How do you correct convergence problems on a JVC av48wp30?

Answer 1

I'm in the process of repairing my red convergence failure on my JVC AV48WP30. The red convergence failure shows as a red "sag" or bow in the upper left corner of my screen, but could be blue or green in other parts of your screen depending on which convergence IC malfunctioned.

I'm not an expert, but from what I can tell if you have the sag of any color, one of two convergence IC's failed on the convergence board located in the front right cabinet portion of your TV (don't open the back of the TV).

The failure could have been caused by a faulty resister nearby. Look for smoked or burnt resisters near the 804 or 805 convergence IC's. The IC's themselves might be clearly labeled STK392-110, but you could upgrade to 150's or 180's for better heat tolerance. You may have to replace one or more resistors as well. Unplug the TV, open the front cabinet, desolder the existing IC's and replace. You could just swap IC's, resolder and power the TV on. If you notice a sag of a different color, now you've determined it was definitely a convergence IC failure. The IC's themselves ran me about $15 each from a TV repair shop. Call first to make sure they have them in stock.