Hi;
I have a Batttlezone PCB that has no Z channel output. I checked all the voltages on the PCB, and all are present and within specs.
The game plays and you can see this if I turn the brightness all the way up, (retrace lines everywhere). I scoped the Z output and verified that it is not putting anything out.
It appears that the previous owner tried to repair this issue as almost all of the components have been replaced on the Z channel output, starting at the end of the schems going backwards, with only a couple of exceptions.
I studied the schems and with my limited EE experience, I am needing a little guidance (lot) at this point.
Could the LF13201 at position D11 cause this problem?
Would I be able to prove / disprove this with the use of my logic probe?
Any advise would be greatly appreciated.
Thanks is advance
Jeff
I have a Batttlezone PCB that has no Z channel output. I checked all the voltages on the PCB, and all are present and within specs.
The game plays and you can see this if I turn the brightness all the way up, (retrace lines everywhere). I scoped the Z output and verified that it is not putting anything out.
It appears that the previous owner tried to repair this issue as almost all of the components have been replaced on the Z channel output, starting at the end of the schems going backwards, with only a couple of exceptions.
I studied the schems and with my limited EE experience, I am needing a little guidance (lot) at this point.
Could the LF13201 at position D11 cause this problem?
Would I be able to prove / disprove this with the use of my logic probe?
Any advise would be greatly appreciated.
Thanks is advance
Jeff


