Electronics Forum | Fri Apr 03 15:30:10 EDT 2009 | ed_faranda
I have a VJE Summit 750 Rework machine... I don't think that matters much, but I put it out there anyway. I am removing a BGA (29mm x 29mm) off a board, but some of the pads on the board are being lifted during the process. Does someone have any
Electronics Forum | Mon Jan 17 02:02:38 EST 2000 | PC
Can anyone there please tell me what can cause the SMt chip terminal lifted? This happen quite often and I can't find the rootcause for this problem. Does it cause by material/Placement?? Thanks
Electronics Forum | Fri Mar 21 11:25:07 EST 2003 | jonfox
His subject line is "Tantalum caps causing misaligned parts". Come on guys, I think he answered the question already. Is there any via/traces that connects the pads of the TANT to the 0805 and the BGA. Your two parts may be physically the same, bu
Electronics Forum | Wed Nov 13 21:16:28 EST 2002 | Vinny
Hi All, I am producing a lot of high cost PCBA where the pCB material is the `ROGER' material. Due to some of the high components and handling we get pad lifted issues sometimes and as of now are unable to do repairs on these. Please help if anybo
Electronics Forum | Thu Nov 14 08:30:34 EST 2002 | dphilbrick
Vinny I would call Rogers. Depending on what materail of theirs you are using it may require special processing. I would also send them one of your boards with defects they could probably tell you how to stop that from happening.
Electronics Forum | Wed Jan 19 02:00:36 EST 2000 | erico
Hi wolfgang, I think Pc is not talking about the tombstone cause this terminal lifted is different from tombstone. The terminal of chip is still there but can not be solder anymore so we have to replace the chip. I also facing this problem. So can yo
Electronics Forum | Thu Jan 20 11:16:51 EST 2000 | Wolfgang Busko
Erico:I can�t even imagine what this line looks like and what it has to do with the soldering problems without having a look at it. Also the restriction to touchup only is somewhat irritating to me. The only thing that I can think of is that in your
Electronics Forum | Thu Jan 20 02:36:29 EST 2000 | erico
Hi wolfgang,Dave & PC: What I facing are: 1. The component lie flat on the board but only one side can get solder.The pad is ok, problem is with the chip. 2.I desolder the chip and go to view it under microscope and found that there is a line near t
Electronics Forum | Wed Jan 19 08:40:53 EST 2000 | Wolfgang Busko
Hi Erico, I think it�s just a naming problem. Under the topic of tombstone there are a lot of causes for different appearances of this symptom. Shouldn�t be always the errected position that occurs. In your case it seems that either the components so
Electronics Forum | Thu Nov 14 14:16:01 EST 2002 | MA/NY DDave
Hi It doesn't have to be the the microwave Rogers Duroid(spelling?) material. Rogers does make other materials. Even though the material you suggested was also one my initial thoughts, I figured it better for him to go to a shop that has current exp
