Errrr this very embarrassing... I want to apologize to all of you if I made loose your time. And thanks to all for the replies.
Sugarland, you hit the nail, POKEY was the issue but not damaged just.... err.... I removed for resitting all chips and put it upside down ! XD
I realized while measuring Vcc to the chip, it seems that after removing it, something happened, I got distracted and by mistake I inserted it that way. I can't understand how it happened because i am very careful with those things, I even take pictures before removing just in case the socket is wrongly assembled from factory.
I turned it and runs perfect now, well, sometimes after being on a long time screen turns into red, maybe a component not working properly when it warms.
Also have to get a membrane keyboard, as it is crossing keys in rows 16 and 17 , with keyboard removed (crossing the pins of the connector directly) all keys work , so if you are selling one please, let me know.