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JVC AV-56WP74 projection HDTV

 
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pdlcstll



Joined: 14 May 2007
Posts: 1
Location: TEXAS
PostPosted: Tue May 15, 2007 10:47 pm    Post subject: JVC AV-56WP74 projection HDTV Reply with quote
Can anyone help me with a convergence problem. I can adjust my red horizonatal convergence but the vertical will not. Has any one experianced this same or simular issue with the JVC AV-56WP74 Projection HDTV?
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minnie



Joined: 18 Aug 2005
Posts: 2880
Location: Hell
PostPosted: Tue May 15, 2007 11:34 pm    Post subject: Reply with quote
Replace convergence IC's, STK392-110's, check all resistors around them.
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snowking_141



Joined: 10 Feb 2007
Posts: 16
PostPosted: Tue May 15, 2007 11:51 pm    Post subject: Reply with quote
Let me know how it works for you.

I replaced my IC's because the red horizontal was all wavy. It fixed that but I had already mess with to much that I shouldn't have and when I tried fixing that I heard a pop and lost control of the vertical on the red I did find a bad resistor so I changed them all. I still can't adjust the vertical. So I guess if the IC's work for you I will buy more.
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minnie



Joined: 18 Aug 2005
Posts: 2880
Location: Hell
PostPosted: Wed May 16, 2007 11:29 pm    Post subject: Reply with quote
snowking_141 wrote:
Let me know how it works for you.

I replaced my IC's because the red horizontal was all wavy. It fixed that but I had already mess with to much that I shouldn't have and when I tried fixing that I heard a pop and lost control of the vertical on the red I did find a bad resistor so I changed them all. I still can't adjust the vertical. So I guess if the IC's work for you I will buy more.


PM me. Here's what I PM'd him:

"IC 804 & 805. Check R842 2.2 ohm 1 watt, and R846 1.5 ohm 1 watt. R842 is for the red horizontal adjust and R846 is for red vertical adjustment. STK392-110's come in it I put in STK392-180's, 11 watt vs 18 watts. These seem to puke after about 2 1/2 years. The board should be mounted behind the speaker grill and cover. Let me know."

I have never had a JVC kick my arse. I'll repost convergence IC guides again.
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