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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 12:55 am Post subject: Pis of re-tubing my Sony 1252Q |
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Thought I would share these. Even tough it seemed a bit daunting at first, putting in the new tubes turned out to be a fun project. If the PJ hadn't worked after what I had done then not so fun.
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 12:57 am Post subject: Re-tubing |
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Nice and shiny!
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 12:59 am Post subject: re-tube |
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What a ball buster to get this down without adding more repair work. it was more of a controlled drop than anything.
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 1:00 am Post subject: re-tube |
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No wonder I've been sneezing.
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 1:03 am Post subject: re-tube |
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I have to admit when I took off the covers I got intimidated again. Fortunately the manual shows how to remove what to get out the tubes out. The chassis looks like a nightmare but it is made to be serviced with very few screws need removal (except the video boards and heat sinks).
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 1:06 am Post subject: re-tube |
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I took pictures of everything I would be taking apart so that I had a handy reference. Especially handy when dealing with cables and such. This is the green gun.
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 1:08 am Post subject: re-tube |
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Lenses' out. I should have done this before I took the PJ off of the ceiling. It takes about 35lbs off.
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 1:10 am Post subject: re-tube |
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Getting my nerve up to disconnect the yoke harnesses from the tubes.
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 1:11 am Post subject: re-tube |
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Don't get the colors mixed up.
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 1:13 am Post subject: re-tube |
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They follow the same logic on all three tubes.
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 1:16 am Post subject: re-tube |
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Tubes are out. I got really nervous at this point. I wasn't sure how badly I could screw this up but there looked like a lot of opportunity. I was worried I'd break something trying to remove the yoke assembly. The old tape didn't want to let go. But it is not quite as fragile as I thought and I was able to persuade them to come off.
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 1:18 am Post subject: re-tube |
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Yoke assemblies transferred to the new tubes.
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 1:19 am Post subject: re-tube |
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Tube assemblies re-installed.
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 1:22 am Post subject: re-tube |
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Back on the ceiling. Not having the lenses installed help tremendously, although it adds difficulty putting the lenses in.
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 1:23 am Post subject: re-tube |
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Raster adjustment.
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Sat Feb 21, 2015 1:28 am Post subject: re-tube |
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Lenses installed. Now the real fun begins. I used the CRT setup video to go through my PJ. I did OK but feel like it could be better. But overall I'm really happy with the added clarity and brightness. It perked the ole girl up a bit for not much money at all. Consider doing it if you can get a new set of tubes at a good price. It makes a worthwhile difference.
Best
Tim
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sat Feb 21, 2015 11:46 am Post subject: |
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Well done mate, bet its much sharper now 
_________________
Barco Cine 9, ,Sony VPL570ES 4K SXRD, 135" OZ Theatre Majestic 16:9 screen, Denon X6700in preamp mode, 2x 7ch Tonewinner amps, 2x Tonewinner 15" subs, 2x 10" subs, 7.2.6...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 7.1...
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Mon Feb 23, 2015 6:28 pm Post subject: |
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Yes, much sharper and a bit brighter.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Mon Feb 23, 2015 6:58 pm Post subject: |
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nice work 
the very first CRT projector I ever worked with and setup was a 1272, had I replaced the tubes as you did, I'm sure it would have looked a lot better. I only paid a $1 for it though so I couldn't complain, it was a really easy to learn projector and fun to use.
Enjoy your new tubes 
_________________
When I'm asking for a Model number, that doesn't mean I'm asking for a nude photo with your number on it 
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Audio_Geek_00
Joined: 07 Aug 2014
Posts: 82
Location: SF Bay Area
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| Posted: Tue Feb 24, 2015 10:52 pm Post subject: Thanx |
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1$? Good deal! Yah, as far as these projectors go they are pretty simple.
The only reason I would consider getting rid of this PJ is 4k. The tubes bought me a year or two until more content is available. Someone may get it for quite cheap at that point but until then it will get me through.
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