03-31-2017, 07:24 PM
Interesting question.
I found an octal socket and swapped it out after using a shrink tube on the old wires.
Re-wired same as the socket I removed that was put in by someone previously.
Hooked it up to my variac and brought it up slowly without the tube.
Then installed the tube and again brought it up slowly.
Tube filaments not lighting up.
Tried another good tube and the same.
Used my volt meter and checked voltages on the pins.
Looking at the top of the socket, have 2 wires on pins 1 and 7. pin 1 checks .236v AC
and pin 7 checks 4.93v AC
High voltage wires are connected to pins 3 and 5. Both check 367 volts AC.
Are these the correct pins for this tube?
My schematics are not readable as far as pin voltages.
All I can make out is there are 2 marked plate and 2 marked heater.
Did I duplicate a mistake made by the previous repairman?
I can always drag out my other 116 and measure the voltages on the pins on that one and see if maybe they are not connected to the proper pins.
Lets see if we can light her up tonight.
murf
I found an octal socket and swapped it out after using a shrink tube on the old wires.
Re-wired same as the socket I removed that was put in by someone previously.
Hooked it up to my variac and brought it up slowly without the tube.
Then installed the tube and again brought it up slowly.
Tube filaments not lighting up.
Tried another good tube and the same.
Used my volt meter and checked voltages on the pins.
Looking at the top of the socket, have 2 wires on pins 1 and 7. pin 1 checks .236v AC
and pin 7 checks 4.93v AC
High voltage wires are connected to pins 3 and 5. Both check 367 volts AC.
Are these the correct pins for this tube?
My schematics are not readable as far as pin voltages.
All I can make out is there are 2 marked plate and 2 marked heater.
Did I duplicate a mistake made by the previous repairman?
I can always drag out my other 116 and measure the voltages on the pins on that one and see if maybe they are not connected to the proper pins.
Lets see if we can light her up tonight.
murf