SMTnet.com Electronics Manufacturing Forum http://www.smtnet.com/Forums/ Printed circuit board assembly, surface mount technology and electronics manufacturing forum discussions from SMTnet.com. Mon, 26 Sep 2016 05:33:40 GMT User / Service Manuals for Yamaha YV100-2 and YVL88? http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19064 Im looking for manuals for theYV100-2 and YVL88 machines, as i have just bought a 2nd land line at auction. Does anyone have one, or know where i can get one from? Sun, 25 Sep 2016 14:26:41 GMT Smt Surface mount technology http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19058 Hi I would like to know the process in wich the Quad 4C knows it has the correct component after taking it from the feeder. Recently I've been put in charge of a Quad 4C machine that is used to assemble two different boards. Each one has already a program sequence, everyday, depending on the board that we are manufacturing I simply download the correct program to the assembler. Lately I've noticed that with some components, the assembler discards them just right after taking them from the feeder. I have read something in the manual about tolerances, but where can I check these values that the machine has in each program? Thank you so much. Thu, 22 Sep 2016 13:25:34 GMT Thick Film Screen Printer http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=18933 Can we use SMD Machines for printing inks on flexible PCB? (There is a FPC with four layer printed ink) I attached a picture of my board. Wed, 21 Sep 2016 16:29:00 GMT Best method for BGA removal after urethane conformal coating application. http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19057 We are looking for advice on removal of BGA components once urethane conformal coating has been applied and cured. Wed, 21 Sep 2016 09:07:49 GMT MPM Up2000 and SMEMA http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19043 Our MPM Up2000 HIE is having a communication problem with any upstream machine we place in front of it...i.e. conveyor, board loader, etc. It all started when we removed a conveyor from inbetween it and a board loader, and hooked those machines up directly to each other. I can see the board loader in the MPM's I/O, and a signal IS definitely sent when the printer is ready for a board (the upstream board loader's PLC will light briefly, and the relay will close, but it is a very brief pulse of a signal...only long enough to move the upstream board loader's conveyor a couple millimeters). The MPM machine's board-stop/machine-busy sensor mounted on it's camera also appears to work fine in the I/O. Ive placed multiple machines in front of the printer (including the original conveyor), and all have the same result...the printer will see them, and will send a signal, but it is more of a pulse and the board will only slightly move. Ive tried different cables, traced all connections inside the printer and upstream machines, and I still can't get it to transfer the board. Any ideas? Im fresh out. Many thanks. Tue, 20 Sep 2016 15:00:26 GMT Melted BGA part http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19048 While removing one part, another part - BGA part - several components away, actually melted on one corner - you can see the plastic body of the part oozing out around one corner between the solder balls. Several of the solder balls on the one corner bridged together also. This was a part closer to the edge of the CCA (there was a smaller part closer to the edge) and the melting old occurred on the one corner. I am worried about removing this part. Will the plastic adhere to the pads and cause lifted pads or other damage? Leaded part to the temp never reached above 250 deg C. Tue, 20 Sep 2016 13:36:47 GMT Bubbles formation in conformal coating http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19056 Hi, Currently we are facing bubble formation in conformal coatings in the pcba. Have varied various specs of the conformal coating machine, even during manual application also having the same issue. the material used is silicone conformal coating. Need possible suggestions to overcome this problem. Thankyou Tue, 20 Sep 2016 09:07:23 GMT Obsolete parts - what to do? http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19047 Hi there, we accumulated over the years quite a lot electronic components (R, C, IC etc.) and some populated modules. What is a good what to get offers for them? We tried ebay, but that works too slow. Some we like to sell in roughly sorted bulk, but some are in excellent shape, sealed rolls etc. Suggestions are very welcome! Tue, 20 Sep 2016 03:04:11 GMT Nutek NYM0210PL Manual / Electrical drawings http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19055 Hey folks, I'm trying to resurrect a Nutek bare board loader but don't have any manuals or drawings and wondered if anyone could help out with some. thanks J Mon, 19 Sep 2016 23:45:35 GMT Solder balling under passives http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19054 Hi guys, Problem: Mid chip solder balling. Component affected: 0603 caps only Defect is PCB specific (Meaning only one PCB is affected as the aperture is standard for that component). As a containment I'll give a home plate design for the component but by standard we don't use home plate designs for 0603. I'm seeing mid chip solder ball only at the location where there is a trace beneath the mask. Any advice or suggestion for this peculiar case? Thanks Mon, 19 Sep 2016 21:35:54 GMT Grid-Lok Leaking http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19044 Well I've tried to get in touch with Ovation for weeks now without luck, so maybe someone here will have the answers I'm looking for. One of our Grid-Lok Gold modules is leaking air from the sides (it pushes the pins up fine, but when air is applied to the pistons to hold the pins up it's leaking and the pins are just falling down). I took the black covers that are shown in the attached image but only found some strange rubber pieces and pistons behind the pins. Does anyone happen to know the fix for this? Can we purchase some sort of rebuild kit? I don't see any obvious gaskets anywhere. Any help is appreciated. Thanks! Mon, 19 Sep 2016 10:24:00 GMT VJ Elektronix Obsolete Equipment Service Tech Needed http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19053 Does anyone know of someone (like a previous employee) who can service VJ X-Ry systems? Fri, 16 Sep 2016 16:58:06 GMT BSDL file of PCI9030 http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19052 Fri, 16 Sep 2016 07:37:22 GMT DUT pad wearing out http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19051 Guys, i hope you can help me in finding the reason why DUT pad like the photo attached had wearing out. Highlighted in RED is the wearing out issue. Thank you so much Thu, 15 Sep 2016 20:44:09 GMT Assembleon Eclipse II Calibration problem Z http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19050 Hello, i have a problem with the Calibaration of my Assembleon Eclipse II. There is a problem with the down Z Position of Head 2. They are 2mm deeper as Head1 by picking up any Componend. Laser High are OK. How Can i setup the Head down High. Thu, 15 Sep 2016 16:40:55 GMT static shielding bubble bags shipping damage http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19049 Has anybody else had issues with shipping circuit boards in static shield bubble bags? It appears that parts are getting ripped off during shipping. I suspect that they're getting caught in the bubbles when the boards shift in the bags as the boxes are jostled around. It may also be as the boards are being inserted or removed from the bags. Just wondered if anyone else has experienced anything like this. Thu, 15 Sep 2016 15:27:50 GMT Ekra E4 stencil wipe problem http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19036 Hello, we have an Ekra E4 that we bought used and the stencil wipe never worked. We found that the air tubing for the up (black)& down (blue) of the wipe roll is missing. There are 2 push connectors for up and 2 for down to receive the tubes. Does anyone ave a picture or diagram of which is which? See attached file. There are also 2 large and one small black air tubes. Again does anyone have a picture or diagram? Thanks in advance for your help. Thu, 15 Sep 2016 11:50:30 GMT Who has used ICAPE HK as a bare pcb supplier? http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=18940 I'm am curious if anyone here has any experience with ICAPE? Also who are the top companies in china that supply PCB's? Thu, 15 Sep 2016 10:55:40 GMT Humidity and temperature http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19045 We are enclosing our SMT room and will control the Humidity and Temperature of the room. Is there a standard for humidity and temperature for a SMT room and if so what is it. What is protocol if it goes out of tolerance? Do we stop production? Is the product deemed scrap? I have to set up a reaction plan if it does. Thu, 15 Sep 2016 10:52:09 GMT Obsolete parts and boards - what you do with it? http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19046 Wed, 14 Sep 2016 23:02:21 GMT Online Label printing & placement http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19034 Hi there, I'm looking to add automatic label application to my SMT line and I'm looking for people's feedback on what options they have tried and what has worked well for them. The volume isn't hugely high but I need the label to be consistent and on't really want to pay someone to place 5000 labels at a time! Thanks Wed, 14 Sep 2016 15:46:41 GMT aasasas http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19042 Sun, 11 Sep 2016 08:48:24 GMT aasasas http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19041 Sun, 11 Sep 2016 08:47:11 GMT aasasas http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=19040 Sun, 11 Sep 2016 08:46:23 GMT Tin Lead Silver BGAs http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=18718 Hello SMTnet team, I have read before that silver content on solder joints is ok at around 2% total silver content. Does anyone has experience using SN62/PB36/AG2 BGAs on hard gold (10 micro inches) PCB surface finish? Any drawbacks? Thanks Joel Fri, 09 Sep 2016 06:13:47 GMT