Pilot tv crt

[reichsrundfu]

Well the first thing that jumps off the page for me is why. V17 pin5 shows +117 when it should show -5 volts. There is something going on there for sure. When I get home I'll yank out my SAMs and have a look at that see if anything jumps to mind. But I do know that if a circuit is expecting negative potential and it's getting a huge positive there is something wrong in there.

George

[timmy]

Originally Posted by reichsrundfu

Well the first thing that jumps off the page for me is why. V17 pin5 shows +117 when it should show -5 volts. There is something going on there for sure. When I get home I'll yank out my SAMs and have a look at that see if anything jumps to mind. But I do know that if a circuit is expecting negative potential and it's getting a huge positive there is something wrong in there.

George

I'm sorry I forgot to put negative, so what should be -5.3vdc I'm getting -125vdc. Tim

[jr_tech]

Originally Posted by timmy

I'm sorry I forgot to put negative, so what should be -5.3vdc I'm getting -125vdc. Tim

"Note: grid voltage is measured between grid and cathode."

jr