While having the network issue on 2 tv's this week. Now one tv works while the other one just has a black screen when turned on. Home screen will not display.
You didnt mention the brand or model # of your Roku TV.
Try a Factory Reset (may be a pinhole/button on the back of the TV, possibly above an HDMI port)
Otherwise, you'll need to contact the manufacturer of the Roku TV for assistance:
Roku TV Partner Support Contact Information
TCLhttps://support.tclusa.com/televisions1-877-300-8837
Sharphttps://www.sharptvusa.com/supporthttp://www.sharpusa.com/CustomerSupport/ContactUs.aspx 1-888-935-8880
LGhttps://www.lg.com/us/support1-800-243-0000Hisensehttps://www.hisense-usa.com/support/1-888-935-8880
Hitachihttps://hitachidmd.force.com/hitachiserviceusa/s/1-800-448-2244
Insigniahttps://www.insigniaproducts.com/supporthttps://www.insigniaproducts.com/contact-us1-877-467-4289
Element https://www.elementelectronics.com/support/https://www.elementelectronics.com/support/get-help/1-888-842-3577
Haierhttps://www.haierappliances.com/support/productshttps://www.haierappliances.com/support/contact-us1-877-337-3639
RCAhttps://www.rca.com/support-productshttps://www.rca.com/us_en/television-4-us-en/customer-support-396-us-en1-800-968-9853
Magnavoxhttps://www.magnavox.com/en/content/7-support1-800-605-8610
Philipshttps://www.usa.philips.com/c-m/consumer-supporthttps://www.usa.philips.com/c-w/support-home/support-contact-page#n62Contact=SOUND_AND_VISION_GR%2BT...1-866-309-5962
Sanyohttps://www.sanyo-av.com/us/support/index.phphttps://www.sanyo-av.com/us/support/contact.php1-866-212-0436
JVChttp://www.us.jvc.com/support/https://jvcsmart.com/pages/support1-888-582-8870
Westinghousehttp://westinghouseelectronics.com/support/https://westinghouseelectronics.com/support/contact/1-800-701-0680
Onnhttp://onntvsupport.com/#product_support-21-844-334-2355
