Sony KV-1710 horizontal osc

[zenith2134]

If it's the same type of control I'm thinking of, it's only used to adjust horizontal convergence. Any other adjustments need to be done on the CRT neck or elsewhere on a small board.

[Stone3035]

Does anyone have a schematic for a simple CRT rejuvenator ? I'd like to build one to try to restore this 470-BEB22 CRT.... What voltage should I use cathode to grid? Should it be AC or DC???

[andy]

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[Stone3035]

So, do I use 200 volts AC between G1, and the cathode? What wattage of a light bulb is optimal?? I think the heater voltage of this CRT is 100 volts. Is that correct??

[andy]

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[Stone3035]

Would it be bad to use 200 volts AC across the G1 and cathode for a short duration? I was thinking of picking up a B&K CRT tester rejuvenator. Is the 445 model a good one to do this rejuvenating process?? Which one would you recommend?

Thanks for all of your help.
"Happy Holidays"!!

[radiotvnut]

If you get a B&K, get a 467, 470, 480, or 490. The models below 467 have a very primitive rejuvenate function and you'll likely blow up your CRT. Also, adapters for most tubes are fairly easy to come by for the newer B&K models. I think the 445 dates from the '50's and is for B&W tubes only. The first CRT checker I owned was a B&K 465 from the '60's and I NEVER had any luck rejuvenating a color tube with it. Blew up plenty, though. It worked on some of the B&W tubes. My current model is a B&K 480 from the '90's and I've rejuvenated countless tubes with it. You should be able to pick up one of these fairly cheap on ebay. I'm sure they will get cheaper as time goes on due to the phasing out of CRT's.

[Stone3035]

What are your thoughts on homemade rejuvenators with the push button, and the light bulb in series?

[Stone3035]

Is there a way to rejuvenate G2, and G4?????????

[Stone3035]

How can the focus be corrected on this 470-BEB22 CRT???????

[andy]

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[Stone3035]

Is there a particular model of B&K that I should look for? I was told anything older than a 467 isn't safe to rejuvenate tubes due to the primative rejuvenate function.. Is there a focus adjustment on the D, or P boards in a KV-1710??

[andy]

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[Stone3035]

The G4 pin on the CRT socket measures 0 volts. It seems to just go to ground through a 470 K ohm resistor. I don't know if someone had been tampering with it before I aquired the set. Do you still have your KV-1710? What does your G4 measure? The schematic says it's supposed to be 165V...

[andy]

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