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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jul 14, 2011 2:00 pm Post subject: Sony 1272Q - Convergence wont stay steady |
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My friends 1272Q is starting to show its age I beleive, and its time it gets some help if its possible. The convergence on his 1272Q doesnt hold for very long, after an hour of being on the convergence will shift just enough on the tubes that it makes the image blurry.
My friend doesn't know how to reconverge it himself, and I can only do that so many times before we both have to realize its the projector and needs help.
What particular board would be the cause of this? Last time I had a look at the convergence board on it I don't beleive it had anything that was replaceable/repairable..
Any thoughts and suggestions are welcome, maybe all it needs is a little love from a 357 Magnum 
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rosenbush
Joined: 14 May 2010
Posts: 94
Location: Brownsville Texas
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| Posted: Fri Jul 15, 2011 1:34 pm Post subject: mmm.. |
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I was suffering the same issue. I don't think will be the same problem, but in my case, one of the adjustments was to close to the limit, after a day or two from adjust, I need to readjust again, and again, and again. What I did, is reset all the values (zone, pincushion, etc) Re-adjust the lenses, specially convergence, so the electronic adjustment wont be to far from the middle value. Problem solved!. Just remember to adjust when the CRT is warm. Hope it helps
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Jul 15, 2011 4:47 pm Post subject: |
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Hmm, never thought about that, I'll have to check the settings on it when I'm over there next time, thanks rosenbush!
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sat Jul 16, 2011 10:29 am Post subject: |
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These projectors are SUBSTANTIALLY more reliable than you seem to believe, and will more than likely easily outlive your NEC.
If its drifting that much in warmup, for 1 it shouldve been converged AFTER it was warmed up to OPERATING temp, so however long this may take, i wouldnt think it should be one hour, but it SHOULD be up to stable temp before you set the convergence.
I would think the issue likely some failing components that are either coming good as the unit warms up, or going abit iffy when it gets hot.
Clean it out, get all the sh*t out of there, cause if its choked up with garbage from lack of maintenance, that will contribute to exactly what you describe. Make sure its getting good air flow, cause if its not, itll run hot, and itll end up f***ed.
These lower order Sony projectors are pretty tough rigs, they will take a servere beating for a long time compared with alot of the newer efforts.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Sun Jul 17, 2011 2:23 pm Post subject: |
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| CasetheCorvetteman wrote: | These projectors are SUBSTANTIALLY more reliable than you seem to believe, and will more than likely easily outlive your NEC.
If its drifting that much in warmup, for 1 it shouldve been converged AFTER it was warmed up to OPERATING temp, so however long this may take, i wouldnt think it should be one hour, but it SHOULD be up to stable temp before you set the convergence.
I would think the issue likely some failing components that are either coming good as the unit warms up, or going abit iffy when it gets hot.
Clean it out, get all the sh*t out of there, cause if its choked up with garbage from lack of maintenance, that will contribute to exactly what you describe. Make sure its getting good air flow, cause if its not, itll run hot, and itll end up f***ed.
These lower order Sony projectors are pretty tough rigs, they will take a servere beating for a long time compared with alot of the newer efforts. |
I don't question the sonys reliability, its almost 20 years old and still works without a hitch.
The projector was properly warmed up before it was setup, it has had regular maintainence and been cleaned out with an air compressor almost monthly. It gets more attention than my NECs ever do (but they don't have issues  )
The problem I think this particular 1272Q has is the previous owners, it was pretty filthy when I found it for a whopping dollar, and the lenses were so scratched up they had to be replaced. I wont get into the rest of the details of the case and electronics...
I think the projector was just abused to the point that something is indeed going out of tolerance because when it warms up it does converge, but then after an hour or 2 it starts to lose its convergence.
As I said before, it was a "by the book" setup, and other than having a stable and easy to view image, it works fine.
So yes they may be reliable in the sense that it still works without error codes or any of that, heck it outlived my 9PG Plain, but that machine looked like it was thrown in a musty old basement corner sat to rust. It needs some major work. Now if you are talking more in comparison to a machine thats been properly treated such as my NEC XG and my 9PG Xtra, I don't think there is any comparison for reliability or overall image quality. I've never had drifting issues on my NECs, much less any issue after getting them setup.
I think the Sony is just on its last leg of doom 
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Mon Jul 18, 2011 8:15 am Post subject: |
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| Jeremy112 wrote: |
The problem I think this particular 1272Q has is the previous owners, it was pretty filthy when I found it for a whopping dollar, and the lenses were so scratched up they had to be replaced. I wont get into the rest of the details of the case and electronics...
I think the projector was just abused to the point that something is indeed going out of tolerance because when it warms up it does converge, but then after an hour or 2 it starts to lose its convergence.
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Aha!! My point exactly here, at some point, its been mistreated you believe? For $1 its the next best deal behind my Sony 1001 i got for nothing.
Something in there is getting hot and that will likely be why its losing its convergence, and i think you should tell them to stop using it and check a few things out before it gets worse.
| Jeremy112 wrote: |
So yes they may be reliable in the sense that it still works without error codes or any of that, heck it outlived my 9PG Plain, but that machine looked like it was thrown in a musty old basement corner sat to rust. It needs some major work. Now if you are talking more in comparison to a machine thats been properly treated such as my NEC XG and my 9PG Xtra, I don't think there is any comparison for reliability or overall image quality. I've never had drifting issues on my NECs, much less any issue after getting them setup.
I think the Sony is just on its last leg of doom |
Ive got a mate that has 4 NECs, he is on this forum and will likely read this, and HE ALSO STORES HIS IN A PLACE THAT IS NOT SUITABLE DUE TO BEING TOO BLOODY WET!!!! Add to this fact he has four of them, 1 of which is very poorly set up and gets almost no use, the other 3 which are indeed going to waste due to their current storage and never get used. Despite numerous attempts, he wont sell me any of them, however if he doesnt do something with them soon they will likely end up totally useless and full of corrosion.
I am not questioning the image statement you made, youre dead right, the NECs smoke MOST CRTs out there in this respect, but the earlier Sonys are tough as nails. If an NEC lived the same life that Sony has, it would never have been as reliable.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Mon Jul 18, 2011 4:18 pm Post subject: |
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its a shame to hear your mate won't let you get those machines off him. I would much rather see something I own that I don't use at all to go to someone who will use it and enjoy it! He will be wondering what to do with 4 corroded boat anchors otherwise.
In the state I live in, humidity is the enemy, infact its so humid out right now you can go swimming in the air! Thank god for central air.
When I store something I make sure that if it is an item that will corrode or rust, that its properly stored away with plastic to protect it from dust and other stuff. I keep anything I store in my basement which is always cool and theres a dehumidifier running to keep it nice and dry.
I'm heading over to my friends house tomorrow to help him setup some new TVs he got for his garage (which is more like a game room with carpet and black walls) so when I go there i'll have another look at the old beastly Sony. I might go ahead and have him and I reset the thing up.
Honestly I think part of "his Sonys problem" is him. He is expecting it to be nice and sharp like a direct view CRT or LCD, or his old cheap ass Optoma DLP projector he had (didn't take long for that thing to get a horrible picture on it at all), and as I have explained to him up and down and over and over, that the Sony simply isn't capable of being razor sharp. I then remind him he paid a massive $1 for the projector and $20 in gas to go and get it, and he calms down again..
If I get my 9PG Plain back up and running I'm going to try selling it to him to replace the Sony. Since he's never complained about how my NECs look, I assume he wont complain about the 9PG 
Ahhh the joy of CRT education!
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When I'm asking for a Model number, that doesn't mean I'm asking for a nude photo with your number on it
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Tue Jul 19, 2011 1:59 am Post subject: |
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I just got back from my friends house with the 1272Q, and Rosenbush, case, you were both right.
The projector was WAY off kilter as far as mechanical setup went, which explains why some of the electronic settings were maxed out. We raised the projector up 3 more inches, moved it to the right about 6 more inches and WOW, almost every setting is spot on (0 setting is 127) and not only are the electronic settings almost dead on, the sharpness of the image improved dramatically.
I have to admit the initial setup we did must have been a quick one, because the image was way off the screen once we got it positioned correctly and mechanically setup correctly.
Watched it for about 2 hours after I got done with the settings with my friend and him and I both agree that was the issue, the convergence didn't shift a millimeter!
The only thing that could make is machine any better would be new tubes (the green and blue have some wear which was noticable mainly on blue skies and white screens), but other than that, I have to envey the simplicity of setting his up over my NECs.
Getting his so close to perfect makes me that much more anxious to get my XG hung on the ceiling and setup. I am quite jealous of the IQ his 1272Q has over my Sony VPL-VW50. Just an absolutely stunning image!
Thanks for the heads up on the settings!
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Tue Jul 19, 2011 7:19 am Post subject: |
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Yep, for a Sony of this vintage to work for that long and then show signs of playing up, there was always going to be something not done right.
Glad you got it all up and running!! Even more glad it wasnt killed by this poor setup!!
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