Is my power brick dangerous?

Basically, if I turn the power off at source, the power brick has a solid orange colour constantly, which flashes to white when I try to turn the xbox on. It makes the noise but doesnt power up and the white turns flashes back to orange. I can hear the fan in the power brick start up but it fails and I have to unplug thebppwer and wait for the ligh to go before trying again. It will eventually work though. Sometimes it can take 5 minutes to turn on properly sometimes 45 minutes, but it always comes on. Weirdly, a hair dryer works at getting it to come on.

Once it has been turned on though, its fine as long as I dont turn the plug off (the white light is constant on the power brick.) Is my power brick dangerous and should just always turn it off at the plug and deal with the startup issue until I can get a new power brick?

Just in case it helps, this is only an issue when the power brick is not plugged into anything for more than 10 minutes. For example I moved house yesterday and when I went to turn it on it did it because obviously it hadnt been plugged into anything for a while.