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#286
07-29-2025, 10:45 PM
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More bad luck!
 Was trying to adjust the Width and lin a bit more today and suddenly lost brightness and vertical height, it would sometimes come back, but quickly fade, HV was fine, but something was clearly wrong, did not take long to find that one of the resistors that I had left alone ( candohm ) had failed, R215, (260 ohms 11w), so, ordered now is a RH025261R0FE02 261 ohm 25w, the closest I can find. will be here thurs, since I missed the window for them to ship it today.
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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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#287
07-30-2025, 10:47 AM
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Yop, Mouser just shipped it about an hour ago.
Tiny little thing for a 25w resistor, looks like this. https://i.ebayimg.com/images/g/pWYAA...lE/s-l960.webp Much smaller than the failed 11w one that I opened to look inside. It had not burned open or anything, but failed due to corrosion where the metal clamps to the nichrome resistor wire inside, I must have disturbed it too much bumping the HV case where it's mounted,when trying to adjust the horizontal linearity that is right near it. 
__________________
=^-^= 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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#289
07-30-2025, 09:23 PM
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I knew it was a bit of a risk not to replace those resistors, but is did not expect it to fail so soon, after they checked OK when I first got it, I have left them alone in half the sets I have so far and they have been fine for years, it's just this one that bit me!
__________________
=^-^= 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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#290
08-01-2025, 06:05 AM
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Resistor came yesterday, and all is working again!
back to where I was before, trying to get the linearity as good as i can, for now. http://suzaku.live-evil.org/0801250534.jpg fail point on the old candohm.
__________________
=^-^= 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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#291
08-04-2025, 11:43 AM
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As I mentioned, I am unable to get the stretch to go away on the left side completely, I can make it a bit smaller, but not go away, I suspect it's due to the one 56pf cap in the yoke on one of the 2 wingdings for the horizontal, which I will leave for now as I don't want to pull it all apart again right now.
I had one other brief fail, the contrast pot, 10k, completely open, no biggy, but of course, the new one has a shaft that does not match, so fitting the OEM knob will be a pain. And with all the runtime so far, the 2nd FBT has not lost a single drop of wax, and is running cool!  
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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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#292
08-05-2025, 08:42 AM
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Like I said earlier - the left side is controlled by the damper circuit. The 56pF cap in the yoke is to suppress ringing.
Swap out the damper tube or tinker with the values in the damper circuit.
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#293
08-05-2025, 09:33 AM
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Quote:
__________________
=^-^= 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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#294
08-05-2025, 10:25 AM
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One thing that has been bugging me about the damper area, is how R199 (10K) is hooked up, every schematic shows it connected to pin 3 (far side) of the horz linearity coil, but when I got this, it was hooked to pin 1, which is the damper cathode side, and I put it there when I replaced the resistor, so was this a factory update? Error by someone who worked on it in the past? Could this be causing the stretch 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
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#295
08-06-2025, 10:44 PM
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https://youtu.be/QgqQGi0XazA I have got it pretty much as good as I can get it.
__________________
=^-^= 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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#297
08-08-2025, 04:41 PM
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Quote:
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#299
08-28-2025, 07:36 AM
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Is this site really working again?
Width reduced and horizontal linearity tweaked, but still not perfect, better than it was, prob never will be. As someone said on FB, never expect perfect linearity on such an old set. Have to adjust height a bit. https://antiqueradios.com/forums/dow...?id=525744&t=1
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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; 08-28-2025 at 07:39 AM.
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#300
09-11-2025, 02:29 AM
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Come on FIX THIS SITE ALREADY!!
__________________
=^-^= 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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