[Elecraft] Need help troubleshooting dead receive on KX1

[Jon Ayscue]

My KX1 was working fine the last time I used it a couple of years ago. But
when I hooked it up today I discovered it has a dead receiver. All I get is
a hiss if I turn the AF gain all the way up. RF gain is at max, filter at
2.0 khz. Transmit seems to be ok.

Has anyone had this problem, or have any suggestions on where to start
troubleshooting?

Thanks
Jon KC3OU