20eyes
New member
Phoenix
Problem:
Even spaced lines horizontally across screen/1st row of letters and numbers missing at top of screen.
Solution:
Found pins 3+6 stuck high on IC7 74LS136 replacing it fixed the problem.
Picture looks the same if the chip is removed entirely.
Problem:
Even spaced lines horizontally across screen/1st row of letters and numbers missing at top of screen.
Solution:
Found pins 3+6 stuck high on IC7 74LS136 replacing it fixed the problem.
Picture looks the same if the chip is removed entirely.
Last edited: