Voice of Greece with tx problem: the multiple tone, hum, whine on Jan.8-9

GREECE   Voice of Greece with tx problem: the multiple tone, hum, whine on Jan.8-9:
from 1808 on  9420 AVL 170 kW / 323 deg to WeEu Greek as of 9935 several months ago
from 1200 on  9420 AVL 170 kW / 323 deg to WeEu Greek no signal from around 1220UTC