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    Identifying a Power Switch and Function

    Hi Guys, I'm looking to get a Lenovo IdeaCentre A310 back up and running which has got problems with the power switch. It's a 6 pin switch which I am unfamiliar with. Only ever seen 2 pin ones and 4 pins ones before.

    So I assume with this switch two pins will be for LED, Power Switch, Reset switch?

    What I plan to do is short two of the pins with a bit of cable to see if I can get the board to jump start.

    I am assuming the 2 central pins running through the yellow bit are for the LED?

    Which ones will be for the power switch and does anyone know where to find a replacement?

    Attached Files

    #2
    Re: Identifying a Power Switch and Function

    I suppose you could test how the switch operates by putting your meter in ohms across the joints ( without the power on) If the switch works.
    Please upload pictures using attachment function when ask for help on the repair
    http://www.badcaps.net/forum/showthread.php?t=39740

    Comment


      #3
      Re: Identifying a Power Switch and Function

      Switch is dead, the clicky bit has disintegrated.

      I was hoping I could just replace with a simpler on / off switch, perhaps with reset. LED/Reset are not exactly crucial.

      Comment


        #4
        Re: Identifying a Power Switch and Function

        I cant tell - is it a slide switch or a press down switch - wouldnt have thought you could
        have two operations on a press switch is it not just an off/on with a led?
        Please upload pictures using attachment function when ask for help on the repair
        http://www.badcaps.net/forum/showthread.php?t=39740

        Comment


          #5
          Re: Identifying a Power Switch and Function

          Press down

          Perhaps it is just on/off and led, I was just guessing there was perhaps a reset function due to number of pins.

          Comment


            #6
            Re: Identifying a Power Switch and Function

            SW1 and Triangle pins / positive?

            or

            triangle pin and opposite (L3) pin / positive?

            Comment


              #7
              Re: Identifying a Power Switch and Function

              jump across the top pair of pins.
              it's just a 4pin push switch with an led inlaid over the button.

              Comment


                #8
                Re: Identifying a Power Switch and Function

                It looks like momentary switch with LED. The typical set up is the top right pin with an arrow is internally connected to the bottom right pin, the top left is also internally connected to the bottom left pin. When the button is push, the electrical contact will be made between the top/bottom left side terminals to the right top/bottom right side terminals.
                Never stop learning
                Basic LCD TV and Monitor troubleshooting guides.
                http://www.badcaps.net/forum/showthr...956#post305956

                Voltage Regulator (LDO) testing:
                http://www.badcaps.net/forum/showthr...999#post300999

                Inverter testing using old CFL:
                http://www.badcaps.net/forum/showthr...er+testing+cfl

                Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                http://s807.photobucket.com/user/budm/library/

                TV Factory reset codes listing:
                http://www.badcaps.net/forum/showthread.php?t=24809

                Comment


                  #9
                  Re: Identifying a Power Switch and Function

                  Cheers so to jump I need to make contact with SW1 pin and the Triangle pin

                  Do you know of any momentary switch with a LED I could use?

                  If not a normal 4 pin momentary switch will suffice.

                  Comment


                    #10
                    Re: Identifying a Power Switch and Function

                    http://www.rapidonline.com/electroni...with-led-71701

                    looks pretty close.

                    Comment


                      #11
                      Re: Identifying a Power Switch and Function

                      Wow thanks, spent a good few hours yesterday trying to find something similar to no avail.

                      Only difference being the one on the board is a SMD

                      Wish I had discovered this forum earlier!

                      Comment


                        #12
                        Re: Identifying a Power Switch and Function

                        http://www.aliexpress.com/item/Up-to...937973285.html

                        Comment


                          #13
                          Re: Identifying a Power Switch and Function

                          And it lives!!

                          Thanks guys, as above were the correct pins to jump, thanks. Have been waiting on the PSU which was delivered today, so tried the jump and booted up fine.

                          Going to go with the non SMD variant as can pick up from local farnels for £0.50p and just cut and bend the pins back. Will that be ok?

                          Cuople of other things I need to work on as well which I will report on once I have placed the new switch (cracked PCB for Bluetooth button only, just a single trace)
                          Last edited by mikay786; 08-28-2014, 05:24 AM.

                          Comment


                            #14
                            Re: Identifying a Power Switch and Function

                            remove the switch frmo another scrap board , they have a lot to use , and they saved me a lot

                            Comment


                              #15
                              Re: Identifying a Power Switch and Function

                              Originally posted by mikay786 View Post

                              Going to go with the non SMD variant as can pick up from local farnels for £0.50p and just cut and bend the pins back. Will that be ok?
                              I would have thought so if you can get them to the same position as the pads

                              Was/is the old one glued to te board for stability
                              Please upload pictures using attachment function when ask for help on the repair
                              http://www.badcaps.net/forum/showthread.php?t=39740

                              Comment


                                #16
                                Re: Identifying a Power Switch and Function

                                No had like plastic locating pin underneath

                                I think I found something similar that is surface mounted from farnells. What you think, will it do

                                http://uk.farnell.com/e-switch/tl324...vdc/dp/2115628

                                compared to the through hole

                                http://uk.farnell.com/multicomp/tll-...led/dp/9472010 -

                                Comment


                                  #17
                                  Re: Identifying a Power Switch and Function

                                  Personally I would try the 50p one (tight - born in Yorkshire!!) have you looked at the data sheets for the placing of the pins.on both and does the height matter. Also is it just a low voltage switch - not mains.
                                  Please upload pictures using attachment function when ask for help on the repair
                                  http://www.badcaps.net/forum/showthread.php?t=39740

                                  Comment


                                    #18
                                    Re: Identifying a Power Switch and Function

                                    bend the pins,
                                    the smd one will hit you for £15 delivery from the u.s.!!!

                                    Comment


                                      #19
                                      Re: Identifying a Power Switch and Function

                                      Originally posted by selldoor View Post
                                      Personally I would try the 50p one (tight - born in Yorkshire!!) have you looked at the data sheets for the placing of the pins.on both and does the height matter. Also is it just a low voltage switch - not mains.
                                      Yorkshireman here too so went el cheapo for the 50p ones Bought a few just in case I screwed up which was a likelihood

                                      Originally posted by stj View Post
                                      bend the pins,
                                      the smd one will hit you for £15 delivery from the u.s.!!!
                                      Indeed, when she told me they had to me shipped over from US, no thanks love!!

                                      Updates to follow
                                      Last edited by mikay786; 08-28-2014, 10:16 AM.

                                      Comment


                                        #20
                                        Re: Identifying a Power Switch and Function

                                        Feeeew I nearly went and ****** it up!

                                        I should have pointed out this was my first time working on a board and properly with a soldering iron, have done a little soldering before just joining wires etc. Have got a desoldering gun which is brilliant for through hole stuff but this was a surface mounted switch.

                                        So what did the noob do



                                        Along with melting some plastic bits he pulled a pad up!!!

                                        But thank god it seems it wasn't crucial to the switch working, and here my finished job



                                        Yay, well the LED doesn't work, perhaps its linked to the pad I ripped up but the switch, on/off does work perfectly YAAAY

                                        Might pop some glue around the switch to make sure it is sturdy?

                                        I could of gotten my brother in law to do it but where's the fun in that feels so good knowing you have brought back something to life
                                        Attached Files
                                        Last edited by mikay786; 08-28-2014, 10:17 AM.

                                        Comment

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