| Author |
Message |
ac/dc
Joined: 09 Jun 2006
Posts: 49
Location: Mpls Mn USA
|
| Posted: Mon Apr 07, 2008 8:38 pm Post subject: Crt Tube problem |
|
|
I own a Sony VPH 1272 . My blue tube went out and is not showing any power/light
Think the tube is dead? Or could there be something else causing the tube not to work?
I'm not a tech guy, so I have no idea how to trouble shoot. Thank You
PS, I'm amazed how good the picture looks even when the blue tube isn't working.
|
|
| Back to top |
|
 |
Tom.W
Joined: 09 Mar 2006
Posts: 6635
|
| Posted: Mon Apr 07, 2008 8:41 pm Post subject: |
|
|
|
Is the filament lit up ?
|
|
| Back to top |
|
|
ac/dc
Joined: 09 Jun 2006
Posts: 49
Location: Mpls Mn USA
|
| Posted: Mon Apr 07, 2008 11:42 pm Post subject: |
|
|
Last night the was no light at all in the blue tube.
Today I looked and the tube looked normal?? Weird
I'll run it more and see if it cuts out again. Thank you
|
|
| Back to top |
|
|
AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
|
| Posted: Tue Apr 08, 2008 12:33 am Post subject: |
|
|
Any 'snap' or 'pop' sound at all?
_________________
Tech support for nothing
CRT.
HD done right!
|
|
| Back to top |
|
|
perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
|
| Posted: Tue Apr 08, 2008 1:47 am Post subject: |
|
|
| AnalogRocks wrote: | | Any 'snap' or 'pop' sound at all? |
...or 'crackle'?
_________________
|
|
| Back to top |
|
|
whats6x7
Joined: 04 Oct 2006
Posts: 5924
|
| Posted: Tue Apr 08, 2008 2:46 am Post subject: |
|
|
| perisoft wrote: | | AnalogRocks wrote: | | Any 'snap' or 'pop' sound at all? |
...or 'crackle'? |
ROTFLMAO!!!!!!!!! 
_________________
it takes a village, but not just any village—and certainly not the village of Corleone on the outskirts of Palermo, Sicily!
|
|
| Back to top |
|
|
AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
|
| Posted: Tue Apr 08, 2008 4:05 am Post subject: |
|
|
I set 'em up you knock 'em down.
_________________
Tech support for nothing
CRT.
HD done right!
|
|
| Back to top |
|
|
Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
|
| Posted: Tue Apr 08, 2008 9:13 am Post subject: |
|
|
|
If it goes out again after heating it could be bad VPH06 in neck board.
|
|
| Back to top |
|
|
ac/dc
Joined: 09 Jun 2006
Posts: 49
Location: Mpls Mn USA
|
| Posted: Tue Apr 08, 2008 7:45 pm Post subject: |
|
|
Well the tube didn't go out, but the picture wasn't as sharp as before. The whites look a little bit yellowish and dull. Not a true white like before.
I didn't hear any weird cracks or pop noises.
|
|
| Back to top |
|
|
ac/dc
Joined: 09 Jun 2006
Posts: 49
Location: Mpls Mn USA
|
| Posted: Thu Apr 10, 2008 4:38 am Post subject: |
|
|
Tonite the set was ok for about two hours. Then my blue & now green tube went dark.
Any ideas what's going on?
|
|
| Back to top |
|
|
macgyver655
Joined: 22 Aug 2007
Posts: 8508
|
| Posted: Thu Apr 10, 2008 12:45 pm Post subject: |
|
|
|
When the tube(s) go out try pulling up an internal test pattern to verify if its a source problem or not.
|
|
| Back to top |
|
|
ac/dc
Joined: 09 Jun 2006
Posts: 49
Location: Mpls Mn USA
|
| Posted: Thu Apr 10, 2008 7:21 pm Post subject: |
|
|
|
Ok, Will try that tonite
|
|
| Back to top |
|
|
Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
|
|
| Back to top |
|
|
ac/dc
Joined: 09 Jun 2006
Posts: 49
Location: Mpls Mn USA
|
| Posted: Thu Apr 10, 2008 11:03 pm Post subject: |
|
|
Ok, Think I'm making headway.
If I turn on a test pattern such as the RGB, All tubes are working.
I use a Sony Switcher box, If I turn that on, the blue tube goes out.
So I'm assumming the switcher box is bad. Sound reasonable?
|
|
| Back to top |
|
|
Zebu Fellenz
Joined: 21 Dec 2006
Posts: 2567
|
| Posted: Thu Apr 10, 2008 11:04 pm Post subject: |
|
|
Don't assure,
Hook the source up directly and see how it looks
|
|
| Back to top |
|
|
macgyver655
Joined: 22 Aug 2007
Posts: 8508
|
| Posted: Thu Apr 10, 2008 11:31 pm Post subject: |
|
|
| ac/dc wrote: | Ok, Think I'm making headway.
If I turn on a test pattern such as the RGB, All tubes are working.
I use a Sony Switcher box, If I turn that on, the blue tube goes out.
So I'm assumming the switcher box is bad. Sound reasonable? |
Good possibility. I would try bypassing the switcher next to verify the problem is gone.
|
|
| Back to top |
|
|
ac/dc
Joined: 09 Jun 2006
Posts: 49
Location: Mpls Mn USA
|
| Posted: Thu Apr 10, 2008 11:32 pm Post subject: |
|
|
Not sure how to do that, the cable fron the switcher box goes to the projector.
You're saying run say a dvd player to the projectors rgb card and bypass the switcher?
|
|
| Back to top |
|
|
mike calcott
Joined: 18 May 2006
Posts: 307
Location: Australia
|
| Posted: Thu Apr 10, 2008 11:38 pm Post subject: |
|
|
You normally cannot plug a dvd player into RGB, but for the test purpose just plug it into the composite video input
_________________
Old dog learning new tricks
|
|
| Back to top |
|
|
macgyver655
Joined: 22 Aug 2007
Posts: 8508
|
| Posted: Thu Apr 10, 2008 11:43 pm Post subject: |
|
|
|
Bypass the switcher, yes, but I dont know what your options are without a description of you source chain or a pic of your source devices. What model switcher? RGBHV from switcher to projector? Devices connected to switcher, how? Composite, Svideo, component, vga????
|
|
| Back to top |
|
|
macgyver655
Joined: 22 Aug 2007
Posts: 8508
|
| Posted: Thu Apr 10, 2008 11:47 pm Post subject: |
|
|
| mike calcott wrote: | | You normally cannot plug a dvd player into RGB, but for the test purpose just plug it into the composite video input |
If you mean connect it to the projector's composite input, this would not help diagnosis his problem. You would then be bypassing the RGB input of the projector and the problem may be there. He needs to keep testing on the RGB input before moving to another input on the projector.
|
|
| Back to top |
|
|
|
|
