Help needed - RT Russell test card generator 1980
Posted: Fri Aug 12, 2016 11:11 am
We have received the following request for help - we will send the link to this topic so please reply here:
FIRST OF ALL , I HAVE TO CONGRATULATE YOU FOR THE EXCELLENT MAGAZINE. I AM WRITING TO YOU (FROM GREECE) ABOUT A PROBLEM THAT I HAVE WITH MY TEST CARD. LAST MONTH I DECIDE TO BUILD THIS TEST CARD (THE OLD ONE - R.T RUSSEL 1980).
I DID NOT ENCOUNTER SERIOUS PROBLEM WITH THE 40MHz OSCILLATOR, BECAUSE I REPLACED IT WITH A CRYSTAL ONE, SO THE BOARD 1 I SUPPOSE THAT WORK CORRECTLY (THE CIRCLE IS OK ). I ALSO BUILT THE SECOND BOARD (THE CROSSHATCH IS PRESENT AND THE MULTIBURST ALSO).
THE PROBLEM HERE IS, THAT I DO NOT KNOW WHAT KIND OF SIGNALS ARE TC1 AND TC2. FINALLY I BUILT THE LAST ONE BOARD (THE THIRD). HERE I HAVE SOME PROBLEMS. FIRST OF ALL I DO NOT HAVE GREY SCALE, AND IN THE FOND THERE IS NOT THE CROSSHATCH SIGNAL (I HAVE ATTACHED TWO FOTOS)
PLEASE, HELP ME IN ORDER TO COMPLETE THIS TEST CARD.
I HAVE TO THANK YOU VERY MUCH FOR YOUR TIME
BEST REGARDS
ELEFTHERIOS KOUZAKIOTIS
FIRST OF ALL , I HAVE TO CONGRATULATE YOU FOR THE EXCELLENT MAGAZINE. I AM WRITING TO YOU (FROM GREECE) ABOUT A PROBLEM THAT I HAVE WITH MY TEST CARD. LAST MONTH I DECIDE TO BUILD THIS TEST CARD (THE OLD ONE - R.T RUSSEL 1980).
I DID NOT ENCOUNTER SERIOUS PROBLEM WITH THE 40MHz OSCILLATOR, BECAUSE I REPLACED IT WITH A CRYSTAL ONE, SO THE BOARD 1 I SUPPOSE THAT WORK CORRECTLY (THE CIRCLE IS OK ). I ALSO BUILT THE SECOND BOARD (THE CROSSHATCH IS PRESENT AND THE MULTIBURST ALSO).
THE PROBLEM HERE IS, THAT I DO NOT KNOW WHAT KIND OF SIGNALS ARE TC1 AND TC2. FINALLY I BUILT THE LAST ONE BOARD (THE THIRD). HERE I HAVE SOME PROBLEMS. FIRST OF ALL I DO NOT HAVE GREY SCALE, AND IN THE FOND THERE IS NOT THE CROSSHATCH SIGNAL (I HAVE ATTACHED TWO FOTOS)
PLEASE, HELP ME IN ORDER TO COMPLETE THIS TEST CARD.
I HAVE TO THANK YOU VERY MUCH FOR YOUR TIME
BEST REGARDS
ELEFTHERIOS KOUZAKIOTIS
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