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Yah, miniman hit it with what I was looking for, the bias in the tube is pretty high....
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do you think your meter is...? Also that voltage I asked about B+ Boost, you did not post a number...? You need to measure these things today, not look up your old posts, we need to clarify exactly what is happening.... Your B+ Boost could be too high, this could be why the voltages at the reg. are higher than the schematic says they should be... .
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Yes you can call me "Squirrel boy" Last edited by Username1; 01-13-2015 at 01:59 PM. |
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The current seems high as miniman explained. And since the reg is working off b+boost
we will have to figure it out... We're trying with the clues we have.... I got one of the rca schematics off the internet, it says 390v and 376v to grid of 6bk4, you have 402, and 390V grid I believe.... So lets look at your B+ voltages..... Check them right off the caps in the PS.... 405V-c125 160mfd., 386V - c120A 80mfd, and I think the last was 276V c-120b 50mfd. Does your schematic have a total current for the HV output...? as in picture tube plus HV reg....? and an acceptable way to determine total....? As per sams.... to be accurate... .
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Yes you can call me "Squirrel boy" Last edited by Username1; 01-13-2015 at 03:32 PM. |
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Sure would be easier to follow this thread if there were some daggone punctuation...
From what I gather, the regulator seems to be working as it should. You said you put a new fly in it? You probably wired it wrong, there's no reason for HV to be drooping like this.
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Audiokarma |
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Sams can have mistakes, bounce the schematic against an RCA one?
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I thought something may be wired wrong too, that is why I asked the questions about Horiz. Centering, and focus the other day... I figure if they work, and have some reasonable range, then maybe there is no mistake...... In one of the earlier threads I also asked about the new fly, and if all the contact points were correct, or if there were mods on any install note sheet.... It would be cool if someone with recent experience on this chassis takes the point.... That reg. circuit is too simple to be causing all this trouble.... .
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Yes you can call me "Squirrel boy" |
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Can you post a picture.....? I'm gunna say I don't think you have any inside tube
coating problem.... You would have arcing, or some other problems.... Just not sure.... .
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Yes you can call me "Squirrel boy" |
Audiokarma |
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my computer that has the pic of the mark on the inside of the crt i cant use it at this moment but it is here on karma under 21fbp22 crt there is a good pic of it. let me know if you cant find it.
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the pic of the crt is on page 6 under gassy 21fbp22
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I remember it now..... I'm not concerned about it.... Don't think it's a problem...
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Yes you can call me "Squirrel boy" |
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well i dont know at this point, but i do really appreciate the help from all the members here and i do try but at the same time i was never a tv tech and i really im sorry for driving everyone here crazy with this nutty silvertone.
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Well, since you got this set with HV problems, and found some wiring mistakes in the
focus area, you should take a few steps to ensure that no problems were introduced be work done by someone else..... I think you should get, or borrow a good camera, take pictures of the flyback, the wiring, and under the chassis, post good clear picts, and some the focus wiring you found and repaired.... There are people here who have recently worked on and own several of them..... You might also find that if both of your sets are identical, as far as the chassis goes, that visual comparison might be a very good idea.... I'm confident the problem can be found, there are lots of people here who know this chassis inside out.... By the way, which Silvertone is this one.... 63, or 65...? And are they the same..... .
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Yes you can call me "Squirrel boy" |
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