Trouble: PCB Through-hole 3.5mm 4 pin Audio Jack -- Please Help... - Page 1
Forum section: electronics / beginners

author: benjzet
author_rank: Contributor
timestamp: April 08, 2015, 05:19:15 am
content: Hey All,Not 100% if the right forum...Since my last foray into electronics re: monitor, I have started an electronics course (part time, 18 months)... But I am really stumped now...I have a dead-line to get a particular item fixed by this week Friday, the replacement parts I have found will take 7-10 business days to arrive, well outside of the dead-line, so I came up with a silly idea...This is the original part:http://www.ebay.com/itm/20pcs-3-5mm-Female-5-Pins-Stereo-Headset-Interior-PCB-Mount-Audio-Jack-Socket-/261486106917So the deal,I have a -- 3.5mm female 4 pin pcb through hole audio jack -- that died, I need to replace with same, however I cannot get same within Victoria Australia that I have found. So I went to Jaycar, Altronics & RS Components and came up with this nifty product:http://au.rs-online.com/web/p/jack-trs-connectors/0476328/Now it doesn't match my pcb as seen in the photo's attached.I was thinking of using hot-glue or a similar product, stick it upside down and use wiring to make the connection from pin to hole.So, this is where I am stumped, I am researching the pcb and unsure as to which hole affects what function, equally true of the device I have found... Therefore I am wondering if someone clever could help me out with some advice as to where to look or a schematic/diagram for my pcb etc...If you want to give the answer direct, YaY, but I would like to do some reading and research myself, after all that is how we grow in knowledge 100%.Please help me out by sorting out my dilemma.Thank You EEVBlog Peoples,- Benjamin

author: apelly
author_rank: Unknown
timestamp: April 08, 2015, 05:41:17 am
content: Well, two of the pads are clearly labeled left and right, the center hole is probably ground; it does connect to the ground plane on the PCB.

author: benjzet
author_rank: Contributor
timestamp: April 08, 2015, 05:58:14 am
content: Awesome,It may seem silly, or a bad case of 'man blindness' but I didn't notice that until you just pointed it out...So I wire L to L Audio & R to R Audio...The remain two holes, does it matter too much?That is 'Holes 2/4 & 1/3' or would there be a sequence to follow?

author: apelly
author_rank: Unknown
timestamp: April 08, 2015, 06:00:36 am
content: Those other two holes appear to be electrically unconnected. They may have originally been for mechanical support.

author: benjzet
author_rank: Contributor
timestamp: April 08, 2015, 06:13:02 am
content: Awesome,So as long as I have a two pin L/R and solder it to L/R respectively, it should work beautifully?.

author: Asim
author_rank: Regular Contributor
timestamp: April 08, 2015, 06:16:20 am
content: Don't forget the ground

author: benjzet
author_rank: Contributor
timestamp: April 08, 2015, 06:21:20 am
content: Okay,I think I have this understood and sorted now...I found this at my local JayCar:http://www.jaycar.com.au/Interconnect/Plugs%2C-Sockets-%26-Adaptors/Phono/3-5mm-ENCLOSED-Socket/p/PS0122It's got L/R at the rear and I believe it has a Ground in the front. Would I be correct in thinking this?Thank You,

author: benjzet
author_rank: Contributor
timestamp: April 10, 2015, 07:36:12 am
content: Hey All,Just want to say a huge Thank You,They have been tested and are working beautifully. Right on Schedule for tonight's festivities.Thank You Again,