Jon wrote:
> Anyway, peeking behind the back of the KV-1207, I notice what appear
> to be various adjustment screws (inset into the case): "H Stat",
> "Focus", "Scrn", "R BKG", "G BKG" and "B BKG"). Are these the
> remaining adjustments for the set,
Yup - that's them.
> If these are the adjustments that I could tweak to see if I
> could sharpen up the image and remove the ghosting, what is the
> procedure to do so?
1) the one's you've mentioned - you can't "damage" the set by tweaking -
but without the proper sequence, etc. - you may get them to where you
worse off than you are now (particularly the RGB Background and Screen
controls).
> Or does this require special equipment to do
> right?
Not equipment (not for this - static convergence "calls" for a 40X
scope, IIRC). I would get the service manual for it - preferably the
Sony factory book - as it has stuff SAMS doesn't, (though SAMS would be
better than nothing). Following the factory procedure - you'd at least
know that once done - it's as good as "adjusting" is going to get.
BTW - there are magnets stuck allover the tube - on little tabs of
plastic - these are static convergence magnets DO NOT TOUCH!!!!! you'll
regret it for - oh -- about two days - while you figure out how to get
them back right. Not only is their position on the tube critical - but
the angle they are applied at also affects beam landing.
> Also, the set is so old and never repaired I assume it is full of
> dust, and probably a good idea to remove the dust. What is the
> procedure to de-dust the chassis (and things to watch out for)?
very low pressure air - like a "squirt" can you can get at wallyworld or
office supply stores. Gentle does it - (don't blow off any magnets).
> And thanks for the comment on the KV-1722 being one of the best
> designed Trinitrons ever sold.
I'm not sure I'd say best designed - as much as most interesting
design... They are truly unique, even among other Sonys.
> I am quite interested to know all the different Sony Trinitron models
> built over the years (is there an online list? haven't found one...)
Oh, crap - that'd be in the thousands - there were hundreds of models by
the time I got out of bench repair (early 80s).
> The older miniature Sony Trinitrons (13" and less) are of especial
> interest to me. How small did they make them? (I know of 5".) And are
> any of these "miniatures" considered to be well-designed with great
> picture quality on par with the classic KV-1722?
Sony's - like any other NTSC TV - the smaller the picture - the sharper.
The KV-5000 and 8000s were neat sets - and not all that terribly hard
to work on in spite of their size and very "full" cabinets. The 8000
seems to be harder to find than the much more common 5000 - IIRC - there
was also KV-4100 - though I don't recall ever seeing one in the flesh.
One other thing about the KV-1722 - Be very careful should you decide to
get one - consider the picture tube suspect... That's the reason we got
rid of ours - the tube was getting quite dim - and of course - it had
been "tweaked" all it could (then again - it had been ****pped from Japan
to Guam to New****t News, Va - then here (Meridian, MS) - so it had seen
some travel - and a lot of use).
best regards...
--
randy guttery
A Tender Tale - a page dedicated to those ****ps and Crews
so vital to the United States Silent Service:
http://tendertale.com
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