Saxon Appliances will test electric blankets for the over 60s. Usually $15 but with Super Gold Card $12.
Ensure the blanket is clearly labelled with name and contact details.
Just prior to Winter there is usually a rush so think about it before the Winter period.
Can usually do testing while you wait between 8.00am and 4.00pm Monday to Friday.
Can also service and fix most whiteware at home.