Absolutely, I thought the crystal would fail immediately. However, I'm now
in the situation that the oscillator only oscillates if I push it slightly
sideways. It then clicks and starts oscillating. I've checked and resoldered
it and the contact is good. I can only conclude that there is an intermitent
contact internally. When I push it sideways I even use insulated probes so
capacitance/resistance shouldn't be the answer. The clicking noise makes me
think more mechanical......

Ben

----- Original Message -----
From: Douglas Butler <dbutler@IMETRIX.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Thursday, August 16, 2001 5:12 PM
Subject: Re: [PIC]: Oscillator leads


> I have heard that it is better to shear crystal leads than to nip them.
> Use cutters whose blade pass by like scissors, rather than blades that
> meet head on.  I have never noticed a difference, but a always trim the
> leads AFTER they are soldered.  I would expect any failure to occur
> within a few seconds at most.
>
> Sherpa Doug
>
> > -----Original Message-----
> > From: Benjamin Bromilow [mailto:btbromilow@LINEONE.NET]
> > Sent: Thursday, August 16, 2001 11:52 AM
> > To: PICLIST@MITVMA.MIT.EDU
> > Subject: [PIC]: Oscillator leads
> >
> >
> > Hi all,
> >
> > How does anyone cut the leads on crystal oscillators? I used some wire
> > cutters and after a week the crystal failed.... I've heard
> > before that you
> > need to do it a different way to avoid the shockwaves going
> > up the lead and
> > cracking the crystal but how does anyone do it?? Is it better to do it
> > before soldering it in?? Alternatively if crystals are "weak" would a
> > resonator be a better option in an automotive setting? What
> > does anyone
> > think??
> >
> > TIA,
> > Ben
> >
> > ps I've programmed some 16F877s using the modified NOPPP
> > software and they
> > work just fine (the above was on 16F84s!).
> > Source code: website.lineone.net/~btbromilow/noppp2.c
> > Zipped executable website.lineone.net/~btbromilow/noppp2.zip
> >
> > --
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