No need to quit yet. Lets do some free stuff first.
Use a pattern no a changing source. Color bars etc.
Measure the 200 V source. To find it find 3 resistors that
go from the collectors of the 3 color outs. Typically they
are 18 K 2W +- where they join is the 200V.
Turn down the color, brite & contrast all the way.
Turn down the G-2 until you see NOTHING. The paint
will crack when you turn it hard.
Measure the collectors again. If the AKB is killing the
pix they will be 200V.
Trick for all Sonys with AKB for all listening.
Put in video mode no source.
Ground one end of a 15-18K resistor.
One at a time put the other end on each color out transistor
collector..
This makes a voltage divider that will turn that gun on heavy.
A good CRT will show just that color BRITE & usually with
retrace lines. A bad gun will give a dim & mucky pix.
Reds will look brown etc.
Trick 2 last resort.
since Sony CRT's wont rejuve find the low ohms resistor
in series with the filament & short it. Works on most
brands with low E. Risk is an open filament or H-K short but
whats to loose at that point ? We did quite a few & got a year
or two out of many sets.
73 Zeno
