NOS late '60's Sylvania 19" B&W

[radiotvnut]

Here's a NOS 19" Sylvania late '60's tube type B&W that I got from the same place where I picked up the NOS Sylvania Exponent phonograph (see phonograph forum for details on that). When first powered up, it came up with a very bright, sharp picture. After a few minutes, the HV faded away to nothing; so, some troubleshooting is in order. I've included a picture of the chassis. You don't see too many that are this clean on the inside.