Re[3]: Convergence problems on AV-48WP30

Don

Sounds like one of the 1 watt resistors in the yoke return circuit is out of tolerance.

Eric

Reply

• Re[4]: Convergence problems on AV-48WP30 Jim Stohlmann - 27th Sep 2006 0:06
  Hi, I have the same convergence problem on my AV-48WP30. I was hoping I could get a copy of the schematics. Thank you, Jim
  
  
  • Re[5]: Convergence problems on AV-48WP30 Eric - 27th Sep 2006 3:21
    Sent the instructions to you. Eric
    
    
    • Re[6]: Convergence problems on AV-48WP30 Brian - 17th Nov 2006 8:15
      Eric, I have the same problem w/ my AV-48WP30 could you please send me the manual/ schematic. Thanks in advance.
      
      
• Re[4]: Convergence problems on AV-48WP30 Trevor - 11th Oct 2006 2:16
  Eric, I see you have some solid advice. I checked on the internet about the convergance problem with my JVC AV48WP30, ordered two new chips STK-392150 to replace the 110 and it still has the same problem. The red is off, I tried to allign with the remote after pressing the white button on the convergance board but the resd does not move side to side, can you help. Trevor
  
  
  • Re[5]: Convergence problems on AV-48WP30 Eric - 11th Oct 2006 3:41
    There are six 1 watt resistors in the convergence yoke return circuits. Check them. In your case where the red will not adjust side by side (top to bottom) pay particular attention to R842 (2.2 ohm 1 watt). Eric
    
    
    • Re[6]: Convergence problems on AV-48WP30 Trevor - 11th Oct 2006 15:43
      Thanks Eric, like others have said, you are the man. I will follow up on your tip and thanks for the diagram. Trevor!
      
      
• Re[4]: Convergence problems on AV-48WP30
  Barry
  - 13th Nov 2006 2:49
  I am assuming I have the same problem but maybe a little worse.
  
  I have the red and blue crosses which line up fine, I now have green ones the are in an arc across the top and bottom of the picture area. There is no green adjustment so I assume it is chio related. The TV actually did this in the middle of watching a show. Any help would be appreciated.
  
  
  • Re[5]: Convergence problems on AV-48WP30 Eric - 13th Nov 2006 14:18
    You didn't post an e-mail address so I can't send you anything, but read the following. Check/replace IC804 and IC805 on the Convergence PWB. It is wise to upgrade to two STK392-150. They will run a lot cooler than the STK392-110's presently installed. Be sure to replace them both. Also, check the 6 one watt yoke return resistors. If you don't have an ohmmeter at least check for dark colored bands on the resistor's body. These resistors have been known to open or increase in value. Remember that the convergence pwb is removed from the front of the set. Also, the ribbon cable that runs from the convergence pwb to the convergence osd pwb is removed from the convergence osd pwb NOT the convergence pwb. It is soldered onto the convergence pwb and trying to forcefully remove it will cause you much grief. Also, do not operate your TV with the rear cover removed. There is a bulletin from JVC about this. Good Luck, Eric
    
    
    • Re[6]: Convergence problems on AV-48WP30 Barry - 14th Nov 2006 14:31
      Sorry I forgot the email address. Thanks for the help. Do you have schematics for this TV? Thanks again.
      
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    • Re[6]: Convergence problems on AV-48WP30
      Mike
      - 5th Nov 2007 18:59
      My green is all messed up as well. Just happened - right after the earthquake so I thought that something shook loose, but... I, like all the others, would greatly appreciate all the info (manuals, instructions, etc.) on repairing the convergence problem on our AV-48WP30. This is actually the only problem we have had with our set since we bought it many years ago (2000/2001??).
      
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