Mick, If you can remember former years when they had TV sets with mechanical tuners, it kept many servicemen fed as the contacts on the switches constantly needed cleaning and from minor mechanical wear occasionally needed tensioning. To do the job properly it was time consuming and caused many servicemen to take the short cut. Just pry the tuner cover open enough to get the sprout of the tuner cleaner spray can in, blindly spray inside and hope you hit the right contacts then rotate the tuner knob a few times and hope for the best. If you ever took the cover off you could try cleaning the contacts with an eraser however you could only get to certain contacts with the eraser most of the contacts were out of reach. If you ever tried tensioning the contacts you could be on the job for hours and the average serviceman after a few tries learned not to even start the tensioning. Remember when cars had mechanical points.
The tact switch I have installed in the Spotmatic V is very well made ( I purchased 4 of these, and opened one up ) and in a sealed environment. Basically it does exactly what the original switch did, connect two points on a printed circuit board together. It fit perfectly into the area where the original contacts were and now instead of having two inch long contacts reach to make contact with two studs on the printed circuit board when you pull the on switch, you have a complete switch (tact switch) with two wires soldered to it and the other ends of the two wires soldered to the two studs. When you pull the Spotmatic V meter on switch the back of the plastic pull switch presses against the button on the tact switch and switches it on, just like many present day electronics. The result is a rock steady on. regards Denny B >sounds to me like you have come up with a nice upgrade there. If it looks ok and works fine I'd stick with the tact switch.> Regards, /\/\ick... - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
