1949 motorola table top

[timmy]

Originally Posted by bandersen

Think about it - what would you expect to see? 0 volts ? That would mean the frame was at the same potential as B++

Also what about that 0.01 off V11 going to the frame (chassi) ? Which schematic are you looking at - Motorola or Sams ?

well looking at sams and motorola schematics they both dont show a .01 at v11 but this set had one and it was original motorola cap never touched so i put a new one back i also checked it and its right on the money. so in taking one leg of that cap off gives me the verticle hold, and i think its excessive voltage on the frame from somewhere. befor i put the silicon diodes in i never checked if this problem was there befor and if the diodes were in wrong somehow the set im sure wouldnt work. i would have expected some voltage from static or leaking voltage from the rf section and beyond, like maybe 10 -50 volts maybe alittle more but not 250 volts dc. the .01 leg is off got verticle, the resistor from b- and the .05 disconnected i still have 250 volts , frame ground to b++.