Wire wrap vs Solder

I assume they wrapped the wires because it made manufacturing easier. Without a socket, going directly to the transistor's legs, then wrap would be much easier than doing midair soldering.

Solder is fine. There are some photos here (link) that demonstrate good technique for how to solder this type of joint.
 
Thanks for the response and link. One more question, does anyone know the part number and board location for the voltage regulator on the 20 ez?
 
Here's the Sanyo 20ez schematic (link). The voltage regulator is IC601 and the power transistor is Q901. You can see them toward the bottom right corner of the schematic where the AC comes in.

It says Q901 is 2SD1090 (link)
 
Thanks again. One more silly question, this one concerning the acronym "hot". I've seen this used two ways "high output transistor" and "horizontal output transistor". Which is it, or are they the same and some people are just confusing the term? Last question...promise. :0)
 
Usually horizontal output transistor; it's just a description of what it does. This is the transistor that controls how the beam scans across the screen and snaps back to the start of the next line.
 
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