stencil cleaning

"stencil cleaning" search results in the Electronics Forums

9815 result s found for "stencil cleaning" in the Electronics Forums

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How Quad Align works (Quad IV-c machine)

Aug 4, 2019 | Hey bob, I had no luck. Even removing both glasses, cleaning that curved lenses with a cotton swab and isopropanol and blowing compressed air, the height still on 1. I will try on the next weekend again, to be sure, but my first guess is the QA unit. Other questions: 1) is there a separated

How Quad Align works (Quad IV-c machine)

Aug 2, 2019 | haha....thanks Steve!!! Nozzle Height of 1 means that you have dust or something in the quadalign lens. You need to clean the lens with alcohol then a dry lint free cloth and if it stays the same....that means the lens has an issue or there is dirt inside the quad align. Since the quad align

How Quad Align works (Quad IV-c machine)

Aug 2, 2019 | UPDATE: I was reading around about similar problems. My function #30 always return nozzle height 1. I tried to clean up the glasses and the internal laser lenses, no go, still at height 1. Even after removing both glasses, still at height 1. I saw some mod codes related to QA, but doesn't make a

Standarts/Guidelines for aviation electronic

Jul 14, 2019 | , vibrations, thermal shock and etc). So, i have no enough skills in this area. Can somebody give information (standarts, guidelinesabout, books, articles) about high performance electronic for aviation? Need understanding in PCB/PCBA production, SMT, THT, cleaning, repair. Thanks in advance.

Quad QSP-2 FeederBase calibration drifting

Jun 19, 2019 | Hi to everyone I hope someone can help me with a problem I have on a Quad QSP-2. when calibrating ( Or trying to use ) Feeder Bases 2 and 4 on gantry 2 Im getting small amounts of accumulative drift in the X axis. I have changed the servo amplifier, checked the belt for tension,cleaned all

Solder Balls and conformal coating

Apr 8, 2019 | We've never heard of seen of such a thing either. We tried a clean sample board and applied con coat. Same process through out and we saw nothing. After speaking with the original operators who was curing the boards he had left the boards much longer than required. So we experimented again and we

CP40lv resto project

Apr 8, 2019 | Hi all, Came across this machine that needs tlc. Hoping I can get it running smoothly. Will take any advice I can get. Seems like the only thing it needs is a thorough cleaning to run ok, and then a few parts to get it placing fine pitch qfp's and small passives. It appears to have had some heavy

Package rebake

Jan 9, 2019 | Hi Simond, The baking process is likely to remove any moisture after the cleaning process. We wouldn't want any moisture trapped as this might cause delamination if the package is subject to subsequent heating/reflow process. Hence there's a staging time controlled here, as the underfill process

Solder Joint Discolouration

Jan 4, 2019 | ?You mentioned something about cleaning? Every month when we are doing line maintenance we are doing a test profile...everytime after maintenace that test profile must be ok and same like the rest of the past months...

Solder Joint Discolouration

Jan 4, 2019 | Hi , thanks.. yes you are right.Its bot and top side. Decreasing the lower heaters and increasing the top heaters for secondary side. will this matter in convection reflow ovens. Since the heat at the end will get equally distributed. We were suspecting it to be something related to cleaning

Panasonic NPM-W Nozzle error

Jan 3, 2019 | We did figure out the issue. The plastic cover inside the LED lighting unit had a slight film covering it, which made the picture slightly hazy. We had to disassemble the LED module to get at it, cleaned it and it was fine. I didn't think this would be the issue as it could locate fids fine. On a

Looking for old Heller 1500 parts list and/ or manual

Nov 9, 2018 | We still have an old Heller 1500W kicking around and I can't locate a parts list or manual. I know some "spring cleaning" went on and I'm wondering if someone tossed them. The main issue is the edge rail chains seem to suddenly have a lot of slack. The teeth on the sprockets are worn down, but I

Cost Per Placement

Oct 2, 2018 | purchasing to the cleaning person 3. Building costs -rent -utilities -maintenance Add all these and divide on your number of placements. That will be you total cost/placement. For SMT - subtract the factors that don't apply. You will end up with: -operators salary(setup and machine) -machine maintenance

Need help on buying part for IEMME ITALIA Hydra 1662 Wash Machine.

Sep 26, 2018 | Thanks for your information. But the info you provided, we already found out more or less about it. The newer cleaning systems are nothing like the one I am seeking the replacement parts for. I don't think Kolb would able to provide much help for showing me the right direction where I can

Solder balls defects

Aug 1, 2018 | Please check the solder paste height near PCB edges, Please check board clamping during solder paste printing. Please check tooling support boards must be fixed during the printing process. try to set wiper cleaning frequency and fine tune for best results. please check below link for more

SMD ceramic capacitors

Jul 23, 2018 | I've never seen this before and I would be suspicious. Have you tried to dust it off with a brush or Q-tip, it might just be some sort of process contamination. Have you looked at the reel to see if the parts are coming in with these spots from the manufacturer? If the reels are clean, the next

Missprinting cleaning

Jun 1, 2018 | hahaha, I first thought the same joke and researched a bit. So to clarify to anyone reading this

Hood closing issue in Heller 1809 EXL Reflow

May 17, 2018 | We have Heller Reflow Model 1809 EXL. Today we opened it hood for internal cleaning but now not able to close them. Hood opened more from entry side. We tried to manually force open from exit side & check closing with open/close button, but hood coming down little bit but again stopping

Repairing Samsung SMxxx Feeders

Apr 2, 2018 | No idea. They are also being "failed" by the operator. If they have a part that won't pick consistently, they often blame the feeder and tag it and put it in for maintenance. He usually checks it for functionality, makes sure all screws are tight, cleans up the tape gears (that always seem

Repairing Samsung SMxxx Feeders

Jan 4, 2018 | dont light up, maybe you can try to see if the problem is the position or the feeder, by switching its placement position and see if it lights up again. The contact for the electronic part also has to be clean and maybe sprayed with contact spray.

YVL88 MKII laser Verification

Dec 1, 2017 | Hi Jeff, Glad to see you are still around. The two S's were my first port of know how hard it is to knock new information into my head. Apparently there is no visual indication. They've suggested cleaning the unit with ISO etc but I think the problem runs deeper than that. Anyway I

CHEMTRONICS FLUX OFF HEAVY DUTY- any body else use this to remove baked on RMA flux?

Nov 20, 2017 | Aerospace/military application- we have recently installed an SMT line. Our prior cleaning of RMA flux was Isopropyl Alcohol only, but with the reflow oven on line, the flux is now baked on. I am looking into FLUX OFF cleaner for removal of the baked on flux. Anybody else out there use

Ultrasonic wash for BGA

Oct 5, 2017 | Thank you for your replies. We use No-Clean Paste and some customers do not want any residue left around solder joint even so, so little. They want the residue washed completely. If we use water-soluble flux, we still need to wash, anyway. Their concern is the residue could cause failures later

Flux drop on surface of PCB

Sep 20, 2017 | Dear, Now we have some problems related to flux inside Reflow oven (Tamura oven, 7 zones). Flux drop on PCB so much. It has 2 kind of flux: wet and dry. We did maintenance cleanly reflow oven but it still happen. We are planning to test new setting of temperature by reduce temp' at pre-heat zones

Timeout waiting for nozzle changer vacuum buildup.

Sep 5, 2017 | Try a fid teach on your changers. I don't recall how to do it but you'll find it pretty easy if you surf around. Also, the seals on the nozzles must be good and soft. If you can still get them new, I'd replace. Same goes for seals in changers. Clean the nozzle seating surface of your changers

Allowable max interval of solder paste printing -> Reflow -> wash ?

Aug 16, 2017 | Hello, Can you provide me technical documents or advice about the maximum allowable intervals of each solder paste process such as Printing (opening jar) -> Reflow -> Wash ? And is there any difference among Leaded / Lead-Free, Water-soluble / No-clean and One-side / Top&Bottom ? If there are any

NXP QFN Solderability Wetting Problems

Aug 9, 2017 | We're having problems with Kester pastes (NP545 pb free and EP265 60/40 no clean pastes.) All of our other components reflow just fine with either paste, but for some reason this QFN chip doesn't wick to the QFN's pads well. It seems like some type of problem with the paste flux in my opinion. We

PCB damage in Water Cleaner

Jul 28, 2017 | with a water cleaning process? We put some of our very small and light weight boards into mesh baskets, and maybe we will have to do this for all boards, but I'm looking for some other ideas. Thanks

Soldering electrolytic capacitor

Jun 21, 2017 | , and thus makes cleaning it afterward that much more difficult. That said, i have seen it work.

Omegameter 500 information and possible replacement (ROSE Testing)

Jun 8, 2017 | clean, you need a new sensor.

Waves soldering: not enough solder remaining on pads

May 23, 2017 | Thanks Bukas. I've actually gone to a lot of trouble over the past 24 months to completely clean, rebuild and adjust the pump and nozzle assemblies and even through all of that we've still never been able to get theoretical maximal wave height from the delta wave. One thing that just occurred

Problem with less soldering material on the pins

May 1, 2017 | Looks like you have bad wetting. I will do in this order as it is easier to troubleshoot starting with the machine and transitioning to the PCB: 1. First clean some bare PCBs really good and try again. 2. Check thermal profile 3. Check flux - amount, repeatability 4. Stay longer on this joint

Problem with less soldering material on the pins

Apr 20, 2017 | have any idea how to solve this? I am cleaning the nozzle every one hour,the pots every three days.

Dross reducer for wave soldering

Mar 20, 2017 | Kleenox is designed for cleaning and protecting the solder bath in wave solder pots from air oxidation and formation. Kleenox is formulated to remove oxides. Kleenox can be used with tin/lead and lead-free solder.

Delta wave solder

Oct 12, 2016 | Speaking from experience, the solder pot surface has become "wetted" so to speak, so solder will naturally wick and seek. Allow the level to go low (perhaps 1 inch plus), clean the top surface area of the solder pot as best as you can - try to remove the solder on the surface, get a can of high

Mirae 1030 Y-Axis error

Aug 22, 2016 | More than likely the encoder scale or read head has an issue. Many times.. oil/dirt/water get on the scale and cause a bad spot or bad area. Try to clean the scale with a lint free cloth and alcohol. You should also be able to see the read head and most times it will have an led on it that should

ENIG (thru hole ring turns black after wave soldering)

Aug 2, 2016 | On a previous black pad experience we soldered a wire to a fiducial and did a pull test to failure. On the black pad board the wire and solder pulled of clean leaving the fiducial on the board. On good boards the copper came off with the wire. If you have local fiducials you can get a reading near


Jul 19, 2016 | or gunk on the sensor, but I cleaned it up. I verified that the sensor is working by going into the I/O. You can see it turn on and off when the rotor is turned by hand and the zero setting dog reaches the sensor. Does anyone know what might cause this? Thanks for any help.

Quad 4C laser align calibration

May 27, 2016 | Soooo.... I started to take the laser off last night to clean it and decided to put it back on to do some more measurements to see if anything obvious turned up and lo and behold it is not good !!! Most likely cause I can think is that you were right and there was something on one of the windows

Contamination of the cleaning agent

May 9, 2016 | I asked Randi Gates, Electrolube Marketing to join us to help with the conversation. Taking a ste

Need small quantity of chemicals for PC board fabrication

Apr 28, 2016 | at your local supermarket, your local industrial cleaning supplier, and even your local chemist. Just ask and explain. Also chemical companies that supply other industrial processes may well be happy to sell you a few kilo's of a compound you might otherwise have to buy by the drum or the pallet. regards

SM421 Vision problem

Feb 2, 2016 | Hello, We are currently having a problem with the output of the cameras in our SM421, the fault we are seeing is a flickering across only the 6 flycam cameras (this is causing SM vision to not correctly reference the parts) We have tried: Swapping the flycam I/O Swapping the vision I/O cleaning

Flux residues found after assembly process (Clean process)

Jan 9, 2016 | Thanks for your input Michael. Basically the boards had been go through from washing and even ionic

Foam fluxer maintenance, storage and cleaning

Nov 7, 2015 | Hi everyone, We just got our first wave soldering machine operational (novastar 8s) and its worki

BGA vs LGA. Which to choose?

Oct 8, 2015 | BGA's are by far much easier to process correctly and inspect. As for LGA's you'll never get 100% of the materiel out from under it during the cleaning process. The voiding issue is magnified with and LGA, the low standoff is the reason for the voids, there's not enough clearance to allow

BGA vs LGA. Which to choose?

Oct 5, 2015 | We are planning on using a chip that is available in LGA or Sn/Pb balled BGA. The package dimensions are the same. Pitch = 1.27mm. We are using a Sn/Pb soldering process and no clean paste (wash afterward) for high reliability Class 3 assemblies. Fairly low volume. Geometry is 7x11 balls. X

Look what I found - is this stencil printer a known product?

Oct 23, 2006 | Look what I found - is this stencil printer a known product? > "Surface Mount Techniques has approximately 98 > percent of the world market share of large Panel > Stencil Printers". > > It sounds a little bit > strange to me, especially since I work for one of > the companys listed in their advertisement and it > is definitely

solder compatibility

May 9, 2006 | C/O general manager Dear Sir This is Shenzhen comofaje,Ltd from China mainland We are the Associator of Hi-tech industry Association, so I think we can become your supplier in China. Now we have Four series products:1 SMT stencil wiping roll/wiper special for FUJI MPM DEK MINAMI YAMAHA SANYO and so on ,non woven wiper 2,kinds of SMT Splice tape, Stencil Machine Accessories,���� Joint Tape,��Kapton tapes, SMT Splice Clips 3 anti-static mat. 4 SMT/SMD Cutting tool and splicing tool If any of them meet your interesting please send message to

Electronics Manufacturing in Morocco

May 9, 2006 | This is Shenzhen comofaje,Ltd from China mainland We are the Associator of Hi-tech industry Association, so I think we can become your supplier in China. Now we have Four series products:1 SMT stencil wiping roll/wiper special for FUJI MPM DEK MINAMI YAMAHA SANYO and so on ,non woven wiper 2,kinds of SMT Splice tape, Stencil Machine Accessories,���� Joint Tape,��Kapton tapes, SMT Splice Clips 3 anti-static mat. 4 SMT/SMD Cutting tool and splicing tool If any of them meet your interesting please send message to

Masking of PWBs prior to conformal coat

Apr 21, 2006 | if the coating is sprayed. In my experience, when dipping a board for coating, the only way to go is liquid mask. If the tape is not completely sealed to the PCB, then capillary action will pull the coating under the tape. It happens instantly. Also, in some cases, a stencil works well. We recently had an order for a small # of boards that required a high voltage area to be coated. I cut out a quick stencil out of cardboard and sprayed the area. Worked perfectly and cost virtually nothing. There is a variety of factors to determine what's best. Unfortunately, part of that involves doing it the wrong

Defluxing Advanced Packages

Led tester