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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Tue Nov 10, 2009 3:19 am Post subject: new hv leads for nec tube swap? |
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I bought a PG+ last week and it came with a box which had a set of tubes, and 3 new hv leads. THe connectors for leads aren't identical to the existing NEC connectors, but when testing they clip in fine. Do I need to only use NEC HV leads or will these replacements serve their purpose?
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Tue Nov 10, 2009 4:49 am Post subject: |
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So....you're asking if unknown leads, which you haven't provided any pictures or info about....
...will stop 32kV leaking and killing your projector?
Yeah, whatever, they'll be fine. Sony ones would work too - just wrap the connection in duct tape. Or maybe a spark plug lead from car. It's all good.
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Tue Nov 10, 2009 6:37 am Post subject: |
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I'll post pics of both leads...they both have 2 small leads that clip into the opening very securely. It doesn't seem to me like it would be a big deal, but if it is...well, it is!
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Tue Nov 10, 2009 7:20 am Post subject: |
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You didn't even say which end you are talking about....
And it is a big deal.
A mate's XG was killed due to a badly siliconed lead (not original) at the bell, the arc took out the deflection board.
I've seen the arc jump about 50mm. It's scary.
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Tue Nov 10, 2009 8:30 am Post subject: |
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Hopefully I can figure out how to get the pic from my new phone to here...damn technology!
I will say the condition of the new leads is excellent. The circular end is more robust than the old originals...and the included silicone is exactly what was on the original tubes. I think I'd prefer to use these leads....plus, if I can't use these leads, I will have to splice one of the older leads. Plus, the older leads aren't in perfect shape in terms of the circular end...a couple of nicks etc.
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Tue Nov 10, 2009 9:43 am Post subject: |
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Which circular end? They are both circular.
Splice?
Why would you need to do that? You NEVER need to do that. It's much safer to replace/reuse the whole lead, it's not difficult.
Why do you need to do this? You give us half the information then ask for advice...
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Tue Nov 10, 2009 4:33 pm Post subject: |
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if you look at the pics of the hv lead removal here....
http://www.curtpalme.com/HV_Lead_Removal.shtm
The replacement hv lead that I have appears to be exactly like this one.
Again, it fits tight and the suction cup ends are perfect and more robust that the existing ones. I took a nick out of one when removing it from the tube, so it would be my pref to use the new hv leads.
The wires were clipped on the replacement tubes, and one of the existing wires in the projector was clipped too...so at least one splice will have to be done. I can splice it as per curt's procedure as we have an electronics area at work and have all the necessary equipment to get it done.
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Tue Nov 10, 2009 7:15 pm Post subject: |
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| Mark_A_W wrote: |
Splice?
Why would you need to do that? You NEVER need to do that. It's much safer to replace/reuse the whole lead, it's not difficult.
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Absolutely and completely second this statement.
Splicing HV leads is not a good practice.
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Tue Nov 10, 2009 7:18 pm Post subject: |
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| benareeno wrote: | if you look at the pics of the hv lead removal here....
http://www.curtpalme.com/HV_Lead_Removal.shtm
The replacement hv lead that I have appears to be exactly like this one.
Again, it fits tight and the suction cup ends are perfect and more robust that the existing ones. I took a nick out of one when removing it from the tube, so it would be my pref to use the new hv leads.
The wires were clipped on the replacement tubes, and one of the existing wires in the projector was clipped too...so at least one splice will have to be done. I can splice it as per curt's procedure as we have an electronics area at work and have all the necessary equipment to get it done. |
The replacement HV leads shown in that procedure happen to be for a Sony projector, but only during the removal pictures, the leads shown in the replacement pictures are for a Marquee. In my experience, Barco and Marquee leads are interchangeable, all others are brand specific in order to fit into their HV splitters...
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Tue Nov 10, 2009 8:10 pm Post subject: |
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What plug is on the other end of the replacment lead?
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Tue Nov 10, 2009 8:51 pm Post subject: |
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The identical boot that is on the NEC leads...
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Tue Nov 10, 2009 8:55 pm Post subject: |
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Basically, I've tested the tube end, and it fits snug....the boot end is identical to the existing NEC leads...I can't quite think of what the issue could be. Sure, they're not the original NEC leads, but they are HV leads that have 2 clips at one end and the boot connector at the other.... and as I mentioned earlier, they came with the exact same silicone that is on the tubes to begin with.
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Tue Nov 10, 2009 8:57 pm Post subject: |
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Yep, should be fine.
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Tue Nov 10, 2009 9:48 pm Post subject: |
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If the ends which connect to the HV splitter are exactly the same as the ends on the original NEC leads, that would indicate they are leads made for NEC's I would think.
Are the new leads sleeved like the original ones are ?
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Tue Nov 10, 2009 10:22 pm Post subject: |
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yes...they are sleeved...identical to the NEC.
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Fri Nov 13, 2009 5:17 am Post subject: |
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Intersting...I swapped in the newer G & B tubes....the image on those 2 tubes is larger than the red. I guess I have to swap in the newer red as well??
I would think this is likely the new HV leads that are responsible for the bigger image? Any thoughts on that??
With the newer tubes, I get a proper H size at around +40 vs +80 or so for the red...so those 2 rasters are a fair bit bigger.
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Fri Nov 13, 2009 5:40 am Post subject: |
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Anyhow, I'll be putting in the newer red with newer hv lead tomorrow night...I think this should do it. But if not, I'll be looking for some answers 
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Fri Nov 13, 2009 8:38 am Post subject: |
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No, it's not the HV leads.
Your deflection coils are too far back.
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Fri Nov 13, 2009 4:14 pm Post subject: |
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I thought of that...but visual inspection would say otherwise...
I'm replacing the red tube tonight...I have a feeling it will be the right size after I'm done.
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Fri Nov 13, 2009 4:21 pm Post subject: |
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the deflection coils are different though...but they're up as far as they can go. I guess that's the issue...
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