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-   -   CRT Monitor Philips black screen when cold (https://www.diybanter.com/electronics-repair/317981-crt-monitor-philips-black-screen-when-cold.html)

Steinway January 29th 11 04:01 PM

CRT Monitor Philips black screen when cold
 
Hallo!
My CRT monitor, Philips 109B, has black screen after 2 seconds when it is
cold: the picture becomes bigger and fades away.
If I turn it off and turn on, the picture again becomes bigger and fades
out.
When it is warm, after 20-30 minutes, if I turn it off and turn on, the
screen appears and works very good.
Could it be a cap?
Thank you!
S.



Jamie January 29th 11 06:17 PM

CRT Monitor Philips black screen when cold
 
Steinway wrote:

Hallo!
My CRT monitor, Philips 109B, has black screen after 2 seconds when it is
cold: the picture becomes bigger and fades away.
If I turn it off and turn on, the picture again becomes bigger and fades
out.
When it is warm, after 20-30 minutes, if I turn it off and turn on, the
screen appears and works very good.
Could it be a cap?
Thank you!
S.


Get your solder iron out and start cleaning up those joints..

Jamie




N_Cook January 29th 11 06:51 PM

CRT Monitor Philips black screen when cold
 
Jamie t wrote in message
...
Steinway wrote:

Hallo!
My CRT monitor, Philips 109B, has black screen after 2 seconds when it

is
cold: the picture becomes bigger and fades away.
If I turn it off and turn on, the picture again becomes bigger and fades
out.
When it is warm, after 20-30 minutes, if I turn it off and turn on, the
screen appears and works very good.
Could it be a cap?
Thank you!
S.


Get your solder iron out and start cleaning up those joints..

Jamie




If the picture is changing X and Y dimensions then an acceleration voltage
is playing up, reducing magnitude leading to increasing dimensions but
fading image



circuit January 30th 11 12:46 AM

CRT Monitor Philips black screen when cold
 
bad cap in the flyback xfmr


"Steinway" slkjdskd wrote in message
. ..
Hallo!
My CRT monitor, Philips 109B, has black screen after 2 seconds when it is
cold: the picture becomes bigger and fades away.
If I turn it off and turn on, the picture again becomes bigger and fades
out.
When it is warm, after 20-30 minutes, if I turn it off and turn on, the
screen appears and works very good.
Could it be a cap?
Thank you!
S.




Fred January 30th 11 06:26 AM

CRT Monitor Philips black screen when cold
 
"Steinway" slkjdskd wrote in
:

Hallo!
My CRT monitor, Philips 109B, has black screen after 2 seconds when it
is cold: the picture becomes bigger and fades away.
If I turn it off and turn on, the picture again becomes bigger and
fades out.
When it is warm, after 20-30 minutes, if I turn it off and turn on,
the screen appears and works very good.
Could it be a cap?
Thank you!
S.




Junk it! It's time to upgrade to a flatscreen.

A new flatscreen twice as big as the CRT and a hundred kilos lighter
costs half as much as fixing the old CRT.


Sylvia Else[_2_] January 30th 11 08:13 AM

CRT Monitor Philips black screen when cold
 
On 30/01/2011 5:26 PM, Fred wrote:
"Steinway"slkjdskd wrote in
:

Hallo!
My CRT monitor, Philips 109B, has black screen after 2 seconds when it
is cold: the picture becomes bigger and fades away.
If I turn it off and turn on, the picture again becomes bigger and
fades out.
When it is warm, after 20-30 minutes, if I turn it off and turn on,
the screen appears and works very good.
Could it be a cap?
Thank you!
S.




Junk it! It's time to upgrade to a flatscreen.

A new flatscreen twice as big as the CRT and a hundred kilos lighter
costs half as much as fixing the old CRT.


Depends how much it costs to fix the CRT. If it's a bad cap, it might be
obvious which one just by looking at it (bulging top and/or leaking),
and the fix, excluding the OP's time, may cost a few dollars.

The OP should of course make sure he's aware of the hazards associated
with CRTs even when there's no power applied.

Sylvia.

Steinway January 30th 11 08:20 AM

CRT Monitor Philips black screen when cold
 

"Sylvia Else" ha scritto nel messaggio
...

Depends how much it costs to fix the CRT. If it's a bad cap, it might be
obvious which one just by looking at it (bulging top and/or leaking), and
the fix, excluding the OP's time, may cost a few dollars.

The OP should of course make sure he's aware of the hazards associated
with CRTs even when there's no power applied.

Sylvia.


In fact I'd like to repair it myself, without OP's time - if I can't repair
it, I buy another monitor :)



Steinway January 30th 11 08:27 AM

CRT Monitor Philips black screen when cold
 

"circuit" ha scritto nel messaggio
...
bad cap in the flyback xfmr



Thank you!



Sylvia Else[_2_] January 30th 11 08:31 AM

CRT Monitor Philips black screen when cold
 
On 30/01/2011 7:20 PM, Steinway wrote:
"Sylvia ha scritto nel messaggio
...

Depends how much it costs to fix the CRT. If it's a bad cap, it might be
obvious which one just by looking at it (bulging top and/or leaking), and
the fix, excluding the OP's time, may cost a few dollars.

The OP should of course make sure he's aware of the hazards associated
with CRTs even when there's no power applied.

Sylvia.


In fact I'd like to repair it myself, without OP's time - if I can't repair
it, I buy another monitor :)


I'm confused, or perhaps just befuzzled. Aren't you the OP (original
poster)?

Sylvia.


Steinway January 30th 11 09:33 AM

CRT Monitor Philips black screen when cold
 

"Sylvia Else" ha scritto nel messaggio
...


I'm confused, or perhaps just befuzzled. Aren't you the OP (original
poster)?

Sylvia.


Yes, I am the original poster, Steinway!



Fred January 31st 11 07:43 PM

CRT Monitor Philips black screen when cold
 
Sylvia Else wrote in news:8qkkteFd62U1
@mid.individual.net:

Depends how much it costs to fix the CRT. If it's a bad cap, it might be
obvious which one just by looking at it (bulging top and/or leaking),
and the fix, excluding the OP's time, may cost a few dollars.

The OP should of course make sure he's aware of the hazards associated
with CRTs even when there's no power applied.

Sylvia.



OP's savings in electric bill ALONE justifies buying the new LCD, even if
he can fix it for free.


Michael A. Terrell January 31st 11 08:53 PM

CRT Monitor Philips black screen when cold
 

Fred wrote:

Sylvia Else wrote in news:8qkkteFd62U1
@mid.individual.net:

Depends how much it costs to fix the CRT. If it's a bad cap, it might be
obvious which one just by looking at it (bulging top and/or leaking),
and the fix, excluding the OP's time, may cost a few dollars.

The OP should of course make sure he's aware of the hazards associated
with CRTs even when there's no power applied.

Sylvia.



OP's savings in electric bill ALONE justifies buying the new LCD, even if
he can fix it for free.



That depends on how much use it gets.


--
You can't fix stupid. You can't even put a band-aid on it, because it's
Teflon coated.


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