Re: Convergence problems on AV-48WP30

Excellent diagnosis by Carlos. IC804 controls red convergence. But in time IC805 will also fail as well. Replace them both with STK392-110. Also, check for cold solder joints in the vicinity of these ICs. If you want a schematic for this unit e-mail me.

Eric

Reply

• Re[2]: Convergence problems on AV-48WP30 PJ - 3rd Oct 2007 1:10
  Hi, my problem seems to be a little worse. I have no experience with tv's but a little with computers. my convergence was off for about 3 months, but i was able to fix it.After three months the, the screen completely went out with different color lines. I have narrowed the problem down to what i think is the convergence board. The screen completely going out happens every time we leave the tv off for more than an hour and i am able to fix it by wiggling this board(kinda stupid but it works). Thanks
  
  
• Re[2]: Convergence problems on AV-48WP30
  Lee
  - 6th Oct 2007 14:42
  Hi Eric,
  could you please send me the schematics for the JVC 48WP30 TV?
  as I am having trouble with the convergence I had the same trouble a year ago and paid a tech to fix it now I am having trouble with the blue and green color and am unable to adjust it the convergence I would like to fix it myself also would you happen to know where i could purchase the parts to fix?
  any help would be greatly appreciated
  Lee
  
  
  • Re[3]: Convergence problems on AV-48WP30 Eric - 6th Oct 2007 18:55
    Send me your email address.
    
    
    • Re[4]: Convergence problems on AV-48WP30 Lee - 7th Oct 2007 1:06
      heres my email address jabird1984@wmconnect.com regarding convergence problem for JVC AV-48WP30 Thank you!
      
      
• Re[2]: Convergence problems on AV-48WP30 anthony - 6th Dec 2007 2:07
  hey eric i ordered the parts and had them installed but i can not adjust the green aspect i have blue and red down but the green just seems over powering if u have any advice i would love the input?
  
  anthony
  
  
  • Re[3]: Convergence problems on AV-48WP30 Eric - 6th Dec 2007 4:41
    The green is not adjustable, only the red and blue. Did you check the one watt yoke return resistors?
    
    
    • Re[4]: Convergence problems on AV-48WP30
      James
      - 28th Feb 2008 2:00
      Hi Eric, I have e-mailed you to your aol account. If you could help me out with the diagrams as well I would apprecaite it. I'm not sure if I have the skill set to do the job but I have a couple of buddies who do so if they can help me out I wouldn't mind saving some dough. Thanks, James
      
      
• Re[2]: Convergence problems on AV-48WP30 josef childebrandt - 11th Dec 2007 18:48
  i have this same JVC TV and the red convergence is out! dips on top and bottom of screen. Can i fix this my self? Do you have a diagram for me? i was told i should change both (2) convergence chips .Anything else, and do i just take off the back!
  
  thanks josef
  
  
• Re[2]: Convergence problems on AV-48WP30
  Malcolm Dellow
  - 24th Dec 2007 0:43
  Eric: have been reading about all the convergence problems with the JVC AV-48WP30. Unfortunately after 4 years the red convergence problem on mine has appeared. Can you please email me the schematics for the affected area so I can replace the STK chips and any affected resisters etc.
  Thanks and regards: Malcolm
  
  
• Re[2]: Convergence problems on AV-48WP30 robin tabb - 26th Dec 2007 5:07
  can you send me the scematic for replacing this circiut please .
  
  
• Re[2]: Convergence problems on AV-48WP30 mike - 5th Jan 2008 0:12
  nedd info on convergance and service man
  
  
  • Re[3]: Convergence problems on AV-48WP30 Rob - 9th Mar 2008 4:53
    i also need info on convergance and service man
    
    
• Re[2]: Convergence problems on AV-48WP30 CARLOS - 15th Mar 2008 1:21
  HI ERIC,
  
  I WAS READING YOUR INFO ON THIS FORUM. IF YOU STILL CAN, I WILL TAKE YOU UP ON YOUR OFFER
  OF E-MAILING ME THE SCHEMATIC FOR THE SUBJECT T.V. I ALSO HAVE A CONVERGENCE ISSUE.
  I CANT ADJUST THE BLUE UP OR DOWN, HOWEVER, IT WILL ADJUST LEFT AND RIGHT. PLEASE E-MAIL
  BACK IF YOU CAN ASSIST. THANKS IN ADVANCE.
  
  
• Re[2]: Convergence problems on AV-48WP30 pam - 9th Jun 2008 0:57
  I am also having trouble with my blue convergence. I would appreciate it if you would e-mail me a copy of the servoce manual and schematics.
  
  
• Re[2]: Convergence problems on AV-48WP30 ron - 22nd Jul 2008 13:58
  yes i would like a schematic of this tv thanks ron