
Conscripted
-
Wow, good luck with this one. There are thousands of connectors out there. Just to start you off, I'd recommend a website like digikey. What you showed kind of looks like something I've used a lot in the past:
http://search.digikey.com/scripts/DkSearch/dksus.dll?vendor=0&keywords=+51021-040 (http://search.digikey.com/scripts/DkSearch/dksus.dll?vendor=0&keywords=+51021-040)
If it's not that, you can take a look at the catalog pages for visual matches
http://onlinecatalog.digikey.com/WebProject.asp?CodeId=7.4.4.17&pagelabel=154# (http://onlinecatalog.digikey.com/WebProject.asp?CodeId=7.4.4.17&pagelabel=154#)
Taking a picture to post would help as well.
-J
-
Hi,
That connector is to big by about a third. I would like to order a replacement connector to fix this computer but I'm not sure what I should be looking for.
2mm pitch x 2/3 = 1.33mm
0.05" = 1.27mm
Sounds like you need a 0.05" pitch connector.
Break out your caliper and get the exact pitch before ordering anything, there's a lot of different connectors very close in pitch , but not interchangeable.
(Or just solder the wire, what are the chances he'll ever need to break it apart).
-
Hi,
That connector is to big by about a third. I would like to order a replacement connector to fix this computer but I'm not sure what I should be looking for.
2mm pitch x 2/3 = 1.33mm
0.05" = 1.27mm
Sounds like you need a 0.05" pitch connector.
Break out your caliper and get the exact pitch before ordering anything, there's a lot of different connectors very close in pitch , but not interchangeable.
(Or just solder the wire, what are the chances he'll ever need to break it apart).
Everyone needs a good caliper. Any suggestions on brand/model, digital/needle, etc..?
Im looking for one that can measure in different ways. Most calipers close. I want one that closes and expands, so for example I could measure the diameter on the inside of a hollow cylinder and the outside diameter of a cylinder.
Also, Id like one with bent arms, so it could measure depth of gouges in materials. Most calipers Ive seen are straight.
Sugestions?
-
Also, Id like one with bent arms, so it could measure depth of gouges in materials. Most calipers Ive seen are straight.
Sugestions?
Suggestion #1
Start a new tread when going off topic.
Suggestion #2
Only quote what's relevant for your question.
Suggestion #3
Go to your nearest tool shop and have a look.
Most Vernier calipers worth their salt measures outside (1) and inside (2) as well as depth (3).
(http://upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Vernier_caliper.svg/400px-Vernier_caliper.svg.png)
If you want a good quality Vernier caliper, be prepared to pay more than you would for its digital equal. If you want one with an analog dial, bring even more money.
If you plan to settle with just one, a digital model is the way to go IMO. On even the cheapest, you can zero the display at any measure and then use it to measure diverging sizes - impossible with a Vernier scale and so is reading it in low light.
The only Vernier style caliper I've ever seen with curved jaws, is a very old model I inherited from a watch maker in the family two generations back.
Inherited one of these as well
(http://upload.wikimedia.org/wikipedia/commons/thumb/7/73/Calibro_archetto_graduato.JPG/220px-Calibro_archetto_graduato.JPG)
(Good for up to 10mm).
Or perhaps you are thinking of these:
(http://upload.wikimedia.org/wikipedia/commons/thumb/7/71/OutsideCalipers.jpg/220px-OutsideCalipers.jpg)
(http://upload.wikimedia.org/wikipedia/commons/thumb/c/c3/InsideCalipers.jpg/220px-InsideCalipers.jpg)
Which is used a lot in some art and copying
I've got a couple of those too, but never really liked them (except for lathe work), as you cannot get the measure immediately and so, cannot measure eg. a recess as you need to open it to remove it.