Getting service state and starting it

Hello,

I want to get service state, and if the service is not started then start it, and repeat the process until it really starts (it may fail sometimes).

I tried the following :
     $svc = Get-Service Service_Name
     while ($svc.Status -eq "Stopped") {Start-Service $svc.name}
But here $svc remains static, then it won't exit the while loop even is service is started.

So I tried this in order to query the service at each occurence of loop:
     while ((get-service Service_Name | $_.Status) -eq "Stopped") {Start-service Service_Name}
But I get syntax error.

What is the correct syntax ?

Thanks for your help !
Regards
Julien