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jeffslife
Joined: 17 Apr 2010
Posts: 4190
Location: ohio usa
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| Posted: Mon Feb 15, 2016 6:24 pm Post subject: AR changing ? |
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For about 10 days the image on my screen changed height. It was about 3 inches above where it normally is. The bottom part of the image didn't move at all and it didn't occur in the 2.40- 2.35 AR at all. I checked all cables and could find nothing out of place. I even removed them and checked to be sure they were clean. Last night when I turned everything on to watch my favorite night of TV all was back to normal. I am confused. Has this ever happened to anybody else ? Just curious.
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AnalogRocks
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Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Mon Feb 15, 2016 9:38 pm Post subject: |
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Were the R G B aligned or did they drift as well?
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jeffslife
Joined: 17 Apr 2010
Posts: 4190
Location: ohio usa
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| Posted: Tue Feb 16, 2016 5:52 pm Post subject: |
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The image was perfect it was just a few inches higher.
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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 Feb 17, 2016 10:04 am Post subject: |
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Maybe high voltage?
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jeffslife
Joined: 17 Apr 2010
Posts: 4190
Location: ohio usa
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| Posted: Wed Feb 17, 2016 7:10 pm Post subject: |
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Its doing it again, only its only about an inch this time.
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cmjohnson
Joined: 03 Apr 2006
Posts: 5180
Location: Buried under G90s
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| Posted: Wed Feb 17, 2016 9:10 pm Post subject: |
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You either have a flaky connection or some component is beginning to break down.,
I'd reseat all boards and connectors as the first step, then start looking for solder ring cracks around components that run hot, and signs of overheating, swelling, and leakage out of any electrolytic capacitors
If it's not something that can be fixed by reseating boards and connectors, then a technician needs to get involved as you may be experiencing early symptoms of a failure that will only get worse and more expensive if allowed to progress to its ultimate failure state.
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gregstv
Joined: 27 Aug 2007
Posts: 628
Location: Australia
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| Posted: Wed Feb 17, 2016 11:23 pm Post subject: |
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What Projector is it?
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jeffslife
Joined: 17 Apr 2010
Posts: 4190
Location: ohio usa
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| Posted: Thu Feb 18, 2016 6:42 pm Post subject: |
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Sony G90
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CIR Engineering
Joined: 25 Aug 2008
Posts: 4269
Location: Chicago USA & Berlin Germany
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| Posted: Thu Feb 18, 2016 8:17 pm Post subject: |
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Jeff and I spoke on the phone today about this. I'm pretty sure it's his vertical deflection board. This is a fairly frequent failure on the G90 if it is what I think it is. Jeff's going to mail me the board in a couple weeks.
I don't think operating the projector in this state will damage anything. However, at some point the projector will probably start throwing error codes and shut down or refuse to turn on. I guess at 17-18 years old something is bound to fail sooner or later  I don't think it's a big problem though and I think the projector can be fixed without hurting the calibration I put on it either.
craigr
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jeffslife
Joined: 17 Apr 2010
Posts: 4190
Location: ohio usa
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| Posted: Sat Feb 27, 2016 10:08 pm Post subject: |
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Last night the power went out for about an hour. Today I turned on the HT and everything was NORMAL again. I don't get it. I reset everything once before AND turned off the power.
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jeffslife
Joined: 17 Apr 2010
Posts: 4190
Location: ohio usa
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| Posted: Wed Mar 02, 2016 7:48 pm Post subject: |
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A new wrinkle. Now the lip sync is off on SOME channels on my DISH receiver. Weird.
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