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jkruger
Joined: 24 Oct 2007
Posts: 2435
Location: Carlsbad, CA
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| Posted: Sat Jan 16, 2010 10:33 pm Post subject: SNAP goes the 1209s! |
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I'm sitting here watching the Cards/Saints game and suddenly there is a loud snap sound from the rear of the PJ and the image goes off for a half second. sh*t. Is this an indication of my quad or splitter dying?
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Sat Jan 16, 2010 10:34 pm Post subject: |
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USually not, worst case it's an HV lead from the tubes to the splitter.
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Sun Jan 17, 2010 11:33 am Post subject: |
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Sounds like partial short in tube, some crap between cathode and heater for example. Every now and then it snap and mute picture, sometimes projector shut down after loud snap. If you are lucky you see how it flash inside tubes neck. 
It usually should go away with normal use, but process can be speed up using flashing white screen.
Crt run in cycles flashing function can be found from service menu.
My tube snapped few times during movie, but two hour flashing burned that crap away...
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skippyar
Joined: 22 May 2009
Posts: 108
Location: Bristol, UK
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| Posted: Mon Jan 18, 2010 12:22 am Post subject: |
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| Ile wrote: | Sounds like partial short in tube, some crap between cathode and heater for example. Every now and then it snap and mute picture, sometimes projector shut down after loud snap. If you are lucky you see how it flash inside tubes neck.
It usually should go away with normal use, but process can be speed up using flashing white screen.
Crt run in cycles flashing function can be found from service menu.
My tube snapped few times during movie, but two hour flashing burned that crap away... |
Blimey! Thanks for this info Ile. Was on my third movie when an almighty flash and snap sound took out the display for a second.
I thought the unit had caught fire, I panicked like hell.
_________________
Barco 500 Data Owner.
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jkruger
Joined: 24 Oct 2007
Posts: 2435
Location: Carlsbad, CA
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| Posted: Mon Jan 18, 2010 6:15 pm Post subject: |
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It might be time to vacuum out all the dust again. I'm sure the dust isn't helping anything.
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secstate
Joined: 20 Mar 2006
Posts: 720
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| Posted: Tue Jan 19, 2010 12:31 am Post subject: |
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| jkruger wrote: | | It might be time to vacuum out all the dust again. I'm sure the dust isn't helping anything. |
I had one or two similar experiences with previous Barcos like this. I'd say dust on the HV lines causing an arc someplace. It does scare the s--t out of you when it happens. It only happened once or twice in over 6.5 years of Barco ownership. Failing quads tend not to make the loud snap in my (limited) experience.
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