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  #301  
Old 09-09-2022, 09:54 AM
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Ok that’s the network that has several legs on it I believe.
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  #302  
Old 09-09-2022, 09:59 AM
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If that’s bad I Doubt I could locate that part it looks like it could be made up it’s all resistors.
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  #303  
Old 09-09-2022, 10:03 AM
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If bad, it would have to be made up on a small pcb, It's been done before.
https://retrovoltage.com/2014/10/09/...tric-circuits/
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  #304  
Old 09-09-2022, 10:19 AM
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So this agc network would this be a cause for the voltage being pulled down via the 6hs8 tube ?
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  #305  
Old 09-09-2022, 10:27 AM
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No, if not working the way it should, the AGC voltage/pulses would be all wrong, and tuning and IF would be all messed up and you would not be able to tune in anything.
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  #306  
Old 09-09-2022, 10:30 AM
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Ok but when I get the tube I’ll try it but overall I still have the voltage dropping so if the tube don’t work out I’m still looking for a cause for the voltage dropping.
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  #307  
Old 09-09-2022, 03:27 PM
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Timmy
Could you sum up what is wrong with the TV NOW without going
through the previous repairs.
In other words plug it in & see what happens like you never seen the set before.
I have lost track......

Prev screen shot looked good. But long distance troubleshooting is a challenge !
Many of us could take the TV like shown in the screen shot & vastly improve it
in seconds. That would maybe weed out problems.
Also remember NEVER trust a tube checker. The best checker is a known
good NOS brand name tube. We had an advantage here. I could turn
around & pull a tube from the shelf. It was abt 8' long & 5' high with sleeves of common tubes, more old numbers on shelves in the crapper.

73 Zeno
LFOD !
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  #308  
Old 09-09-2022, 03:40 PM
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Quote:
Originally Posted by zeno View Post
Timmy
Could you sum up what is wrong with the TV NOW without going
through the previous repairs.
In other words plug it in & see what happens like you never seen the set before.
I have lost track......

Prev screen shot looked good. But long distance troubleshooting is a challenge !
Many of us could take the TV like shown in the screen shot & vastly improve it
in seconds. That would maybe weed out problems.
Also remember NEVER trust a tube checker. The best checker is a known
good NOS brand name tube. We had an advantage here. I could turn
around & pull a tube from the shelf. It was abt 8' long & 5' high with sleeves of common tubes, more old numbers on shelves in the crapper.

73 Zeno
LFOD !
ok first the pic with the face was to rule out the video amp and output by injecting video. Turn it on b+ good few seconds later b+ drops and in doing so the horizontal oscillator won’t run because b+ is being pulled down to far so in using the sets IF cannot get an image weather or not the voltage being draw down has to do with that I don’t know maybe there is an IF problem as well. I have a tube coming maybe this is the problem I don’t know until I get it to try.
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  #309  
Old 09-10-2022, 08:58 AM
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Got the 6hs8 no different but I did pull the 6cg7 AGC and vertical multi voltage stayed up I got a new 6cg7 made no difference so the one vertical half is working because I have a full screen so that may leave it to an AGC problem still bearly any sound scratchy static sound and with the 6cg7 in I can here a buzzing from somewhere. If k3 is bad or the cap inside is shorted I can make it up but it shows a line under the 94k resistor which is the .002 cap but it also shows a ground in the center of the line so where does the ground come from. I don’t remember seeing a cap with 3 legs. Does this mean 2 caps one on each side of the 94k resistor both to ground.

Last edited by timmy; 09-10-2022 at 10:35 AM.
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  #310  
Old 09-10-2022, 05:59 PM
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Does anyone know what this T line means 2 .002 caps one on each end of the 94k resistor

Last edited by timmy; 04-24-2023 at 04:16 PM.
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  #311  
Old 09-10-2022, 07:21 PM
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Quote:
Originally Posted by timmy View Post
Does anyone know what this T line means 2 .002 caps one on each end of the 94k resistor
That is another couplet, like K1. K3 is a combo part, 2 resistors 1 cap in 1 package.
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  #312  
Old 09-10-2022, 07:24 PM
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But the T does it represent 2 caps one on each side of the 94k
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  #313  
Old 09-10-2022, 07:52 PM
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It intends to show .002 distributed across the resistor. When making a replacement put a .001 to ground on each end of the resistor so the total is .002

Is there another resistor that is covered by the black splotch?
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  #314  
Old 09-10-2022, 09:59 PM
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remove V1,V2,V3 ,V7,V8.

feed video back to test point B like you did before and see how long it can run like that.
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  #315  
Old 09-11-2022, 06:10 AM
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Quote:
Originally Posted by Tim View Post
It intends to show .002 distributed across the resistor. When making a replacement put a .001 to ground on each end of the resistor so the total is .002

Is there another resistor that is covered by the black splotch?
No there is not only one for this area.
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