Electronics Forum | Mon May 27 12:24:21 EDT 2002 | arcandspark
Carol, I beleive there is an IPC spec for Moisture control. We see all kinds of problems with boards coming from the vendors. We use to bake all bare fabs upon recieving them. This helped alot but waste time. We now rely on the board vendors to bake
Electronics Forum | Fri May 31 10:35:46 EDT 2002 | dason_c
I think that the IPC spec only apply to the MSD. I had a paper from Lucent and forwarded by Francois Monette, please aware that the first 2 hours, the moisture doesn't bake out from the assembly/component and result show that it is increase the weigh
Electronics Forum | Fri Sep 13 11:50:03 EDT 2002 | dougt
What is happening is your bench supply is unable to supply enough current so the voltage drops. When you turn up the volume knob your asking for more current and the voltage drops more (the led's in the faceplate dim). It also sounds like when you
Electronics Forum | Fri Sep 13 13:26:34 EDT 2002 | dougt
If it's not blowing the fuse in the car then I guess it wasn't drawing a huge amount of current. Check the power wires going into the radio and look for something loose. My first guess is your loosing voltage across a bad connection somewhere and a
Electronics Forum | Fri Sep 13 10:59:35 EDT 2002 | Simon Davis
Hi Folks, This is a totally speculative, if not cheeky post. I know very little about electronics, but I think you guys do. I have a problem with my car radio, that I'd really like to solve, as I cannot buy a new one where I live (Brazil), and I th
Electronics Forum | Mon Sep 16 12:56:56 EDT 2002 | dragonslayr
simon- davef is on the right track. 1st year electronics courses teaches us that you should always check the power supply first. In this case, the power supply in question is not your power source but the regulated power within the unit. I suspect o
Electronics Forum | Tue May 21 20:27:05 EDT 2002 | davef
No N2. We could not fix a benefit for N2 in our minds. Just fold the excess bag material over to expell most air and then seal the bag. [Have you assessed the benefit of N2?] F Monette can tell you stories about little versus more pressure. If he
Electronics Forum | Thu May 09 17:28:33 EDT 2002 | davef
There is no IPC specification, nor should there be. * There are just too many peculiarities in the design and fabrication of PWB. * The issue is not defining how to store boards. The issue setting expectation for reliable products and allowing you th
Electronics Forum | Fri Sep 13 12:06:11 EDT 2002 | simon
Thanks a lot for the reply. The power supply I'm using (12v) is from an HP scanner, so I guess it's always likely that it's not man enough for the job. There were no fuse problems in the car, it just dies. As it is the same problem whether in the
Electronics Forum | Fri Jul 10 07:34:00 EDT 2020 | elijah
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