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rf78801
Joined: 19 Jul 2008 Posts: 7
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Posted: Mon Aug 11, 2008 9:00 pm Post subject: JVC Rear Projection TV Alignment |
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JVC HV53 PRO
Seeming identical problem jkeisert described previously. As suggested by minnie, I've replaced the Convergence ICs (both). Unfortunately, it had no effect.
Am stationed overseas, no reliable electronic mx around here...anyone have any other ideas regarding this problem? Can send pics if it will help.
Thanks much. |
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minnie
Joined: 18 Aug 2005 Posts: 2880 Location: Hell
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rf78801
Joined: 19 Jul 2008 Posts: 7
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Posted: Wed Aug 13, 2008 11:37 am Post subject: |
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Minnie - afraid I'm not that knowledgable about which/where those might be. Have studied the schematic but it's not obvious to me. If I opted for board-level swapout, which one would you recommend I start with?
Thanks again. |
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minnie
Joined: 18 Aug 2005 Posts: 2880 Location: Hell
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Posted: Wed Aug 13, 2008 6:00 pm Post subject: |
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The board with the convergence IC's on it. |
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rf78801
Joined: 19 Jul 2008 Posts: 7
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Posted: Thu Aug 14, 2008 4:31 pm Post subject: |
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Okay, thanks very much. Is the power supply you mentioned also on that board? |
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minnie
Joined: 18 Aug 2005 Posts: 2880 Location: Hell
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Posted: Thu Aug 14, 2008 10:55 pm Post subject: |
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I'd have to see the service manual. If you have it, email it to me. |
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rf78801
Joined: 19 Jul 2008 Posts: 7
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Posted: Tue Aug 19, 2008 6:01 pm Post subject: |
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Hi Minnie. Sorry, all I have is the owners manual. Would it help if I emailed you a picture of the board?
Really appreciate your assistance, few options here. |
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minnie
Joined: 18 Aug 2005 Posts: 2880 Location: Hell
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Posted: Tue Aug 19, 2008 8:13 pm Post subject: |
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Look on the board. JVC usually puts the pert #'s on the board. |
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rf78801
Joined: 19 Jul 2008 Posts: 7
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Posted: Fri Aug 22, 2008 5:23 pm Post subject: |
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Will look for those part #s. How many bias resistors are there?
Also, ref this posting: www.pechorin.com/m/2006/05/06/JVC_HV53PRO-261008.html, describes a similar problem. Have you ever heard of these projection tubes needing fluid? How would one check to see if they are fully filled? I don't think that's the problem though as I've noticed that the tubes (all three) flicker irregularly every second or two. Problem affects all 3 tubes so I suspect it must be power related. Sound reasonable? |
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minnie
Joined: 18 Aug 2005 Posts: 2880 Location: Hell
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Posted: Fri Aug 22, 2008 6:27 pm Post subject: |
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Link is bad but, if they were low on fluid, the whole inside of the TV would be wet. There should be 6 resisters. R/G/B vertical, R/G/B horizontal. Usualy around 1/3.3 ohm. |
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