06-27-2018, 10:09 AM
resistance checks done from chassis to each 6sq7 pin
*removed all tubes to help isolate the readings
**if tube needs to be in, then tell me
results
1=0/chassis
2=9.9M
3=0/chassis
4=4.5M
5=790k
6=8.3M
7=open
8=25.8ohms
now to part 2,,,, WHICH JUST NOW really sucked!,,, "disconnect pins 4 & 5 connections"
-powered up and within 10 seconds the rect tube glowed that purdy blue "ish" color
then.................
-the 25ohm resistor on the N leg of my power cord to chassis blew a hole out the side of it letting out all the air and smoke. I tried fix a flat and the hole in the resistor still remains!
this is one of those perfect examples where i need to learn exactly what i can actually disconnect and what i cant with power applied.
the bright side is yes the radio did remain silent but its a foul ball because nothing really had time to warm up yet before the smoke.
with pins 4 & 5 empty on the 6sq7, i think that allowed the rect tube and the 25ohm resistor to become the path of least resistance.
what next?
*removed all tubes to help isolate the readings
**if tube needs to be in, then tell me
results
1=0/chassis
2=9.9M
3=0/chassis
4=4.5M
5=790k
6=8.3M
7=open
8=25.8ohms
now to part 2,,,, WHICH JUST NOW really sucked!,,, "disconnect pins 4 & 5 connections"
-powered up and within 10 seconds the rect tube glowed that purdy blue "ish" color
then.................
-the 25ohm resistor on the N leg of my power cord to chassis blew a hole out the side of it letting out all the air and smoke. I tried fix a flat and the hole in the resistor still remains!
this is one of those perfect examples where i need to learn exactly what i can actually disconnect and what i cant with power applied.
the bright side is yes the radio did remain silent but its a foul ball because nothing really had time to warm up yet before the smoke.
with pins 4 & 5 empty on the 6sq7, i think that allowed the rect tube and the 25ohm resistor to become the path of least resistance.
what next?
