hi guys
I would like to thanks very much to elctronicm for all the advice given since 8-18. your help was essential. with out it the set would have been just a dead set.
thanks to wa2ise. I will look for the computers.
to the administrator, with out this site I will lost. tomorrow a proper set up of the set specially the vertical linearity, and to install the new thermistor.
the T2 transformer was the culprit. I love this hobby.