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Sony Trinitron KV-27TS20

S

Scott Lane

Jan 1, 1970
0
JohnsonBrewer said:
This set at one time had a fantastic picture, but over time and a couple
of household moves the picture quality isn't what it used to be.
Manufactured in 06/1990, I am soliciting opinions as to whether I
should have it fixed or just go get another set.

Two main problems are 1) Overall brightness is no longer very good,
even with the brightness knob all the way up. I have calibrated the
set using my own eyes and also using a DVD calibration disc -- they
yielded roughly the same settings. 2) Overall focus isn't as sharp as
it used to be either, but it is very fuzzy along the outside edges of
the screen. I can't read the news tickers at the bottom of the screen
very well at all, it just looks like cotton balls.

The only reason I'm even thinking about repair is that a few weeks back
my young son was running in front of the set and the picture became as
clear as the first day I had it! This lasted for a couple of weeks
then went back to being fuzzy.

Any ideas? I've heard about bad solder joints and maybe the dynamic
focus isn't working. Please help.

16 year old tv. Check the back of the set for two adjustment holes. One will
be for focus, the other will make it too bright. See if you can adjust the
focus any better. If not the picture tube is probably toast.

A loose connection is usually oneof the easier repairs to make, but not
always. (Especially if it is in the shadow mask). Easy money. Turn the
board upside down, remember it is very fragile and will shock you. The big
red wire will hurt bad. Try not to unhook any wires if you don't have to but
if you do make sure you know exactly where they go. I use a sharpie
sometimes. A good light and look closely at each and every solder joint,
starting with the larger ones and you will be able to see any obvious
cracks.Keep your tip clean with a wet sponge and resolder any suspect
connections. Inspect your handiwork very closely and if you bridge two
joints together remove the excess solder with solder wick. Reassemble and
tap on the board to verify no bad connections. If there are, repeat :eek:)

But the first thing you should do is read read the faq. Sam is The Man.
Good luck. Scott
 
J

JohnsonBrewer

Jan 1, 1970
0
This set at one time had a fantastic picture, but over time and a coupl
of household moves the picture quality isn't what it used to be.
Manufactured in 06/1990, I am soliciting opinions as to whether
should have it fixed or just go get another set.

Two main problems are 1) Overall brightness is no longer very good
even with the brightness knob all the way up. I have calibrated th
set using my own eyes and also using a DVD calibration disc -- the
yielded roughly the same settings. 2) Overall focus isn't as sharp a
it used to be either, but it is very fuzzy along the outside edges o
the screen. I can't read the news tickers at the bottom of the scree
very well at all, it just looks like cotton balls.

The only reason I'm even thinking about repair is that a few weeks bac
my young son was running in front of the set and the picture became a
clear as the first day I had it! This lasted for a couple of week
then went back to being fuzzy.

Any ideas? I've heard about bad solder joints and maybe the dynami
focus isn't working. Please help
 
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