I recently bought the K8061 extended interface board, I have soldered it all together and got it work with my PC problem is when I run either the diagnostic tool or the demo tool included on the CD the both say the cpu failed. I read another post [url]K8061 problem] on this forum that said it might be to do with the voltage but as it said in this other post I checked the voltage from the regulator and from the pins on ic6 (11 and 32) and they all where at 5v.
I have checked a load of solder points and redone a load to make sure and that all seems fine, I went around the board with my multimeter checking the connections as well and all seemed fine.
Can anyone give me some advice on what I need to check next, or is there anyway to check if it is the chip that is not working or something along that line.
Neither of the LED’s (11 or 12) come on with the power of the the usb and power.
When you say swap the optocouplers. I have switched them (put the one that was in ic1 in ic2 and visa versa, still neither of the LEDs come on). Do you mean rotate them in the socket, i didn’t want to do that without checking thats what you mean as I know that some chips can blow out if you do that (I don’t know a great deal about electronics so correct me if i am wrong)?
The optocouplers have the dots pointing away from each other, I believe that is the correct orientation, please correct me if im wrong.
If it is as you say and that IC6 is not running what can i do to make it run or is it a case of the chip itself having faulty firmware or being corupt in some way and if so is there any way that you know that i can get a replacement chip or even just test to see if it faulty or might it be something else on the board?