$25 is a great buy for one of those. They remind me somewhat of Predictas. Not the world's greatest TV, but fun and eye-catching. And if you thought it was difficult to make voltage/scope tests on a Predicta while it's powered up, you ain't seen nothin' yet.
http://antiqueradio.org/Sony8-301WTelevision.htm
I ended up replacing lots of little electrolytics before mine performed (reasonably) well.
Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html