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Re: Replacements for tube style monitor flybacks...

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On 2/17/26 6:00 PM, John Robertson wrote:
> I've run into a problem - replacement flybacks for a popular monitor 
> from the 1970s used in video games is discontinued. So now I'm in a 
> situation where we either junk the monitors and replace with LCD or 
> figure out a way to generate the various voltages (up to 23KV!) needed 
> to run these monitors.
> 

The latter is unlikely to work since those flybacks also generate the 
horizontal deflection, plus helper voltages, plus, plus. You'd also have 
to replicate all that, separately, and then this whole project can turn 
into an expensive and time-consuming can of worms.


> The picture tube (19VJTP22) specs are:
> 
> Heater 6.3V
> Anode Voltage 30kV (no one ran them at 30kV!) 20 - 24kV was typical)
> Cathode Voltage 125V
> Focus Voltage 5000/6000V
> Max G2 Voltage 675V
> 
> Not sure of the current requirements yet. Hard to find that data online 
> so far...
> 
> The DC source is 120VDC max 1.25A.
> 
> Ideas? I am first considering finding other flybacks with similar 
> characteristics that could be fitted in using an adapter PCB to fix the 
> pinouts, the other alternative is HV work...
> 

IMHO finding the flyback transformer or a used monitor you can scavenge 
it from is the only viable option.

-- 
Regards, Joerg

http://www.analogconsultants.com/

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Thread

Replacements for tube style monitor flybacks... John Robertson <jrr@flippers.com> - 2026-02-17 18:00 -0800
  Re: Replacements for tube style monitor flybacks... Jeff Liebermann <jeffl@cruzio.com> - 2026-02-17 19:57 -0800
    Re: Replacements for tube style monitor flybacks... John Robertson <jrr@flippers.com> - 2026-02-18 11:13 -0800
      Re: Replacements for tube style monitor flybacks... Jasen Betts <usenet@revmaps.no-ip.org> - 2026-02-22 12:32 +0000
  Re: Replacements for tube style monitor flybacks... Don Y <blockedofcourse@foo.invalid> - 2026-02-17 22:05 -0700
    Re: Replacements for tube style monitor flybacks... John Robertson <jrr@flippers.com> - 2026-02-17 22:21 -0800
      Re: Replacements for tube style monitor flybacks... Don Y <blockedofcourse@foo.invalid> - 2026-02-18 12:54 -0700
        Re: Replacements for tube style monitor flybacks... John Robertson <jrr@flippers.com> - 2026-02-18 16:09 -0800
          Re: Replacements for tube style monitor flybacks... Don Y <blockedofcourse@foo.invalid> - 2026-02-18 17:47 -0700
            Re: Replacements for tube style monitor flybacks... bitrex <user@example.net> - 2026-02-22 15:16 -0500
              Re: Replacements for tube style monitor flybacks... Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2026-02-22 20:44 +0000
              Re: Replacements for tube style monitor flybacks... Don Y <blockedofcourse@foo.invalid> - 2026-02-22 14:17 -0700
  Re: Replacements for tube style monitor flybacks... Jan Panteltje <alien@comet.invalid> - 2026-02-18 06:38 +0000
  Re: Replacements for tube style monitor flybacks... liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2026-02-18 10:36 +0000
    Re: Replacements for tube style monitor flybacks... John Robertson <jrr@flippers.com> - 2026-02-18 11:10 -0800
  Re: Replacements for tube style monitor flybacks... Joerg <news@analogconsultants.com> - 2026-02-18 16:46 -0800
  Re: Replacements for tube style monitor flybacks... "UFO" <techforce@nospam.gmx.com> - 2026-02-18 19:55 -0500

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