KX170B replacement options

Do you think there is any value in the MX-170? The display seems very
effected by moisture. For the last couple of years it would be dark
during run up and would slowly come back after the moisture was driven
out of the cabin. Today, it went to 100.00 on all 4 freqs in
mid-flight. The company that makes it (TKM) refuses to fix it because
they want me to buy their new model and they don't offer the manuals so
no shop can legally work on it. Its too bad too. I had the exact same
problem with my KX-155, the shop simply replaced the display for a very
reasonable amount of money. In my opinion, TKM are just being butts
about this.


-Robert