White light band across the CRT Screen

[Mr. Low]

Hi

My PC is using Window XP Home Edition OS.

Lately I noticed that in the middle of working with the screen, it suddently
turn black and a white band of light is visible from the left to the right at
the centre half of the screen. Usually I turn off the screen and on it back,
the normal screen returns.

The same problem recurs quite often. May I know what might have caused this
problem?

Thanks

Low

 

[Mark Adams]

Hi

My PC is using Window XP Home Edition OS.

Lately I noticed that in the middle of working with the screen, it suddently
turn black and a white band of light is visible from the left to the right at
the centre half of the screen. Usually I turn off the screen and on it back,
the normal screen returns.

The same problem recurs quite often. May I know what might have caused this
problem?

Thanks

Low

The monitor may be failing. Try a different monitor and if the problem
persists, you'll know the problem is in the computer.

 

[Bennett Marco]

Hi

My PC is using Window XP Home Edition OS.

Lately I noticed that in the middle of working with the screen, it suddently
turn black and a white band of light is visible from the left to the right at
the centre half of the screen. Usually I turn off the screen and on it back,
the normal screen returns.

The same problem recurs quite often. May I know what might have caused this
problem?

Thanks

Low

Definitely looks as if you've got a monitor problem. If it was
something in your computer, turning the monitor off and then back on
wouldn't fix the issue.

 

[Ian D]

Hi

My PC is using Window XP Home Edition OS.

Lately I noticed that in the middle of working with the screen, it
suddently
turn black and a white band of light is visible from the left to the right
at
the centre half of the screen. Usually I turn off the screen and on it
back,
the normal screen returns.

The same problem recurs quite often. May I know what might have caused
this
problem?

Thanks

Low

The vertical deflection circuit is failing. Most likely, the vertical
output amplifier is at fault.

 

[Unknown]

On a LCD monitor?

The vertical deflection circuit is failing. Most likely, the vertical
output amplifier is at fault.

 

[Mr. Low]

Hi Ian,

Thanks for your reply.

Low

 

[Ian D]

On a LCD monitor?

No, on the CRT monitor that Mr. Low has the problem with.

 

[Ian D]

Hi Ian,

Thanks for your reply.

Low

--
A36B58K641


:

You didn't give the make of the monitor. If it has a
separate vertical output amp, and is a common brand,
you're probably looking at about 25 bucks for the module
and an hour of labour. If your monitor is an inexpensive
unit, put that repair money toward an LCD screen.

The next time the vertical fails, give it a light slap with the
palm of your hand on the side, of the rear narrow part
of the case. Constant heating and cooling can cause
the circuit traces on the vertical output module to crack,
causing intermittent vertical height problems.

 

[Bill Sharpe]

You didn't give the make of the monitor. If it has a
separate vertical output amp, and is a common brand,
you're probably looking at about 25 bucks for the module
and an hour of labour. If your monitor is an inexpensive
unit, put that repair money toward an LCD screen.

The next time the vertical fails, give it a light slap with the
palm of your hand on the side, of the rear narrow part
of the case. Constant heating and cooling can cause
the circuit traces on the vertical output module to crack,
causing intermittent vertical height problems.

Ah, yes, the old slap on the side. I saw a TV cameraman fix his TV
camera that way once back in 1950 -- black and white and with tubes, of
course.

Bill

 

[Ian D]

Ah, yes, the old slap on the side. I saw a TV cameraman fix his TV camera
that way once back in 1950 -- black and white and with tubes, of course.

Bill

It can quickly help determine if it is a physical connection
problem; loose connector, cracked circuit trace, bad solder
joint, etc.