Electronics Forum | Fri Feb 17 07:18:52 EST 2017 | emeto
It looks like your troubleshooting got you to the solution. I can't think of anything I would do next, but change the heater.
Electronics Forum | Thu Feb 16 20:55:57 EST 2017 | youngbuck
Was wondering if anybody has experience a zone that will not get up to temperature. I changed the Solid state relay, made sure the thermocouple is working. The only thing I can think of is the bottom heater panel has a corroded/broken wire which is a
Electronics Forum | Wed Mar 30 17:32:55 EDT 2011 | gaz
Hi, We are using ws488 sn100c paste. Anyone have a profile for a 5 zone oven that has worked well for you?
Electronics Forum | Wed Apr 06 11:58:38 EDT 2011 | gaz
ok, thanks very much for your help.
Electronics Forum | Thu Mar 31 08:50:18 EDT 2011 | rgduval
While you're waiting, consider giving your paste manufacturer a call. They should have a database of recommended, or starting point profiles based on what oven you have. cheers, ..rob
Electronics Forum | Mon Apr 04 12:39:00 EDT 2011 | gaz
This VIP70 has thermocouple inputs, so I'm hoping that's a good enough profiler. I tried a fairly different profile than you mentioned, so will test your settings today as well. If anyone has opinions, please jump in. Thanks!
Electronics Forum | Tue Apr 05 12:18:25 EDT 2011 | gaz
That's very helpful, and much appreciated. I know it's a long shot, but I don't suppose you know what paste they are using with these settings. I am testing with sn100c ws488. Thanks! kinos
Electronics Forum | Tue Apr 05 03:16:45 EDT 2011 | grahamcooper22
one of my customers with a BTU VIP 70 has the following settings, 100 / 175 / 210 / 250 / 265 with conveyor speed of 18 ins per minute. They get a peak temp of 240~245C and time above liquidus of 220 C is @ 55 secs. Built in thermocouples should give
Electronics Forum | Tue Apr 05 16:29:18 EDT 2011 | gaz
We are not having any real issues. I am just first setting up a lead free profile, and was looking for a starting place. So far it's going well. Can you tell me more about why your paste would be better and I'll pass that on to the decision makers?
Electronics Forum | Fri Apr 01 03:02:59 EDT 2011 | grahamcooper22
starting point with zone settings would be, 100 / 160 / 200 / 225 / 260 deg C...but you'll have to check the exact profile on the pcb with a reflow profiler....making sure you meet the paste spec and making sure you don't heat any devices up to quic
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