UPDATE: Despite being told services would be restored by 3.30pm, many residents were still reporting having no TV reception at 6pm.
Some have have said a re-tune of their television has returned local channels, but with poor reception.
The Department of Communication has not answered calls.
WARRNAMBOOL residents will be without daytime television for the rest of the week as works are undertaken at transmission towers.
Further outages are scheduled over the coming weeks.
But many viewers are angry, saying they were given no notice of the outage.
The Standard was also unaware of any issues until receiving phone calls from residents this morning complaining about the outage.
After calling the ABC reception interruption hotline, The Standard was told government agency Digital Ready was carrying out works on the Warrnambool City transmitter.
A Department of Communications spokeswoman then confirmed the outage was due to work being done on the Warrnambool City transmission tower ahead of a planned re-tune on May 7.
The spokeswoman said outages would affect all channels today and tomorrow between 9.30am and 3.30pm.
Further work on Friday will affect just WIN and Southern Cross 10 channels during the same timeframe.
More outages are also expected to affect WIN on May 6, as well as all channels on May 7 and 8.
The spokeswoman said "Re-tune" was a national program that moves some free-to-air TV channels to different frequencies.
"By the end of 2014, over 400 TV towers across Australia will have had equipment re-tuned, modified or replaced to enable channel changes to occur," The spokeswoman said.
"This involves sending technicians to each tower to undertake the necessary engineering work."
Broadcasts from The Tower Hill transmitter are not due to be re-tuned until August 18.