Voyager 2100

Anyone had any Voyager 2100 bad experiences?

Recently my 2100 seems to have become dicky. Unreliable synching, and S/N ratios all over the place. Then it's stable again for a day or two, then all over the place again. Router is 18 months old and worked perfectly up to about three weeks ago. Needed a reboot after a lightning storm...but was then fine for a few days.

I would have thought it would either work, or not work - not present this variable behaviour. I think I'm going to have to throw it away. I know it's not the line - exhaustive substitution of three other modem/routers seems to have eliminated that.

Any suggestions or comments?

Thanks

M