621TS coming to life after 40+ years

[Eric H]

I finally got around to starting work on this set that I got over a year ago.

After replacing some electrolytics and a few paper caps it will fire up and work as seen in the picture.

Issues include: no sound, very unstable sync, vertical transformer rattles loudly, brightness control only goes from bright to very bright, electromagnetic ion trap seems to be non-functional (on 7DP4, tube used for the pic is a 5AXP4, no trap needed.) Focus control doesn't do much with the 7DP4 but the pic on the 5AXP4 is razor sharp.

I've only replaced 5 paper caps so far because I'm restuffing them which is a painfully slow process but will keep the appearance original top and bottom.
Each capacitor replaced has made a noticable difference in the performance however.

One paper cap attached to the Horiz output tube had never been soldered, just wrapped around the post! (see pic)
Wonder if that had ever given them problems?