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Electrogeek
Joined: 03 Aug 2007
Posts: 104
Location: Hamilton New Zealand
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| Posted: Wed Jan 28, 2009 4:49 am Post subject: Old crt projector |
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Hi, my projector is doing something alitle funny and i was wondering if any of you had any ideas about where to look to fix/calibrate it
Sony VPH1020
on a black screen, or any image for that fact (it is most noticeable on black) the image is slightly brighter on the left of the screen then the right
also (different fault), when playing dvd's (on either of the players i use) the brightness changes gradually (can do it as often as 10 seconds peak to peak) ideas? - TV is fine, vcr is fine and xbox games are fine
Cheers
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Wed Jan 28, 2009 10:02 am Post subject: |
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Open it all up and clean it all out, pull all the connections off and put them back on, if there is a socketed chip in there pull that out and put it back in, then see how it goes. Might not do anything but if it does, youll have fixed it for nothing eh 
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Wed Jan 28, 2009 3:52 pm Post subject: |
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Just make sure you know what part's what and unplug the set for half an hour, hit the power button once to drain any remaining power then have at it. 1 piece at a time.
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Tech support for nothing
CRT.
HD done right!
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Loudmouse
Joined: 09 Jul 2008
Posts: 46
Location: Portland, Oregon
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| Posted: Wed Jan 28, 2009 6:54 pm Post subject: Re: Old crt projector |
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| Electrogeek wrote: | also (different fault), when playing dvd's (on either of the players i use) the brightness changes gradually (can do it as often as 10 seconds peak to peak) ideas? - TV is fine, vcr is fine and xbox games are fine
Cheers |
My 1020 did this too and I think it's the old copyguard thing in commercial DVD's that cause the brightness to ramp up and down. For some reason the PJ triggers this on some DVDs.
Very annoying, the only solution I found was to rip the DVD to the computer and play it from there or burn a temporary copy to DVDRW.
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Electrogeek
Joined: 03 Aug 2007
Posts: 104
Location: Hamilton New Zealand
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| Posted: Wed Jan 28, 2009 6:57 pm Post subject: |
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i was afraid you where going to say that....
i have had most of it apart of the last couple of years, is there anywhere i should focus on, bearing in mind the it is uniform over all tubes (that is the non uniform brightness)
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I have found a use for compact fluorescents hehe
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Thu Jan 29, 2009 6:33 am Post subject: |
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| AnalogRocks wrote: | | Just make sure you know what part's what and unplug the set for half an hour, hit the power button once to drain any remaining power then have at it. 1 piece at a time. |
There should be resistors to remove the residual power, but who knows what they did.
Leave it plugged into a socket and switched off, that way the metal case is still wired to earth.
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