I have a little board for ivan stewarts off road racing. it controls the steering wheel. the chip in it is a sn74ls14n
I think this is the problem, saw a post with same problem, and that was his fix.
Which is a HEX SCHMITT-TRIGGER INVERTER.
The chip has 6 input/output "channels" what happens is the input comes in on pin 1 and is output on pin 2. The board then has a trace that
connected pin 2 to pin 3. So then signal goes to input 3(pin 3) and then outputs to pin 4. That is then output to main PCB board. So input signal is going threw 2 of the input/outputs gates.
My questions.
Does it change anything going threw 2 of the gates?
Is it inverting it twice...and changing the signal, or just cleaning up the signal twice.
How can i test the chip, to see if that is the problem?
What are the odds that some of the gates are not working, but the ones not used would still work?
SO i could put a jumper wire from input to not used gate 5/6 . and output 6 to main PCB.
Could i also just get a replacement chip, and set if on top of old chip, and solder to those legs. The board is really old, and i think i would
ruin traces, if i tried to de-solder, and put a new one in.(i know, not the correct way to fix it)
I think this is the problem, saw a post with same problem, and that was his fix.
Which is a HEX SCHMITT-TRIGGER INVERTER.
The chip has 6 input/output "channels" what happens is the input comes in on pin 1 and is output on pin 2. The board then has a trace that
connected pin 2 to pin 3. So then signal goes to input 3(pin 3) and then outputs to pin 4. That is then output to main PCB board. So input signal is going threw 2 of the input/outputs gates.
My questions.
Does it change anything going threw 2 of the gates?
Is it inverting it twice...and changing the signal, or just cleaning up the signal twice.
How can i test the chip, to see if that is the problem?
What are the odds that some of the gates are not working, but the ones not used would still work?
SO i could put a jumper wire from input to not used gate 5/6 . and output 6 to main PCB.
Could i also just get a replacement chip, and set if on top of old chip, and solder to those legs. The board is really old, and i think i would
ruin traces, if i tried to de-solder, and put a new one in.(i know, not the correct way to fix it)