06-13-2018, 08:33 AM
redoing but shortening up my pupose of post.
radio was free
owner said its been working for years
owner says radio recently started making a poping noise,, so he had not turned it on since last fall.
I take it home and power up.
it does pop some , thinking its a silver mica issue i turn it off after hearing a very agressive sounding "POP".
flip over the set and find a cap that is litterally on the edge of blowing,, the foil is showing.
i proceed to inventory caps and one at a time replace all paper caps.
I also use disc type caps at a temporary till my new order arrives of caps & tubes and spares for this set.
I power up after each cap is installed and all works fine.
i do not have a .25uf cap so that one remains until my order arrives.
I conclude cap replacement and take a phone call with the radio playing.
while on the phone call the radio goes silent yet all the tubes remain lighted except for the 6sk7's which i cant see light nor feel much warmth.
I have no dc output on the 25z6,, i have 120vac output where the dc is supposed to be.
~~ this rectifier tube must be shorted internally.
****my question was when you look into the glass of a tube you can see all the socket pin transitions to the internals of the tube, further these transitions are in a straight line.
is there a way to count the straight lineup inside the glass so you can identify pin 1 ect.? perhaps it is never the same because the tube type dictates how the pins *in the glass* are arranged.
I expect to simply drop in a new 25z6 and the set work,,
In my picture there is a bare tinned copper bar running across the bottom of the chassis.
from what i have read and what i can tell, this bar is supposed to have my DC power, seems kinda hazardous to me but oh well.
radio was free
owner said its been working for years
owner says radio recently started making a poping noise,, so he had not turned it on since last fall.
I take it home and power up.
it does pop some , thinking its a silver mica issue i turn it off after hearing a very agressive sounding "POP".
flip over the set and find a cap that is litterally on the edge of blowing,, the foil is showing.
i proceed to inventory caps and one at a time replace all paper caps.
I also use disc type caps at a temporary till my new order arrives of caps & tubes and spares for this set.
I power up after each cap is installed and all works fine.
i do not have a .25uf cap so that one remains until my order arrives.
I conclude cap replacement and take a phone call with the radio playing.
while on the phone call the radio goes silent yet all the tubes remain lighted except for the 6sk7's which i cant see light nor feel much warmth.
I have no dc output on the 25z6,, i have 120vac output where the dc is supposed to be.
~~ this rectifier tube must be shorted internally.
****my question was when you look into the glass of a tube you can see all the socket pin transitions to the internals of the tube, further these transitions are in a straight line.
is there a way to count the straight lineup inside the glass so you can identify pin 1 ect.? perhaps it is never the same because the tube type dictates how the pins *in the glass* are arranged.
I expect to simply drop in a new 25z6 and the set work,,
In my picture there is a bare tinned copper bar running across the bottom of the chassis.
from what i have read and what i can tell, this bar is supposed to have my DC power, seems kinda hazardous to me but oh well.