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???
05/15/06 13:06
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#116218 - Assembly houses
Responding to: ???'s previous message

I've tried two smt assembly houses and so far I've had major F*** ups.

First house:
6 connectors per board in backwards (why can't we use the boards?)
acetic cure silastic used to mount crystal (is there a difference?)
pcb had manufacturing defect that caused to solder mask to bubble
(only a small defect- what are we complaining about??)
the connector rework caused the soldermask to fall off - in order to resolve the standoff I suggested they propose a standard by which we could compare - the produced the IPC standard by which the boards were declared defective.

Did they want to re-run the boards? No way. I was being too picky and the problems were small(so they believed). We even offered to go 50-50, no go. They declared they didn't want to deal with us any more - hello? We don't want to deal with monkeys.

Second house:
Apart from quoting wrongly and them asking for more dollars (which I regretably complied with)
The boards were late and they started asking questions the week the boards were supposed to be delivered.
All the tact switches were the wrong actuator size (even though the BOM specified two part numbers and they had a sample)
The boards had a flux residue.
Substandard components were used
The pcbs were of average finish.


So could I recommend Alfatron to make boards? Ask me why?








List of 64 messages in thread
TopicAuthorDate
loosing legs            01/01/70 00:00      
   Bonded ?            01/01/70 00:00      
      I woudn't know, but how else would they            01/01/70 00:00      
   Possible mishandling?            01/01/70 00:00      
      nope            01/01/70 00:00      
         Microscope            01/01/70 00:00      
            basically            01/01/70 00:00      
               Weird            01/01/70 00:00      
   Ask contractor?            01/01/70 00:00      
      I will            01/01/70 00:00      
         It's a defect - let them figure it out.            01/01/70 00:00      
            nope            01/01/70 00:00      
               photo-micrograph            01/01/70 00:00      
                  have no microscope camera attachment            01/01/70 00:00      
                     Device failure            01/01/70 00:00      
                        the manufacturer is being tried            01/01/70 00:00      
   How many?            01/01/70 00:00      
      I do not know            01/01/70 00:00      
         you keep referring to "glue"            01/01/70 00:00      
            Glue            01/01/70 00:00      
            they are still attached            01/01/70 00:00      
               visual inspection, pre-assembly?            01/01/70 00:00      
                  No, of course not            01/01/70 00:00      
               Sabotage...            01/01/70 00:00      
                  Analysis            01/01/70 00:00      
                     none, I can see no cause but "dissolved            01/01/70 00:00      
                        About the "glue"            01/01/70 00:00      
                           just the pin            01/01/70 00:00      
                              Oops!            01/01/70 00:00      
                                 not with a temperature controlled one            01/01/70 00:00      
                                    Very strange...            01/01/70 00:00      
                                       Other chips?            01/01/70 00:00      
                                          not visible with the magnification I hav            01/01/70 00:00      
                                             More questions            01/01/70 00:00      
                                                nope            01/01/70 00:00      
                                                   relegated to "excessive stress"            01/01/70 00:00      
                                                       "reworking"?            01/01/70 00:00      
                                                         RE: reworking - it would take real fools            01/01/70 00:00      
                                                      Super disaster!            01/01/70 00:00      
                                                         in Germany, too?            01/01/70 00:00      
                                                            My waaayy            01/01/70 00:00      
                                                            Probably blowtorch, chisel and hammer            01/01/70 00:00      
                                                            Both they and we have a "SMT chip remova            01/01/70 00:00      
                                                               "SMT chip removal machine"            01/01/70 00:00      
                                                                  actualy It is quite ingenious            01/01/70 00:00      
                                                                     hmmmm            01/01/70 00:00      
                                                                     Inexperience            01/01/70 00:00      
                                       there's good reason ...            01/01/70 00:00      
                                          that saw no reason for CYA            01/01/70 00:00      
                                             I hope they're paying for the parts ...            01/01/70 00:00      
                                                I have been discussing this with the pur            01/01/70 00:00      
                                                   That's the Silab price ...            01/01/70 00:00      
                                                Assembly houses            01/01/70 00:00      
                                                   That's why the work is moving to Asia            01/01/70 00:00      
                                                      how morbid!!            01/01/70 00:00      
                                                         Yours or ours?            01/01/70 00:00      
                                                            draconian measures            01/01/70 00:00      
                                                               perhaps not ...            01/01/70 00:00      
                                                                  Not always true            01/01/70 00:00      
                                                                     If it doesn't cost, they have QC            01/01/70 00:00      
                                                                  self contradictory statement            01/01/70 00:00      
                                                                     Ask any boss ... he thinks he's a worker            01/01/70 00:00      
   Reminds me..            01/01/70 00:00      
   V-grooved PCB???            01/01/70 00:00      

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