Thanks, Don. Would you mind outlining the approach for analyzing the front panel switch matrix?
> On Jun 10, 2018, at 3:55 PM, Don Wilhelm <[email protected]> wrote: > > Mark, > > OK on that. Since you have the new encoder board, it could be touching the > pins on the back of the Control Board which can cause all kinds of "strange > happenings". > First step is to flush cut (diagonal cutters will not do the job) the pins on > the encoder board (cut right down into the solder). Then flush cut the leads > on the back of the Control Board where it can contact the encoder board. > As an added protection measure, put a piece of card stock (business card of > part of a QSL card) between the encoder board and the Control Board - or > better yet a flat piece of plastic, like that used in many shrink wrapped > packages from the store. > > Then see if the behavior settles down. > If it does not, you will have to find the problem in the Front Panel switch > matrix (not an easy task). > > 73, > Don W3FPR > >> On 6/10/2018 6:44 PM, Mark Petrovic wrote: >> Don, the soldering on RP1 is very clean, top (viewed from the side of the >> board with a light and magnifying glass) and bottom. RP1 is aligned >> correctly, and I've verified that it is the correct part for this location. >> >> Worth mentioning is that the rubber spacer that installs onto the >> bottom-side of the board in the corner nearest pin 10 of RP1 is attached >> with a small drop of super glue (the original adhesive on the rubber pad >> failed, as the pad fell off during casual handling of the board). My >> understanding is that this cyanoacrylate super glue is non-conductive, nor >> does the spacer w/glue bridge any solder pads. I've not inspected the front >> panel board from the top, as this would require unsoldering the 4 leads >> holding the encoder board to the front panel board. >> >> > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
