Electronics Forum | Tue Mar 09 19:40:47 EST 2004 | Vijay
The shorts happen at corner of the BGA. The PCB thickness is 1.6mm, It is a PC motherboard with all thru hole connectors mounted on.The preheating is done using IR heater and the temp is 120-160 for about 70-80 sec.I am using ERSA IR550A
Electronics Forum | Tue Mar 09 19:40:55 EST 2004 | Vijay
The shorts happen at corner of the BGA. The PCB thickness is 1.6mm, It is a PC motherboard with all thru hole connectors mounted on.The preheating is done using IR heater and the temp is 120-160 for about 70-80 sec.I am using ERSA IR550A
Electronics Forum | Wed Mar 10 00:25:36 EST 2004 | kanwal324
We have the expertise of mounting and rework of all types of bga without facing any problem. If you want or you can give us one oppurtunity. K S Walia Xo Infotech Ltd. India
Electronics Forum | Fri Mar 19 07:06:27 EST 2004 | george
Vijay: If you are still having difficulty or are frustrated with your yields try http://www.solder.net. They work on the most difficult packages and boards.
Electronics Forum | Mon Mar 08 07:19:49 EST 2004 | cyber_wolf
Make sure the coupling that connects the motor to the rolex shaft is tight. Also make sure that there is no oil or grease on the rolex shaft.
Electronics Forum | Mon Mar 08 19:44:37 EST 2004 | Ken
I vote furnace is causing popcorn affect. Seen this many times over the last 4 years....especially if your buyers are buying parts on the "grey" market. Unless your running mechanical cenering machines (GOD I miss the Dynapert days)it's probably st
Electronics Forum | Tue Mar 09 09:52:59 EST 2004 | danhui888
Use ECD Xpert Ready system. This unit will helos you to predict and recommend you a correct profile. This will helps you to reduce downtime and improve your process too.
Electronics Forum | Tue Mar 09 13:14:28 EST 2004 | rob_thomas
hi, send me the data for the bds.(gerber,DXF) and I'll give you some step by step info on how to profile this bd w 3 TC and the oven software. R
Electronics Forum | Wed Mar 10 09:20:20 EST 2004 | Robert
Thanks for the offer. However, I do not have access to the gerbers as I am only a low level personnel running the SMT line. I'll probably try and win approval for the purchase of a MOLE or datalogger and go from there. Thanks all.
Electronics Forum | Sun Mar 21 11:01:07 EST 2004 | bgt
I know this response comes late, but my advice is to get your paste supplier in for some good profiling time before you decide how to do your own. My paste supplier will come in on a moments notice if I need them.
