Rangervision forum recently relaunched. In an interesting move they are also launching a new website to go with the forum called Power Rangers Database. Iv'e always wanted to see a exisiting forum try this. There isn't much there at the website but the board I working fine.
http://www.rangervision.com
http://www.powerrangersdatabase.com
edit: I stand corrected. They do have some content up. With more to come. Either I missed it yesterday or they just added it.