You would think there would be many good places to choose from here in "Noo Yawk" but it doesnt seem to be that way. I recall there was a place in Rockville Centre that I had called a few years ago and the person on the phone seemed to sound like he knew what he was doing, but I dont have the phone # handy at the moment- perhaps you can check your Nassau County Yellow Pages (I'm in Queens).
If you are willing to go into the city, someone had recommended a place to me, I believe its called Hi Tech Electronics and they are in the vicinity of West 38th St. The name & number I have for them is Nick (212) 768-0960. Perhaps you can give a call and see what they say.
B/F