[Penthode]

Next month it is 6 years since I reformed the electrolytics. I still regularly use the set and all the chassis mount electrolytics remain fine.

Recall the set remained in an attic for over 50 years unpowered. I attribute this the electrolytic capacitor survival to slowly reforming the dielectric. When the capacitors have been reformed, the current should be no more that 200uA at full rated voltage.

Note when I began reforming the capacitors, each began as a near dead short. The initial 10 milliamperes was reached at about 15 volts! Over a period of about six hours, the current dropped slowly until after six hours, the current was 200 uA at the capacitor full rated voltage. Periodic testing showed that the current remained at around 200 uA which is normal for these types of electrolytic capacitors.

Here are some photos 721TS this morning on it's 79 year old electrolytics. The video source this time is a VHS tape of of the motion picture "Mr Smith Goes to Washington" played on my 1977 RCA VBT-200 VHS machine: the first VHS machine introduced to the US market.