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Revox
Joined: 13 Feb 2008
Posts: 158
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| Posted: Mon Dec 20, 2010 5:50 pm Post subject: Barco 701 HV Down - Problems |
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Hi, as a christmas present, i got a Barco 701 HQ Projektor.
The Problem is that the HV LED light and i do not hear the typical "brrrrzzzz" of the HV voltage.
So in the moment i am searching for a service manual to have some ideas of searching.
What parts do often fail?
What i have done:
When i pull out the Quadropler (the big block in the powersupply) the LED did not whent to red.
When i pull out all the tube plugs, there is no difference.
Greetings from Berlin, Stefan
Last edited by Revox on Mon Dec 20, 2010 6:03 pm; edited 1 time in total
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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 Dec 20, 2010 5:55 pm Post subject: |
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Is the red HV holddown light on on the front of the set?
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Revox
Joined: 13 Feb 2008
Posts: 158
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| Posted: Mon Dec 20, 2010 6:02 pm Post subject: |
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Jep!!
It belongs only of when i pull out the Quadrupler (the box on the front left side).
Sorry i did a writing mistake in the first post.
Do you have a service manual for me?
The owner said, that the Barco has run 18000 ours but without tube wear on red and green, strange isn't 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 Dec 20, 2010 6:10 pm Post subject: |
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It is most likely a bad quadrupler. No way to test them short of swapping another one in.
A quad from a Barco 800/801/808 will work electrically, but it won't fit into the 701. I do have some quads coming in sometime in January, but they will be $250-350 each as they are getting impossible to find.
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Revox
Joined: 13 Feb 2008
Posts: 158
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| Posted: Mon Dec 20, 2010 6:13 pm Post subject: |
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That are bad news.
What do you mean with "No way to test them short of swapping another one in".
-> The only way to test is, put a newone in?
Stefan
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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 Dec 20, 2010 6:18 pm Post subject: |
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Yes, there is no way to measure if a quadrupler is bad, you'd have to get another one and put it into the set, or take the one out of the 701 and put it into a working BArco.
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Revox
Joined: 13 Feb 2008
Posts: 158
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| Posted: Mon Dec 20, 2010 6:31 pm Post subject: |
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Got a photo for you!
Do you think it is possible to Recap the Quadrupler and fill it with silicone?
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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 Dec 20, 2010 6:33 pm Post subject: |
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You can try it, I've never done it.
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Revox
Joined: 13 Feb 2008
Posts: 158
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| Posted: Mon Dec 20, 2010 6:55 pm Post subject: |
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The Problem is, that its hard to get those caps out.
Do you have a Chematic for the Quadrupler?
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Revox
Joined: 13 Feb 2008
Posts: 158
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| Posted: Mon Dec 20, 2010 7:23 pm Post subject: |
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Oh, i damaged the transformer.
So i need defintivly a new quadropler or some second try to dismount it.
Do anyone next to germany has one?
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