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Main system control memory IC fault. This is a very small IC; have 8 solder terminals, and can be located very near to the main system control-chroma IC. Check and replace it. Be sure to replace it with the same number printed on it; in all respect. Otherwise, it won't go. http://electronicshelponline.blogspot.com/
The fact that there is a horizontal line on the screen tells you that all circuits are in operation except the vertical circuit , The virtical IC is probaly shorted or the reisitor that supplies voltage for the fly back is open in addition the negative feerback from the signal processor IC can be open also which can cause a horizantal line .You will have to check all dose circuits to seewhat is causing the line
According to the system the problem in your projection is convergence and the solution is to replace the IC STK's.The part Number is CZ01341. Change the IC STK both and your TV work fine again.And for parts please see the link below.
There is a problem with the vertical circuit. Many times it is the vertical IC. This is a small flat IC attached to a heat sink. It may be merked LA7838 or something similar. You ca try resoldering the pins as a bad connection can also cause this. If that fails, replace the IC.
Keep us posted,.
The convergence IC`s board location are IK 04 & IK 05. Looking from the back of the TV they are mounted to a large finned aluminum heat sink on the right side of the chassis. The origional part (stk 392-110) can be substituted with an equivalent but higher powered IC (stk 392-180) , that is 180 watt instead of 110 watt chip. Do not use generic IC`s! Purchase origonal Sanyo chips only for best results. Replacement of the chips alone may not cure your problem if there are dammaged resistors caused by the origonal chips. Check the standing resistors on the opposite side of the heat sinks for proper value. RK42(2.2), RK46(1.5), RK58(3.3), RK52(1.8), RK50(2.2), RK54(1.5). All of these low ohm resistors are rated at 1 watt. If you encounter a bad resistor you must replace with the same exact value. Close is not good enough. This should fix your set. Do not buy a policy you have a good TV. Be sure to use a liberal dose of heat sink compound when insatlling the new chips, and clean off the old crusty stuff.