On Nov 4, 5:25 am, Mike Spera wrote:
Jack wrote:
I have a 1967 172 with a MX 170B nav/com. I noticed not long ago that
the display was flickering from bright to dim. Now the radio will not
come on at all. Any suggestions.

The "MX" is a replacement front end to the original KX 170b (made by a
defunct company called "MAC" if I remember right).

Different radio. That's the MAC-170B. The MX-170B is made by TKM.
Still very much in business and they just recently released their new
170C model.

-Robert