Hi dear friend OM Klaus, good afternoon!
Thank you for your help.
Yesterday, Mr. Kaiser tried to rotate slowly the contrast adjustment potentiometer, but only square charachters appeared.
I think it is not the solution. I will ask to my friend Erhart to try again another time, but I suppose he will not take advantages.
I'm helping him (I'm trying to help him) because he would bring QCX on his vacation next January. We have probably a week to fix it.
I told mr Kaiser your email address (by qrz.com) and probably he can write you directly.
Let me thank you very much indeed to spend your time to help him. Of course, if the problem is bigger, don't hesitate to tell him you cannot help. There will be no problems.
I appreciate your friendship, thank you, Vielen Dank, lieber Klaus!
73 de IZ7VHF
Roberto Pietrafesa