Hi,
fixed similar case some years ago, the reason was that one contact inside
VFO assembly had never seen solder. It was wrapped but not soldered, all
other contacts were OK.

After the fix everything worked fine. I do not have the serial number, it
was a friend's rig that has since been sold.

73!
Ari

"Willy" kirjoitti viestissä
...
Thanks for those firsts advices.
At the first time, we have found some bad solders, but probably
not all the ones.
We have remplaced the electrochimic capacitors in the main power
supply, they were very "tired".
When the problem arrives, the reception is cut on all bands but
sometimes, the frequency counter continue to display good numbers
only on some bands.
We're going to continue to climb this mountain, meter by meter.
Thanks.

Guillaume.