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It Really IS an easy mod....
Choose a Horiz Drive Tx from any popular set that uses a conventional Transistor.
Remove the Original Sony Tx and replace.
Only issue--The Sony uses the 19V rail (In the case of the 1810) to supply the drive stage. You'll Maybe have to alter the drive transistor and or the supply to it--To match that of the donor transformer, so if the Donor set uses a full (say 120V +B) to the drive Tx, then you'll need to supply the modded stage with that voltage, and change the drive transistor.
The Base circuit for the Horiz Out should also match that of the donor set.
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