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jaredjaric
Joined: 05 Jun 2007 Posts: 228 Location: Philippines
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Link Posted: Fri Sep 11, 2020 4:39 pm Post subject: wanted : splitter and quads for cine9 |
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Hope to hear from you guys.
Cheers,
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Dancrt
Joined: 16 Sep 2017 Posts: 69
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Link Posted: Sat Sep 12, 2020 4:14 am Post subject: |
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I belive curt has them for sale
The one in mine at the moment is from curt
Previous one was a new one lasted 500 hours when pulled apart
One capacitor had two holes blown out the side of it !!!!
As a experiment I’m going to try and rebuild a failed one as
I’ve seen a rebuilt one work No idea who rebuild it
But fix anything website a guy there said he has done it as well
No idea for the splitters
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jaredjaric
Joined: 05 Jun 2007 Posts: 228 Location: Philippines
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Link Posted: Tue Sep 15, 2020 5:20 pm Post subject: |
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tried it once , but did not work on my PJ.
still have some extra philips diodes and 10kv caps, will try and rebuild again.
I am thinking someone either in the US or China is already rebuilding these.
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Dancrt
Joined: 16 Sep 2017 Posts: 69
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Link Posted: Tue Sep 15, 2020 7:40 pm Post subject: |
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Ah I bought 30kv diodes and caps because
that’s what guy on fix anything said he uses
Any idea what the actual voltage is ?
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Dancrt
Joined: 16 Sep 2017 Posts: 69
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jaredjaric
Joined: 05 Jun 2007 Posts: 228 Location: Philippines
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Link Posted: Wed Sep 16, 2020 4:14 pm Post subject: |
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actual barco quad uses philips diodes rated at max 19kV only, and vishay caps were rated at 10kV only.
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Curt Palme CRT Tech
Joined: 08 Mar 2006 Posts: 24301 Location: Langley, BC
TV/Projector: All of them!
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Link Posted: Wed Sep 16, 2020 4:24 pm Post subject: |
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The problem isn't finding the correct parts, it's the crucial resealing of the quads. The closest I ever saw that could have been successful is putting the quad into a vacuum, so it pulls out all air bubbles from the poured silicon. Air bubbles cause arcing within the quad, and almost immediate failure.
The ones potted in a vacuum lasted about an hour before they died too.
I once tried emailing NTE to see if they would custom build quads, but unless I ordered 500, they weren't interested.
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jaredjaric
Joined: 05 Jun 2007 Posts: 228 Location: Philippines
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Link Posted: Wed Sep 16, 2020 4:43 pm Post subject: |
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Yes ,
Tried to do one many years ago,
had some arcing , it came out of those screws that connects to the PJ chassis.
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jaredjaric
Joined: 05 Jun 2007 Posts: 228 Location: Philippines
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Link Posted: Wed Sep 16, 2020 4:45 pm Post subject: |
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I am looking into making a splitter also, need to grind through the epoxy resin to see the cap values and resistors.
Can not find the old thread about splitters.
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Dancrt
Joined: 16 Sep 2017 Posts: 69
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Link Posted: Wed Sep 16, 2020 8:27 pm Post subject: |
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Good info
We should post pics of our efforts
I bought a vacuuming chamber
Maybe I’ll not replace those screws
And zip tie it in ?
Any ideas why the ones failed curt air bubbles ?
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Curt Palme CRT Tech
Joined: 08 Mar 2006 Posts: 24301 Location: Langley, BC
TV/Projector: All of them!
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Link Posted: Wed Sep 16, 2020 9:12 pm Post subject: |
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Likely age, really. 34Kv over a 20-30 year period isn't a good thing. Also, the later revision quads (762XXX and 763XXX series) used a different potting compound that would go conductive over time. Electrohomes did the same thing, NECs and Sonys, rarely compared to Barco.
I've had quads and splitters crack from heat, causing massive arcing everywhere. Always fun to see!
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Dancrt
Joined: 16 Sep 2017 Posts: 69
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Link Posted: Wed Sep 16, 2020 10:59 pm Post subject: |
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Wow that dosnt sound pleasant
The quads I’ve pulled apart both have magnets broken on transformer
I only assume this isn’t cause of failure but tempterture
Apparently but my googling as long as all bits are there
The magnetic 🧲 field will still be ok and should work.
Curt got any failed ones You want to get rid of?
Do the spitters age as well ? Haven’t had one go yet
But only had my barco for 1.5 years 550 hours
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