CRT Monitor Blew Up?

[Albert]

Have an older 23" CRT VX1120 monitor. I lowered the resolution on it
to 1280 x1024 and a few minutes later the screen went out and now it
is totally black. Could something of blown up since I lowered the
resolution? Or was it most likely just a coincedence that it failed
on me at that time?

 

[[email protected]]

Have an older 23" CRT VX1120 monitor.  I lowered the resolution on it
to 1280 x1024 and a few minutes later the screen went out and now it
is totally black.  Could something of blown up since I lowered the
resolution?  Or was it most likely just a coincedence that it failed
on me at that time?

If that's a Gateway it's supposed to be ok with that scan rate

http://support.gateway.com/s/MONITOR/7002139/700213902.shtml

It's possible the scan rate switching is bad and it blew up. It may
not be worth the effort to repair
though with a service manual it should be possible.

GG

 

[Arfa Daily]

Have an older 23" CRT VX1120 monitor. I lowered the resolution on it
to 1280 x1024 and a few minutes later the screen went out and now it
is totally black. Could something of blown up since I lowered the
resolution? Or was it most likely just a coincedence that it failed
on me at that time?

Not really enough information about what's happening. It's a bit like saying
"I went to a different petrol station today, and now my car won't start"

Are there any lights ? Can you see the CRT heater glowing ? Are there any
ticking or whistling or 'pumping' noises coming from it ? Any "barummm"
noise from the degausing circuit when first powered from a full cold power
down ? Any 'rustle' of high voltage or feel any static on the back of your
hand from the tube face, when you power up ?

May just be coincidence, but when resolution is altered, so is the nature of
the stresses on some parts of the circuitry, and it's possible that it has
triggered a fault that was 'waiting to happen' so to speak ...

Arfa

 

[Eeyore]

If that's a Gateway it's supposed to be ok with that scan rate

http://support.gateway.com/s/MONITOR/7002139/700213902.shtml

It's possible the scan rate switching is bad and it blew up. It may
not be worth the effort to repair
though with a service manual it should be possible.

Considering how cheap you can pick up large seconfhand Sony multiscans I'd
say barely worth the trouble fixing it, although losing as large as a 23"
screen is a bummer.

Graham

 

[Eeyore]

Not really enough information about what's happening. It's a bit like saying
"I went to a different petrol station today, and now my car won't start"

Are there any lights ? Can you see the CRT heater glowing ? Are there any
ticking or whistling or 'pumping' noises coming from it ? Any "barummm"
noise from the degausing circuit when first powered from a full cold power
down ? Any 'rustle' of high voltage or feel any static on the back of your
hand from the tube face, when you power up ?

May just be coincidence, but when resolution is altered, so is the nature of
the stresses on some parts of the circuitry, and it's possible that it has
triggered a fault that was 'waiting to happen' so to speak ...

Umm ,,,, has he checked any fuses ? It it's *totally* dead ??

Graham

 

[Albert]

Thanks for the replies. On second look I noticed that I put the
resolution
to 1280 x 960, which is not supported by the Gateway. What I saw was
the
whole screen, about 1 minute after changing resolution, disappeared
forming
a diamond shape, then a single vertical line and now it is totally
dead.

I see nothing or hear nothing when I turn it on now. All I see is a
blinking
amber light showing that it is getting power. I also see no fuses or
anything
accessible that a non-qualified technician could replace so I assume
it
it ready for the grave yard. Was very surprised that even switching
to
an unsupported frequency could of caused something like this, even
though it
apparently worked for a minute or so????

Thanks to all who sent information.

 

[b]

I see nothing or hear nothing when I turn it on now. All I see is a
blinking
amber light showing that it is getting power.

Power supply is in protection mode by the look of it... could be: bad
secondary diodes, bad line output transformer or transistor, or frame /
vertical chip.

A tech should take little time to diagnose the cause. However, in my
experience with larger monitors you spend so much time dismantling to
get access to the boards that repair could be too expensive or more
that the unit is worth.

Was very surprised that even switching

to an unsupported frequency could of caused something like this,

ouch!
.....could HAVE, never ever could OF. (modal verb in perfect
infinitive )

(....takes off anorak ;-)))

 

[Jerry G.]

Using a non supported screen resolution is dangerous for any monitor.
If the monitor instructions say that you should be able to use 1280 X
1024, then its failure is purly coincidence.

For most monitors, after about 3 to 4 years their reliability drops
off very rapidly.


Jerry G.

 

[Arfa Daily]

Power supply is in protection mode by the look of it... could be: bad
secondary diodes, bad line output transformer or transistor, or frame /
vertical chip.

A tech should take little time to diagnose the cause. However, in my
experience with larger monitors you spend so much time dismantling to
get access to the boards that repair could be too expensive or more
that the unit is worth.

Was very surprised that even switching

ouch!
....could HAVE, never ever could OF. (modal verb in perfect
infinitive )

(....takes off anorak ;-)))

Oh bliss !! Someone else who can speak the language !!!

(my anorak off now as well ... d;~} )

Arfa