Hi forum!
I read somewhere in the net that a good accurate Low-Resistance meter or ESR meter could be helpful to isolate a bad shorten IC or component inside a PCB, by reading resistance and check where the lower resistance is the nearer short-circuit is. Here is where good accurate meter comes into scene.
In fact, I have a game board that has "only"(?) a 28~30 Ohms resistance between +5 and ground. I hook it up to my cab PSU and when running Z80 and a 74XXX were gone oddly hot, so I unsoldered them suspecting one could be the culprit, but no luck. Short is still there.
I already have a DIY EST meter to check capacitors and resistance out of the circuit, but it cannot help me in that way.
Any recommendations?
I read somewhere in the net that a good accurate Low-Resistance meter or ESR meter could be helpful to isolate a bad shorten IC or component inside a PCB, by reading resistance and check where the lower resistance is the nearer short-circuit is. Here is where good accurate meter comes into scene.
In fact, I have a game board that has "only"(?) a 28~30 Ohms resistance between +5 and ground. I hook it up to my cab PSU and when running Z80 and a 74XXX were gone oddly hot, so I unsoldered them suspecting one could be the culprit, but no luck. Short is still there.
I already have a DIY EST meter to check capacitors and resistance out of the circuit, but it cannot help me in that way.
Any recommendations?
