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This is a comon problem
There are two large convergance chip's
the are failing .Replaceing them will
corect the problem . The chip range
in cost from 16,00-30.00 .There cheap,
so dont let the shop over charge you
for parts when and if you decide to
you need to replace both convergence ICs they are STK392-110 you can get replacment ICs at the following link with free instalation intructions with pictures. Here is the link. http://servicemanuals.vstore.ca/
you need to replace both of the Convergence ICs STK392-120 you can get replacement ICs at the following link, and they provide free installation instructions and free on line tech support.
Heres the link. http://servicemanuals.vstore.ca/
More than likely your akai has defective stk392-040 Convergence chips . it also may have open resistors generally 3.9 ohm flame proff. this board is attached to the top left looking from the back of the set it is screwed on by 1 screw black in the center . after installation this will probably half to be converged dinamically. which means you will half to get to the grid this is done by using the remote press mute 183 quicly to enter numbers on thew remote 2 to adjust red 4 to adjust blue horizonta 6 to adjustred vertical and 8 to adjust red vertical using center button to go up and down