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  #1  
Old 11-13-2019, 06:48 PM
vortalexfan vortalexfan is offline
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Quote:
Originally Posted by jr_tech View Post
Since replacing the horizontal output tube restored HV in this recent problem, I still think that is an area of concern.

jr
Well the horizontal output tube that's in the TV now that brought back the High Voltage is the Original Meck Branded 6BG6G tube and the one that I had in there when I lost my high voltage was a NOS Tung-Sol 6BG6GA tube.

The horizontal Oscillator Tube which is a 6SN7GT which is an older RCA Replacement from the late 1950s that tests near the bottom of the good zone of my Tube Tester may also be causing problems as well, which I have a NOS Tung-Sol 6SN7GTB tube but the middle keyway pin is busted on it so I don't know if I can install it correctly for it to work in my set.

As for the horizontal frequency it's about as centered as it's going to get.
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Old 11-13-2019, 07:51 PM
vortalexfan vortalexfan is offline
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Here's a picture of what the picture looks like now.

See picture below.
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File Type: jpg 20191113_200654.jpg (55.7 KB, 18 views)
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Old 11-13-2019, 07:55 PM
old_coot88 old_coot88 is offline
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Originally Posted by vortalexfan View Post
Here's a picture of what the picture looks like now.
Izzat pic with the doorknob in circuit?
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Old 11-13-2019, 07:56 PM
vortalexfan vortalexfan is offline
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Originally Posted by old_coot88 View Post
Izzat with the doorknob in circuit?
Yes. And I still haven't replaced the 1 meg 1 watt resistor in line with the high voltage anode yet, as I'm still waiting for that part to arrive in the mail.
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Old 11-13-2019, 08:04 PM
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Kevin Kuehn Kevin Kuehn is offline
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Wow, whether this TV is working or doesn't is making my head spin. That's a respectable picture you have there right now, although it could be a tad brighter. Where was the brightness set for that picture?
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Old 11-13-2019, 08:08 PM
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Kevin Kuehn Kevin Kuehn is offline
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BTW my sams says that HV cap is rated 15,000v. I think we need a different informer.
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Old 11-13-2019, 08:27 PM
vortalexfan vortalexfan is offline
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Originally Posted by Kevin Kuehn View Post
BTW my sams says that HV cap is rated 15,000v. I think we need a different informer.
Mine says 5,000 Volts I think what you're reading as a 1 in front of the 5 is actually the double cross symbol that references to the double cross symbol at the bottom of the capacitor parts list that said that some models use a 210 MMF capacitor in this position.

As for the brightness control it's in the middle or thereabouts to get the picture where I have it now.
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Old 11-13-2019, 08:47 PM
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Kevin Kuehn Kevin Kuehn is offline
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Quote:
Originally Posted by vortalexfan View Post
Mine says 5,000 Volts I think what you're reading as a 1 in front of the 5 is actually the double cross symbol that references to the double cross symbol at the bottom of the capacitor parts list that said that some models use a 210 MMF capacitor in this position.
Are we talking about C80? It sure looks like 15k to me.

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Old 11-13-2019, 09:19 PM
vortalexfan vortalexfan is offline
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Originally Posted by Kevin Kuehn View Post
Are we talking about C80? It sure looks like 15k to me.

OK, you're right it is 15,000 Volts, I confirmed it with the Sam's Folder I had of the Meck Model XL750 which was basically the model that my TV took the place of, and that one had a 10,000 Volt Capacitor listed, and seeing as my manual was a copy it was hard to read the details because the copy wasn't very clear, also when I was reading the value of the cap when I had the high voltage cage apart to check that 1 Meg 1 Watt Resistor that capacitor looked like it said 5kV on it but the writing on it was kind of worn so it may have actually said 15kV but the 1 was probably worn off.

And if that door knob capacitor were to go bad, where would one acquire one of those capacitors? I don't think anyone makes those anymore, seeing as they quit using those in TVs around the time TVs went solid state which was in the mid 1970s for some of the companies like GTE/Sylvania, and early 1980s for the rest so that's over 35 years that those Door Knob style High Voltage caps have been out of production for.

Also I had a very shocking experience last night when I was trying to adjust the horizontal size adjustment on the TV, the Horizontal Size adjustment slug was turning rather hard and so when I was turning it with my screwdriver, the screwdriver slipped and my hand hit one of the terminals on the Flyback Transformer and I got a good jolt out of it and a couple of tiny burn marks on my ring finger on my left hand.

Last edited by vortalexfan; 11-13-2019 at 09:34 PM.
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