Randy wrote:
> Jon wrote:
>> 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).
I noticed at least one more adjustment I missed the first time I
peeked, "V Size", plus what looks like two smaller ones which are
unmarked (unclear if they are adjustment screws or something else.)
>> 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.
I went ahead and adjusted the three along the side, "H Stat", "Focus"
and "Scrn" and was able to improve the picture quality. The "H Scan",
recommended by a person who replied to my message on 'audiokarma.org',
did the most improvement. It got rid of most of the ghosting, but not
all of it. Tweaking the Focus and Scrn also helped. I had to turn the
"H Scan" screw all the way, wi****ng I had a little more. Not sure what
this means -- does this mean a component, like a capacitor, should be
replaced?
What will happen if I tweak the "R/G/B BKG" adjustment screws? I
really don't want to tweak them until I know what they do, especially
in that all the colors appear normal. I seem to have strong red, green
and blue.
> 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.
Thanks for the warning!
>> 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).
I did find a probably partial list online, and it was definitely
long!
> Sony's - like any other NTSC TV - the smaller the picture - the
> sharper.
I assume this has to do with the "dots per inch" effect? Or are
there other factors that improve the image quality?
> 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.
During followup research I located info on the 4" Trinitron, which
most considered a little too small for practical use. It seems like
the 5" is the minimum size for personal viewing.
The list of 5" Sony Trinitrons I uncovered include the KV-5000,
KV-5020, KV-5100, KV-5200, and KV-5300. Any others?
The 5000/5100 had a different form factor than the 5200/5300. I have
not found any pics for the KV-5020, but I assume it is similar to the
KV-5000/5100 (or was it quite different?)
Of these models, which were easier to work with and generally had the
best picture quality? Or were they all pretty much the same with only
cabinet differences?
Again, thanks!
Jon
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