You could try to replace the two capacitors in the XO, you can find suitable replacements here 4.7uF Capacitors and here 3.3uF Capacitors The XO calls for a 3.4uF, the 3,3 will suffice but if your a stickler bypass it with one of these 0.1uF bypass Cap
It would be veery unlikely that the capacitors have failed, however like Dover
I can recall some Solen Caps fail many years ago.
Best of luck
Peter
It would be veery unlikely that the capacitors have failed, however like Dover
I can recall some Solen Caps fail many years ago.
Best of luck
Peter