#16
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Quote:
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#17
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Hard to tell, one is listed in volts per inch, the other is per cm, not sure how that crosses over.
But more likely than not, it's the difference in pf that is the issue.
__________________
=^-^= Yasashii yoru ni hitori utau uta. Asu wa kimi to utaou. Yume no tsubasa ni notte. いとおしい人のために |
#18
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And the pf cannot be made up with the proper cap ?
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#19
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That will have to be looked into by someone who knows the circuit a bit more, but I'm sure it can be adjusted.
__________________
=^-^= Yasashii yoru ni hitori utau uta. Asu wa kimi to utaou. Yume no tsubasa ni notte. いとおしい人のために |
#20
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Is The pf difference with the circuit or the deflection plates themselves
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Audiokarma |
#21
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I did manage to get the screen full but the people on the screen part was missing to big stretched
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#22
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Yes, since the distance from the center of deflection to the screen is so small in this tiny tube, deflection sensitivity is poor.
jr |
#23
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The original set and circuit must have been made with the 3KP4 in mind, and the capacitive load it would put on the circuit, so it makes sense that a different tube would have unexpected results, so as mentioned, someone with a good understanding of this set may be able to help adapt it.
May only need a few changes.
__________________
=^-^= Yasashii yoru ni hitori utau uta. Asu wa kimi to utaou. Yume no tsubasa ni notte. いとおしい人のために |
#24
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I wonder if the hv deflection caps would make any difference
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#25
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Maybe a different vertical size pot instead of 5 meg
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Audiokarma |
#26
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Unfortunately, it won't be as easy as a single part, It will take someone with knowledge of tube circuits who can look over the documentation for the set and theory of operation and make suggestions on how to adapt it better to that CRT, it may just be needing a few changes of caps and resistors in the vertical drive / output area to make it a better match.
__________________
=^-^= Yasashii yoru ni hitori utau uta. Asu wa kimi to utaou. Yume no tsubasa ni notte. いとおしい人のために |
#27
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Perhaps it would be useful if the B+/B- voltages applied to the vertical circuit were increased ....what do they measure now?
jr |
#28
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So I have to figure out the b+ voltage to the vertical amp or multi.I’m not certain where the voltage comes from for vertical possibly a tap from focus voltage
Last edited by timmy; 02-03-2024 at 06:48 AM. |
#29
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B+ is from the 25Z6, and B- is from the 35W4...Don’t you have a schematic?
What do they measure now? jr |
#30
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Yes I know where to get the b+ but I thought you meant the b+ to the vertical circuit I’ll check the voltage at the rec tubes I do know it’s close to what it should be. And yes I have a schematic. How would I be able to up the b+ ?
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Audiokarma |
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