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#16
07-31-2024, 02:18 PM
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Depends on what that 5 incher is you are trying to use, you have not said what it is yet, if 5kv is below what it needs to have a full raster with full scan at normal operation, then obviously you won't see anything, and in phono mode, brightness is cut no matter what.
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=^-^= 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 
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#17
07-31-2024, 03:52 PM
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Did you unmount the focus coil? It interferes with the 5AXP4 focus
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#19
07-31-2024, 05:15 PM
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Or at least move it around as see what effect it has. Also do NOT use the ion trap magnet. You should get a glow on the CRT with 5kv
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#20
07-31-2024, 07:46 PM
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Removed the focus coil...did not have the ion trap on it and there's no change. I hate to keep coming back to this switch but, I measured the voltages on the brightness control (working...ohmed out 10 ohm to 52 Kohm) with the switch in the TV position and I turned the brightness control through the full range while measuring the voltage on all three tabs and had an invariant 135 volts DC reading. No change on the brightness control voltages.
Here's this area: 
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#21
07-31-2024, 08:23 PM
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what are the voltages on the other pins of the CRT G1 and G2? you say cathode is 135 and wont change?
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=^-^= 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
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#22
07-31-2024, 08:24 PM
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Short #3 on the brightness control to ground and try
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#23
07-31-2024, 08:28 PM
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Quote:
 that will force it full on! or at least pin 2 of the brightness control should drop to near zero when you turn it to that direction if it's good.
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=^-^= 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 Last edited by Yamamaya42; 07-31-2024 at 08:31 PM.
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#24
07-31-2024, 08:32 PM
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Quote:
I'll get the voltages on V19 from pin 6 of V18 in a few. Thanks guys. You Let There Be Light!
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#25
07-31-2024, 08:46 PM
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OK the voltage weirdness is as follows. Black lead from DMM on pin 6 of V18 6SN7GT Horizontal Oscillator and voltages on V19 6BG6 Horizontal Output
Pin #: 0.0V Pin #2: 0.0V Pin #3: 4.6V Should be 8V DC Pin #4: 0.0V Pin #5: -10.0V Should be 8V DC Pin #6: 4.7V Should be 110V DC Pin #7: 6.3V AC Pin #8: 240V DC Should be 260V DC There's a jumper installed on V19 between pins 3 and 6 on my TV. Is that supposed to be there? There has been some fiddling with this TV over the years. Why isn't pin 6 over 100V DC?
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#26
07-31-2024, 08:49 PM
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No horizontal deflection but you have high voltage?!? That can only happen if the horizontal yoke is open or not connected.
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#27
07-31-2024, 08:52 PM
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Quote:
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#28
07-31-2024, 08:57 PM
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The fact that you have HV, vertical sweep but no horizontal is an indication of a possible problem with the horizontal yoke windings and the path from it to the flyback. al that must be check very closely for it;s a tuned circuit, and when it gets out of wack you are lucky to get any HV at all, the fact you have vertical sweep but no horizontal is a big pointer in the direction of the problem, I dont see where it's stated that the resistance of the horizontal part of the yoke should be, but it has to be someplace, that is a good place to start.
__________________
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#29
07-31-2024, 09:04 PM
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Quote:
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Linear Mode
