Electronics Forum: tried (Page 11 of 898)

MPM AP25 Squeege Pressure not Set

Electronics Forum | Wed Sep 19 19:48:16 EDT 2007 | simmcircuits

Yes, but it does not continue, it tried to weigh the squeegee but then after trying several times it would come up with an error that the Squeegee Left is not Free (up). Cheers

PCB Through Hole Size for Lead Free

Electronics Forum | Thu Nov 08 10:05:04 EST 2007 | pjc

I have not seen hold size as an issue when switching Sn/Pb to Pb Free wave soldering. Trying increasing your dwell time in the wave- typical for Sn/Pb is 2 to 3 seconds. Try 5 seconds to see what you get.

Affordable Inspection Microscopes?

Electronics Forum | Tue Jan 15 18:47:14 EST 2008 | operator

Funny you mention this. I tried this first. I have one now I am trying to sell for $87 dollars on EBAY. I am sure it could be useful for something other than electronics inspection. For electronics inspection of completed circuit boards it BLOWS!

Solder wetting to ENIG pads

Electronics Forum | Wed May 14 09:40:55 EDT 2008 | realchunks

Try running the second side first on a board. If it wets well, it points towards your board house. Run a blank board thru your oven and then try your normal process. If you see issues with the first side now - it definitely points towards your boa

Voiding issue

Electronics Forum | Fri Jul 25 07:26:45 EDT 2008 | realchunks

From what I can understand, you say this only happens on one type of BGA (?). Try baking this BGA. You may have out gassing during rework. Do you use tacky flux during rework? If so, try a different flux. And last, check your rework profile.

ive solder profiles

Electronics Forum | Mon Aug 11 10:48:06 EDT 2008 | realchunks

Too much flux will spatter and can leave balls on either side. From your pix you may too little flux. Try turning up and see. Also try hand applying your alcohol based flux and running through. Will take away a few question marks.

0402 wave soldering

Electronics Forum | Wed Jan 14 06:41:08 EST 2009 | andrzej

I did not tried this before (never hada chance to do it) but I considered such option - maybe try using temporary wavesolder mask on such small components. Run both sides of PCB through SMT oven and then mask 0402 completely and go with wavesoldering

sri repairs pad repairs

Electronics Forum | Tue May 19 03:19:33 EDT 2009 | cunningham

Has anyone used a hot press to bond new pads to the boards if they have been lifted? we have one and have tried and carried out some DOE's on FR4 boards but when trying the same settings on Polyamide they basically fell of can anyone give any pointe

Philips Orion, was running perfectly, now won't recognize parts

Electronics Forum | Wed Sep 09 08:28:56 EDT 2009 | thanh

have you try to adjust lighting level . are there any object over the camera??? try to clean the camera len and adjust focus, see any help.

Water soluble mask for wave

Electronics Forum | Thu Dec 17 03:10:34 EST 2009 | tod1967

Chemistries are limited for WS Mask. Try looking/changing other components, trying different flux types is easy, identify water cleanliness, is it ionic/no-ionic...probably is benign. Could be a plating reaction which is tough to investigate. Call


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