Re: Problem with PIC & LCD display

Steve H wrote:
(snip)

Significantly perhaps, powering it with a 12v battery made no difference to the symptom of the display blanking when the 0v rail is touched with a meter probe/screwdriver. This eliminates a problem with the mains filtering.

snip

I see very little in a ground plane on your circuit board, additionally the nice plastic case with the metal panels might be a source of static electricity. Try bonding the metal control panel and the bottom chassis that the CPU board is attached to as well as the bulkheads for the plastic tubing. I think you are chasing your tail with a classic ESD problem.

--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"©

"Treason doth never prosper: what's the reason?
For if it prosper, none dare call it treason."

"Follow The Money" ;-P
.

Relevant Pages

  • Re: VirtualRPC for Apple Macintosh
    ... But I would claim that the toehold allowed it to prosper over ... For the same reason that you haven't mentioned every possibility in your ... which could be purchased with impunity by wary purchasers in companies without ...
    (comp.sys.acorn.apps)
  • Re: Very nasty gossip....
    ... however only in the short term, the persons life time or less... ... but few prosper on the issues of actual life... ... Which is one reason I'm not all that displeased that I've been on my own for the last five years. ...
    (sci.research.careers)
  • Re: Best Wishes for the New Year
    ... Stupid as it may sound, ... positive attitude, ... Live long and prosper. ...
    (rec.woodworking)