I have a 24" Sony Wega flat screen monitor that has seen heavy use in its 5+ year life.
Lately, I have noticed an increase of the color red - mainly noticeable on bright whites, faces, and fade to blacks. It is a gradual thing. Not totally correctable with hue controls.
What is the normal cause of this? Should I expect further worsening?
Thanks.
Didn't find your answer? Ask the community — no account required.
J
JANA
The CRT is getting weak. It's starting to be time to buy a new set. This is common with these sets.
--
JANA _____
Lately, I have noticed an increase of the color red - mainly noticeable on bright whites, faces, and fade to blacks. It is a gradual thing. Not totally correctable with hue controls.
What is the normal cause of this? Should I expect further worsening?
Thanks.
M
Malissa Baldwin
So you are only saying that Sony makes T.V.s with picture tubes that only last 5 years.
What s*it.
Even APEX gives better performance than that.
F*ck Sony.
U
UCLAN
Figured as much. It is on 18+ hours per day (don't ask why.) Time to start researching what is available. Space is *EXTREMELY* limited. The 24" WEGA was purchased because it was the best set that would fit in this space. Oh well...
Thanks.
J
James Sweet
If it's seen heavy use I suspect the CRT is aging. You may be able to have it adjusted to get a few more years out of it but it's hard to say. I do miss the days when things like that could be adjusted with pots on the neck board, but you may be able to enter service mode to accomplish the same, just don't be tempted to tweak things in there unless you understand exactly what you're doing.
U
UCLAN
Yeah, about 16 hours per day. I consider that "heavy."
And one enters the service mode...how? [I was in it when initially setting the thing up, but forgot how to get there.]
I miss the BLACK blacks, and the dazzling pure whites (which are slowly turning pink.)
Thanks.
J
jango2
In the good ole days that symptom might have been caused by low screen grid voltage due to a bad series resistor or a aged electrolytic filter. Have you measured screen grid voltage?.
J
James Sweet
It varies from set to set, but if you google the model number and service mode you might find it.
Most CRTs are good for about 20K hours give or take, and lifespan depends heavily on the brightness and contrast levels.
K
Ken G.
Locate the filament dropping resistor and short it out . That will let a couple more volts to the tube filament and fix the picture for some time .
The M Baldwin person is a gay guy also posing as Steven D and other names depending on the group on other groups . He , it uses Yahoo where they dont care how the internet is abused . Now watch the monkey jump .
U
UCLAN
That's about 3 1/2 years at 16 hours per day. I had both the brightness and the contrast set at about 1/3 of maximum.
I'll try Google. Thanks.
U
UCLAN
Thanks, but it is currently 10' above ground in a cabinet (still in use.) I will monitor its deterioration, and look for the best set that is less than 26" wide in the meantime. Tough to find a 24" screen in a less than 26" wide package. The 24" WEGA is 25.8" wide.
Which has better longevity: a CRT or a LCD?
Figures. Usenet is full of similar cretins. Oh well...
F
Fuchhaed
You shouldn't spend so much cursing at your betters, Malissa, rather do something more constructive - like attaching piano wire around your scrawny pencil-neck, anchoring it to a good solid iron railing and jumping naked off the nearest balcony. For extra points, be sure to leave a suicide note with a request to have the pictures posted to alt.binaries.pictures.dorks so we can all have a good laugh.
HAND.
J
James Sweet
LCD, hands down. The backlight is normally good for about 50K, but it can be replaced with some effort.
U
UCLAN
That's what I thought. Thanks.
Any thoughts on purchasing a (actually 3) high quality TV today?
J
James Sweet
I'm out of the loop as to what stuff is any good these days. Someone else will probably have some recommendations, I think most of the LCD sets are pretty similar though until you get into the high end stuff or the really super cheap crap.
M
Malissa Baldwin
Protron is good stuff
No they are not.
Like Protron
Like Sony.
M
meow2222
in that case its not a tube fault. If it were a tube fault it would be elementary to repair, by boosting the tube heater voltage 33%.
NT
J
James Sweet
It certainly can be a tube fault, emission drops, brightness is increased to compensate and contrast suffers.
Boosting the heater voltage will sometimes buy some time, but most modern tubes have thin emissive coatings and often it will look good for a few minutes/hours/days but then drop off rapidly and you're back where you started or worse.
U
UCLAN
It's a general increase in the pink hue. It's slowly invading the whites and blacks. It is also noticeable on people's faces. I adjusted the hue control more towards green, and that helped somewhat. But, I still can't get all of the pink out of the whites (nor the blacks, for that matter.)
A separate (but related) issue is the lack of tuner specifications on new LCD HDTV sets. Some say ATSC, QAM, 8VSB. Some only say ATSC, but mention in the manual that it will display QAM and 8VSB signals. Some simply don't say. This is related because I am shopping to replace the above set, and the set I get *MUST* display free, unencrypted digital and HDTV provided by the cable company, just as the ol' WEGA displayed unencrypted analog signals.
Anyone got a handle on this?
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required
Report Content
You are reporting this content to the moderators. They will look at it
ASAP.