I recently got a jvc 56wp30. I tried to adjust the convergence, but I only had two colors on the convergence adjustment screen, blue and I don't remember the other. It would adjust up and down, but not side to side and it was a few inches off. I read all the posts and decided I needed to replace the convergence amplifiers. I am a retired Navy Avionic tech and a very competent solderer. I ordered and replaced the parts, now I olny have blue on the convergence adjust screen. I have checked all of the other components on the board with a multimeter as well as I can without a schematic and they all seem fine. I have all of the colors on the TV, grossly out of convergence, but since they do not appear on the convergence adjust screen, I seem to have no way to solve the problem. As it is, the TV is virtually unwatchable. I have tried to locate the entire convergence board online, but have been unsuccessful. I have resoldered the amps a few times and even gone as far as putting the old ones back in to see what would happen. When I put the old ones in, the picture shrinks around the corners, but I still only have blue on the convergence adjust screen.

The soldering of ICS are very sensitive to static and heat,must be grounded ur self before even take the new ICS out and atempt to putting it in the pcb board,have to much heat in ur sodering iron too,could also will kill the ICS itself,must used a low wattages soldering iron too,for dealing with ICS.Buy another convergence kit to replaced those parts on the tv convergence board.Tries these 2 websites like Tvrepairworld.com,Tvrepairkits.com to buy a convergence kit.They have a whole convergence kit and also have a DVD disc tutoring u to do the job right.They're the professional dealing with this parts and been putting together for years.

If you have change the convergence IC's, and you are still having problems, then you need to check the resistors, on the board they will go up in value, and also replace the electrolytes caps and the will fix your problem. The only colors you can adjust is red, and blue, green is stationary.

Oh dear, sounds like you have taken on a difficult job.

There is only need for two colours to be adjusted as the third colour remains static. I am at a loss as to recomend what the problem is except when soldering/de soldering unless you are using a static sensitive iron and conform to static protection, you may find that you are putting faults on the new Ic's as you fit them.
You have to fit new Ic's without damaging them with static.
If you remove the convergeance panel from the TV, place it on a bench that is of the same potential as your iron, that is the only way to guaratee that there will be no static damage.
The Ic's used use CMos technology and their inputs are highly sensitive.
When you get your system back as it was the colour that does not move stays static. Say green as that is the commom colour.
Cover the blue gun with a piece of paper/card to block the light and set the Red to meet the Green. Then cover the Red and do the same with the Blue. Now the Blue is more difficult to do because people see Blue from a TV in a differen way.
New/replacement panels are probbably not available but check ebay for an old unit if the board becomes unserviceable.
I hope that helps.