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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Oct 28, 2010 8:46 pm Post subject: I need 3 new 16v 3900uf BiPolar Capacitors.... |
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Where do I get them?? I am having a hard time finding them, any help is welcome 
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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: Thu Oct 28, 2010 11:24 pm Post subject: |
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Holy, what an oddball value. WHat's it out of?
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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Thu Oct 28, 2010 11:45 pm Post subject: |
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Connect two 8200uF 16V electrolytics + end to + end. Use the - ends for the 4100uF capacitor leads.
Scott
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Thu Oct 28, 2010 11:56 pm Post subject: |
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i think he needs 2 diodes as well
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Oct 29, 2010 4:34 am Post subject: |
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haha,  actually its 3 caps out of a Sony 1272Q, I've recapped the entire unit and am waiting on the last 17 caps, however I still need those 3.
Otherwise they have to stay in  and my capacitance tester doesnt go up past 1000uf 
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WTS
Joined: 08 Mar 2006
Posts: 1276
Location: Calgary
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| Posted: Fri Oct 29, 2010 1:03 pm Post subject: |
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You don't need to replace with exactly 3900/16, I'll assume it's in a supply circuit so anything close will be good, 4700/16 or 4700/25.
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Walter
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1031
Joined: 22 Mar 2006
Posts: 657
Location: Finland
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Oct 29, 2010 2:14 pm Post subject: |
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Well the problem with the 1272Q is that horizontally, the convergence will drift after a few hours, it will wander about an inch or so each way while its being used.
I figured since the unit is almost 20 years old, (and it looks like it was used), that it could use new capacitors. The guy that owns this thing is practically in love with it and doesn't want to get rid of it at all, so thats why I'm spending his money and my time on it 
I get the new HD8 Rev B Lenses today so hopefully when I put those on and fire it up it makes a small visual improvement on the focus, mainly around the edges.
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1031
Joined: 22 Mar 2006
Posts: 657
Location: Finland
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Oct 29, 2010 2:47 pm Post subject: |
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| 1031 wrote: | | Jeremy112 wrote: | Well the problem with the 1272Q is that horizontally, the convergence will drift after a few hours, it will wander about an inch or so each way while its being used.
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Just test to spray those caps wiht coldspray (when projector is warmed up) and see is convergence drifts.. iīll say that those caps are not culprit for that drift. |
So I shouldn't worry about those 3 caps then? And the problem wasn't finding the values, its finding them in Bi-Polar..
I will get a can of air since it sprays out ultra cold and try that out while its on.
Do you know what would be causing the drift then? The 2 convergence boards in it dont really have any capacitors, the main one I think has 3 small ones and thats it.
I assumed the problem was on either the H-Def board or the V def board since those 2 are huge on the 12xx series and the rest of them (as far as I am aware) dont really control convergence other than the point boards.
I hope I didn't waste my time putting the new caps in on those 2 boards. I mean, at the very least, I tested each old capacitor and also tested the new ones I put in it to find values as close as possible to what was in there.
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1031
Joined: 22 Mar 2006
Posts: 657
Location: Finland
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| Posted: Mon Nov 01, 2010 8:46 am Post subject: |
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| Jeremy112 wrote: |
Do you know what would be causing the drift then? The 2 convergence boards in it dont really have any capacitors, the main one I think has 3 small ones and thats it.
I assumed the problem was on either the H-Def board or the V def board since those 2 are huge on the 12xx series and the rest of them (as far as I am aware) dont really control convergence other than the point boards.
I hope I didn't waste my time putting the new caps in on those 2 boards. I mean, at the very least, I tested each old capacitor and also tested the new ones I put in it to find values as close as possible to what was in there. |
I did recapping thing back then when i had 1272 sony. Drifting was mostly coming from mechanical/magnet setup (if it was not done right) part of it was from heat variations (heat sinkīs and old paste between transistors/heatsinks) and recapping helped little also. Those Bipolars had no effect to hor. drift . Much can be done by cleaning all connectors with good contact cleaner and maybe adding some Stabilant 22.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Mon Nov 01, 2010 3:55 pm Post subject: |
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1031 thank you for your advice! Where do I pick this Stabilant 22 up?
I'll be doing the re-sinking of the chips too since you mentioned it, it does make sense! Especially since its as old as it is, it could probably use it 
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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: Mon Nov 01, 2010 3:58 pm Post subject: |
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I use www.caig.com. Love the stuff.
As for the bipolar part, based on many posts here, you won't have a problem finding that..
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dturco
Joined: 06 Feb 2009
Posts: 3778
Location: Eastern Shore Maryland
TV/Projector: Runco DLP VX-3000i Marquee 9500 parts doner
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| Posted: Mon Nov 01, 2010 4:42 pm Post subject: |
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| Curt Palme wrote: | I use www.caig.com. Love the stuff.
As for the bipolar part, based on many posts here, you won't have a problem finding that.. |
Yes you will... no you won't .... shut up .... who you tellin to shut up? Bite me... Where sweetie? your disgusting.... 
I"m hungry 
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1031
Joined: 22 Mar 2006
Posts: 657
Location: Finland
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Wed Nov 03, 2010 7:29 pm Post subject: |
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Well I decided to put the 1272Q together today and see how it works with where I'm at with it.
I have to say, THANK YOU DRAGAN! WOW is all I can say! The picture is MUCH MUCH MUCH sharper with the new HD8 RevB lenses over the original HD8s! I was SHOCKED when I saw how sharp the picture was. It now looks on par with my 9PG (Plain)!
I let it warm up so I could converge some sort of an image to see how stable it was.. So far there is much less jitter overall, a lot more stable than it used to be.
Since I've gotten it this far I'm not going to stop! I have ordered the remaining capacitors, and will finish with the thermal compound redos and cleaners when I get them.
So,... VERY VERY VERY HAPPY Best $1 projector EVER!!!!
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Wed Nov 03, 2010 7:53 pm Post subject: |
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| Nashou66 wrote: | Wait till you get HD-144/145 on it.
Athanasios |
One thing at a time  . After I get it all back into good working order, the owner is going to buy an HD Fury for it, so then I will schmooze him into HD-144/145s after that
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