TFT LCD - a step backward ?

[[email protected]]

In the past, when the big-fat monitors were still been used, if
there's any problem with them, I can open them up and find and fix the
problem.

Nowadays, where the TFT LCD bunch is taking over, when a monitor fail,
it just dies. Can't be repaired, nada, zilch.

To me, the TFT LCD represents a step backwards. I have on my hand 5
TFT LCD monitors that lie belly up, and I just can't fix them ! All of
them have the same problem - the back-lighting fails, but since
everything is compressed into a compact module, there's no way to fix
it !

Darn ! !

 

[Lionel]

In the past, when the big-fat monitors were still been used, if
there's any problem with them, I can open them up and find and fix the
problem.

Nowadays, where the TFT LCD bunch is taking over, when a monitor fail,
it just dies. Can't be repaired, nada, zilch.

To me, the TFT LCD represents a step backwards. I have on my hand 5
TFT LCD monitors that lie belly up, and I just can't fix them ! All of
them have the same problem - the back-lighting fails, but since
everything is compressed into a compact module, there's no way to fix
it !

I used to fix 3-4 dead LCD backlights a week. It's fiddly, but not all
that difficult.

 

[[email protected]]

In the past, when the big-fat monitors were still been used, if
there's any problem with them, I can open them up and find and fix the
problem.

Nowadays, where the TFT LCD bunch is taking over, when a monitor fail,
it just dies. Can't be repaired, nada, zilch.

To me, the TFT LCD represents a step backwards. I have on my hand 5
TFT LCD monitors that lie belly up, and I just can't fix them ! All of
them have the same problem - the back-lighting fails, but since
everything is compressed into a compact module, there's no way to fix
it !

Oh yes you can fix them. Find a replacement backlight. Taking apart
the screen is a bit tricky (Ok sometimes a lot tricky), but it can be
done.

 

[Pongo Potts]

In the past, when the big-fat monitors were still been used, if
there's any problem with them, I can open them up and find and fix the
problem.

Nowadays, where the TFT LCD bunch is taking over, when a monitor fail,
it just dies. Can't be repaired, nada, zilch.

To me, the TFT LCD represents a step backwards. I have on my hand 5
TFT LCD monitors that lie belly up, and I just can't fix them ! All of
them have the same problem - the back-lighting fails, but since
everything is compressed into a compact module, there's no way to fix
it !

Darn ! !

some repairer you are, can't fix a simple backlight.

 

[James Sweet]

In the past, when the big-fat monitors were still been used, if
there's any problem with them, I can open them up and find and fix the
problem.

Nowadays, where the TFT LCD bunch is taking over, when a monitor fail,
it just dies. Can't be repaired, nada, zilch.

To me, the TFT LCD represents a step backwards. I have on my hand 5
TFT LCD monitors that lie belly up, and I just can't fix them ! All of
them have the same problem - the back-lighting fails, but since
everything is compressed into a compact module, there's no way to fix
it !

Darn ! !

Well it's not as if anyone gets the CRT monitors repaired anymore
anyway, everything is so cheap and disposable and I suspect it will
continue that way unless disposal costs rise significantly. Also many of
the most common faults with TFT monitors can be repaired, I usually see
dead power supplies or bad backlight inverters or tubes.

 

[Lionel]

Well it's not as if anyone gets the CRT monitors repaired anymore
anyway, everything is so cheap and disposable and I suspect it will
continue that way unless disposal costs rise significantly. Also many of
the most common faults with TFT monitors can be repaired, I usually see
dead power supplies or bad backlight inverters or tubes.

Yep. All of which are cheap & easy to swap out. (Except for the tubes,
which require a fairly delicate touch.)

 

[©[email protected]]

On 26 Mar 2007 21:27:15 -0700, [email protected] wrote:

|>In the past, when the big-fat monitors were still been used, if
|>there's any problem with them, I can open them up and find and fix the
|>problem.
|>
|>Nowadays, where the TFT LCD bunch is taking over, when a monitor fail,
|>it just dies. Can't be repaired, nada, zilch.
|>
|>To me, the TFT LCD represents a step backwards. I have on my hand 5
|>TFT LCD monitors that lie belly up, and I just can't fix them ! All of
|>them have the same problem - the back-lighting fails, but since
|>everything is compressed into a compact module, there's no way to fix
|>it !
|>
|>Darn ! !

Unless they are like the 1989++ Sharp Plasma Screens, that were all
glued to hell, just popping out the "seems" would give you a good picture of
the situation..brownouts...cold solder/etc.... most are very *Tweaky*

After all the research, You only learn from your hands on
experiments.....

 

[Meat Plow]

In the past, when the big-fat monitors were still been used, if
there's any problem with them, I can open them up and find and fix the
problem.

Nowadays, where the TFT LCD bunch is taking over, when a monitor fail,
it just dies. Can't be repaired, nada, zilch.

To me, the TFT LCD represents a step backwards. I have on my hand 5
TFT LCD monitors that lie belly up, and I just can't fix them ! All of
them have the same problem - the back-lighting fails, but since
everything is compressed into a compact module, there's no way to fix
it !

Darn ! !

I've replaced ccfls in a laptop display so I imagine it would be much
easier on a desktop display.

--
#1 Offishul Ruiner of Usenet, March 2007
#1 Usenet Asshole, March 2007
#1 Bartlo Pset, March 13-24 2007
Pierre Salinger Memorial Hook, Line & Sinker, June 2004
COOSN-266-06-25794

 

[kony]

In the past, when the big-fat monitors were still been used, if
there's any problem with them, I can open them up and find and fix the
problem.

Nowadays, where the TFT LCD bunch is taking over, when a monitor fail,
it just dies. Can't be repaired, nada, zilch.

To me, the TFT LCD represents a step backwards. I have on my hand 5
TFT LCD monitors that lie belly up, and I just can't fix them ! All of
them have the same problem - the back-lighting fails, but since
everything is compressed into a compact module, there's no way to fix
it !

You must not be trying very hard. What would be interesting
is to see if there is some way to refit it with LEDs for
illumination. Not on a "good" monitor, just some junky old
thing as an experiment.

 

[Lionel]

I've replaced ccfls in a laptop display so I imagine it would be much
easier on a desktop display.

They generally use the same LCD modules, so the job is almost
identical. The advantage of a desktop display is that you have a
little bit more room to work with when you're extracting the LCD
module in the first place.

 

[Jim Yanik]

That's what I expected, but I'm happy to report than I've had more
success fixing LCD monitors than I ever did with CRT monitors. The
most common problems are simple things like bad caps and back light
problems. The inverters can often be repaired (about half of them
just have a blown fuse). I've never had to replace a CCF tube in a
desk top monitor, but at least it's possible unlike when a CRT gets
dim. Most LCD monitors are also much easier to take apart and work on
than CRT monitors. There's no more rebuilding the deflection circuit
only to have everything blow up again because the unobtainable flyback
is bad. The best part is that LCDs are light weight and easy to
handle compared to CRTs.
Andy Cuffe

[email protected]

You certainly don't have colorimetry,geometry alignment and convergence
problems with LCD displays.

 

[Andy Cuffe]

In the past, when the big-fat monitors were still been used, if
there's any problem with them, I can open them up and find and fix the
problem.

Nowadays, where the TFT LCD bunch is taking over, when a monitor fail,
it just dies. Can't be repaired, nada, zilch.

To me, the TFT LCD represents a step backwards. I have on my hand 5
TFT LCD monitors that lie belly up, and I just can't fix them ! All of
them have the same problem - the back-lighting fails, but since
everything is compressed into a compact module, there's no way to fix
it !

Darn ! !

That's what I expected, but I'm happy to report than I've had more
success fixing LCD monitors than I ever did with CRT monitors. The
most common problems are simple things like bad caps and back light
problems. The inverters can often be repaired (about half of them
just have a blown fuse). I've never had to replace a CCF tube in a
desk top monitor, but at least it's possible unlike when a CRT gets
dim. Most LCD monitors are also much easier to take apart and work on
than CRT monitors. There's no more rebuilding the deflection circuit
only to have everything blow up again because the unobtainable flyback
is bad. The best part is that LCDs are light weight and easy to
handle compared to CRTs.
Andy Cuffe

[email protected]

 

[Sofie]

usually the inverter board is NOT "compressed into a compact module"... and
many times can be repaired somewhat easily... backlights are not that
hard to replace in most designs but one has to be careful, gentle and not
"ham handed".
Dan
- - - - - - - - - - -

 

[Meat Plow]

They generally use the same LCD modules, so the job is almost
identical. The advantage of a desktop display is that you have a
little bit more room to work with when you're extracting the LCD
module in the first place.

Yeh it was the room to work in that I was talking about. I replaced the
inverter in my older Dell 15" and it was just an all around PITA.

--
#1 Offishul Ruiner of Usenet, March 2007
#1 Usenet Asshole, March 2007
#1 Bartlo Pset, March 13-24 2007
Pierre Salinger Memorial Hook, Line & Sinker, June 2004
COOSN-266-06-25794

 

[Meat Plow]

Yeh it was the room to work in that I was talking about. I replaced the
inverter in my older Dell 15" and it was just an all around PITA.

err ccfls and inverter.

--
#1 Offishul Ruiner of Usenet, March 2007
#1 Usenet Asshole, March 2007
#1 Bartlo Pset, March 13-24 2007
Pierre Salinger Memorial Hook, Line & Sinker, June 2004
COOSN-266-06-25794

 

[jonpi]

and also ... think of your eyes....

not every electron stops at the phosphorescent layer

you know, the electrons, from the gun(s), pointed at your head

 

[mark krawczuk]

hi, i tel ya know , tft monitors are no where as good as crt, crt have
better depth of color , thats why graphic designers still use em

 

[James Sweet]

I've replaced ccfls in a laptop display so I imagine it would be much
easier on a desktop display.

It's about the same really, there's not much difference in the panels
themselves, the desktop displays just have a control board in there as well.

 

[James Sweet]

and also ... think of your eyes....

not every electron stops at the phosphorescent layer

you know, the electrons, from the gun(s), pointed at your head

Huh? Electrons can't travel through the air, that's why even a tiny
amount of air leaked into a vacuum tube will cause it to stop functioning.

 

[Meat Plow]

Huh? Electrons can't travel through the air, that's why even a tiny
amount of air leaked into a vacuum tube will cause it to stop functioning.

Must have meant xrays.
--
#1 Offishul Ruiner of Usenet, March 2007
#1 Usenet Asshole, March 2007
#1 Bartlo Pset, March 13-24 2007
Pierre Salinger Memorial Hook, Line & Sinker, June 2004
COOSN-266-06-25794