SOLVED. 1970/80s YA Fantasy with Christian Connotations. [s]

[Ruth]

These 3 kids go to live with their uncle and in his attic they find a bunch or TV sets. They turn one on and a sinister man seems to be looking at them. They go to turn it off and realize it’s not plugged in. Then all the TV’s turn on (none are plugged in) and the kids get sucked into the TV’s. They land in a world of sorcery and such and have to find each other and make their way back. (I know, it’s reminiscent of The Chronicles of Narnia). It was a really good book that I read several times and I can’t remember the name! I found it once, long ago, but it was before I knew about goodreads, so have lost the title again. Long ago, I was told it was a Christian book.

[Valerie]

Google and goodreads say The Tower of Geburah

[Ruth]

Thanks so much!
I love this group so hard!

[Rainbowheart]

The Sword Bearer for the link to the first in the series.

This one has come up a lot!