Electronics Forum: oxidezed and board and problems (Page 1 of 22)

PM 460 problems and solutions

Electronics Forum | Tue Oct 26 19:53:38 EDT 2004 | Frank

That PM460 is quite old. It would be not be the least bit surprising if either of those controller boards in the PC were not functioning. They are what 15+ years old? I would contact the US service dept. 919-460-0111, and ask to speak with Rick.

PM 460 problems and solutions

Electronics Forum | Sun Oct 24 11:20:57 EDT 2004 | sagan

Hello everyone. The company i work for owns a PM570L and a PM460. The PM460 recently came from service repairs and it has a problem that me and the technicians at Zevatech AG are trying to solve but i would like to hear from anyone with experience o

board stretch and IPC -D-300G

Electronics Forum | Tue Nov 13 09:25:42 EST 2001 | davef

Maybe. While it doesn't help with your current problem, there is nothing that says that you cannot impose requirements in your purchase order that are stricter than D-300.

board stretch and IPC -D-300G

Electronics Forum | Mon Nov 12 13:04:35 EST 2001 | slthomas

We've got a problem with a fine pitch board that has about .005" registration error at each end (towards the center of the board) when it's printed. Apparently we've got a case of board stretch generated at the fab shop. I still have to do some mea

board stretch and IPC -D-300G

Electronics Forum | Mon Nov 12 16:14:47 EST 2001 | davef

Yes!!! How can we assemble boards with 20 pitch when we allow 0.008� error to the master art? Excellent question!!! IPC-D-300G has nothing to do with assembler requirements. It is written by and for fabricators, so that they can be comfortable.

PLCC 44 and QFP 240 tilting problems

Electronics Forum | Mon Feb 19 07:31:43 EST 2007 | jax

Check the nozzle. If these are the only two parts on the board that use a specific nozzle, it's a good place to start. The nozzle is probably not releasing well and shifting the component when trying to retract after placement...

PLCC 44 and QFP 240 tilting problems

Electronics Forum | Mon Feb 19 08:38:05 EST 2007 | realchunks

Are your pads on the board aligned correctly? I've seen this a lot lately. Pads on opposite sides are not aligned correctly. This causes the part to twist. If you have the Gerber and a way to check it, it's worth the 3 minutes to check.

Reflow soldering problems and traces under component

Electronics Forum | Mon Jul 18 12:24:53 EDT 2016 | oleksz

Some people involved in PCB assembly process claim that SMD components reflow soldering problems are often caused by traces running under a component. According to this claim, trace (or any copper) covered by solder mask and placed under SMD componen

Reflow soldering problems and traces under component

Electronics Forum | Mon Jul 18 12:25:30 EDT 2016 | oleksz

Some people involved in PCB assembly process claim that SMD components reflow soldering problems are often caused by traces running under a component. According to this claim, trace (or any copper) covered by solder mask and placed under SMD componen

Rohs and non rohs components on a board

Electronics Forum | Mon Feb 19 15:32:42 EST 2007 | blnorman

We use SnPb paste and bar with leaded and non-leaded component finishes. The predominant finish on components we use is Tin, there are a few NiPdAu. We've had no problems with the component finishes used in the SnPb process.

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