Bosses for the network tweeted earlier this to warn of delays of up to 30 minutes “systemwide” as a result of earlier overhead line issues.
The infrastructure problems at South Gosforth temporarily prevented any trains from leaving the depot, forcing all services to be put on hold.
Journeys from Park Lane restarted shortly after 9am and services from South Hylton are expected to resume from about 9.30am.
Sunderland shopkeeper banned from running a food business after inspectors find rodent infestation and dried blood smeared across walls
25 people given jail sentences for offences in and around Sunderland in June
Vulnerable Sunderland mum died after taking drugs including methadone and diazepam
Joy as big-hearted Sunderland medics get ill toddler to his parents' wedding from his hospital bed after launching special mission
Call for action over abandoned police station after firefighter 'unbelievably lucky' to escape injury following breeze block attack