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New tool to find short capacitors on motherboards : shorty with display

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    #31
    Re: New tool to find short capacitors on motherboards : shorty with display

    it is a standard 0.91" oled module, in a 128x32 resolution. plenty of them on ebay or ali

    there will be a button on the pcb page to buy it, but please wait 1-2 months before it's available.
    I must first make one, buy one, receive it and test it, and then only they will be available.
    Last edited by kripton2035; 03-02-2021, 11:27 AM.

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      #32
      Re: New tool to find short capacitors on motherboards : shorty with display

      Thanks Kripton

      Something like this one
      https://www.aliexpress.com/item/1005...archweb201603_

      I may as well order the parts I don't already have here, then everything will be ready

      best regards
      Follow me on YouTube
      ------------------
      Learn Electronics Repair
      https://www.youtube.com/channel/UCFX...R8UZ2vg/videos

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        #33
        Re: New tool to find short capacitors on motherboards : shorty with display

        those are cheap!!
        last time i got some they cost 1.60 in 5's

        Comment


          #34
          Re: New tool to find short capacitors on motherboards : shorty with display

          Originally posted by dicky96 View Post
          Yes these are ok. anyway there are constants at the beginning of the source code to tell the resolution of the oled, easy to change it if needed.

          Comment


            #35
            Re: New tool to find short capacitors on motherboards : shorty with display

            Originally posted by stj View Post
            those are cheap!!
            last time i got some they cost 1.60 in 5's
            Yes, but if you add the Shipping cost US $1.35 (max. 2 pieces) that will end up the same price.
            Unless you buy enough pieces to cover shipping cost (Shipping US $3.58 for 3 or more pieces).
            My opinion FWIW

            Comment


              #36
              Re: New tool to find short capacitors on motherboards : shorty with display

              Originally posted by kripton2035 View Post
              I've published the first draft of schematic and source code of the project. enjoy !
              http://kripton2035.free.fr/Projects/shorty-display.html
              I would also be interested in buying a couple of these boards if and when you have them available
              9 PC LCD Monitor
              6 LCD Flat Screen TV
              30 Desk Top Switching Power Supply
              10 Battery Charger Switching Power Supply for Power Tool
              6 18v Lithium Battery Power Boards for Tool Battery Packs
              1 XBox 360 Switching Power Supply and M Board
              25 Servo Drives 220/460 3 Phase
              6 De-soldering Station Switching Power Supply 1 Power Supply
              1 Dell Mother Board
              15 Computer Power Supply
              1 HP Printer Supply & Control Board * lighting finished it *


              These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

              1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
              2 Hem Saw Computer Stack Board

              All of these had CAPs POOF
              All of the mosfet that are taken out by bad caps

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                #37
                Re: New tool to find short capacitors on motherboards : shorty with display

                I'm making the pcb right now, then I'll have them made, then test them and if ok there will be a button to order them on the pcb tab of the web page.
                but I need 1-2 months before it's available.

                Comment


                  #38
                  Re: New tool to find short capacitors on motherboards : shorty with display

                  Originally posted by megaraider View Post
                  Yes, but if you add the Shipping cost US $1.35 (max. 2 pieces) that will end up the same price.
                  Unless you buy enough pieces to cover shipping cost (Shipping US $3.58 for 3 or more pieces).
                  My opinion FWIW
                  i got 10 last time.
                  they are used on gotek floppy-simulators.

                  Comment


                    #39
                    Re: New tool to find short capacitors on motherboards : shorty with display

                    Really nice. How bad is shipping from france? It's unfortunate that shipping to the US from china approaches free, everywhere else it's a make you cry price.

                    Comment


                      #40
                      Re: New tool to find short capacitors on motherboards : shorty with display

                      it seems I will be able to ship a letter with a pcb inside for EUR 5 all around the world without tracking, and 8-9 EUR with tracking. more expensive than china of course but still reasonable.

                      Comment


                        #41
                        Re: New tool to find short capacitors on motherboards : shorty with display

                        I'm still interested at that price
                        Follow me on YouTube
                        ------------------
                        Learn Electronics Repair
                        https://www.youtube.com/channel/UCFX...R8UZ2vg/videos

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                          #42
                          Re: New tool to find short capacitors on motherboards : shorty with display

                          sounds good - i may need a few.

                          Comment


                            #43
                            Re: New tool to find short capacitors on motherboards : shorty with display

                            Originally posted by kripton2035 View Post
                            it seems I will be able to ship a letter with a pcb inside for EUR 5 all around the world without tracking, and 8-9 EUR with tracking. more expensive than china of course but still reasonable.
                            That's not bad at all. Last I checked it was a lot more.

                            BTW, will you (or can you) post a STEP file from that render you made? I could get working on designing a 3d-printed enclosure. In regards to an enclosure, some mounting holes would be nice, looks like the board is already going to be drilled for the DIN, though I don't know if that requires a bit change and will increase the BOM. Might be nice to have the USB port on the nano closer to the edge for easier access, but I don't know if you have traces running on that side of the board. Unbolting the case to upgrade also isn't that terrible of an outcome. + and - would also be nice on the silkscreen for the 9v connector.

                            The other thing I'm thinking of is how best to mount the LCD, it sits back a bit on the board in relation to the other components, but it could be attached with ribbon cable and mounted off the board.

                            Can't wait for this, it's a tremendous innovation. Interested bare pcb or populated.

                            Here's two of my designs
                            https://www.thingiverse.com/thing:4126979
                            Note on this one how I thinned out the wall to allow USB access.
                            https://www.thingiverse.com/thing:4249306

                            I don't know if this tool would be best standing up or laying down (like your case) on the bench though. What do you think is an ideal probe cord length, the shorter the better? Is there an advantage to being able to put the device next to the work?

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                              #44
                              Re: New tool to find short capacitors on motherboards : shorty with display

                              the pcb is not final in size... I'm thinking of adding one pad with a 1Ω resistor to calibrate easily. but it will be defined soon. yes the oled seems difficult to put nicely into a case. I've never seen a 0.91" oled nicely fitting in a case ! that's why I am now not focusing at all on a 3d printed case. I would leave the pcb alone.
                              Last edited by kripton2035; 03-05-2021, 12:15 PM.

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                                #45
                                Re: New tool to find short capacitors on motherboards : shorty with display

                                Originally posted by kripton2035 View Post
                                I've never seen a 0.91" oled nicely fitting in a case
                                Challenge accepted.

                                But yeah, it's major for you just to put out the hardware, leave the cases to others.

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