Cedsrepairs
Well-known member
hello everyone ,
i happen to have a sup’r’terminal 80 columns card for my apple 2
it comes with a small socket to put on top of one of the chips and I fixed some bad solder joints .
Even after plugging it in in the right way ; with the little cable to the chip connected on the motherboard ; the card doesn’t seem to work but I’m not sure how to test it
I just did a pr#3 and hooked up the output ; and there’s nothing to be seen
Does anyone know how to properly use those ? And maybe the most common issues ?
One thing that stands out is that the power resistor ( big black tube) « smells hot » and is getting hot . I wonder why the heck they did put such a resistor that just seems to be sitting in the 5V rail to load it for the sake of it
i plan to remove all the logic that is soldered ( 20 chips !) and put them all on sockets ; after checking each chip in a tester ; to fix this card for good … And so it remains fixable in the future .
but if i can avoid unsoldering 20 chips that would be great too
i happen to have a sup’r’terminal 80 columns card for my apple 2
it comes with a small socket to put on top of one of the chips and I fixed some bad solder joints .
Even after plugging it in in the right way ; with the little cable to the chip connected on the motherboard ; the card doesn’t seem to work but I’m not sure how to test it
I just did a pr#3 and hooked up the output ; and there’s nothing to be seen
Does anyone know how to properly use those ? And maybe the most common issues ?
One thing that stands out is that the power resistor ( big black tube) « smells hot » and is getting hot . I wonder why the heck they did put such a resistor that just seems to be sitting in the 5V rail to load it for the sake of it
i plan to remove all the logic that is soldered ( 20 chips !) and put them all on sockets ; after checking each chip in a tester ; to fix this card for good … And so it remains fixable in the future .
but if i can avoid unsoldering 20 chips that would be great too