Troubleshooting process is the most difficult part of the Sound Trigger making process. After consult with Sir Saiful, we suspect two problem that has occur on the circuit; that is :-
- The circuit is soldered wrongly.
- Both of the ICs in the circuit is damage because the circuit received wrong power supply.
Sir Saiful insist us to check the Datasheet for both of the ICs, we found out that its not the reason why the circuit is not working. The power supply given has nothing to do with it.
Our Troubleshooting process takes about two week since we are busy with quizzes and assignments. Since we found a dead end, not knowing what is the reason why our circuit is not functioning, we asked for help from a student which is known by its expertise in dealing with circuits, Afdhal Atiff. Check out his Youtube channel that contained all the project that he has made. http://www.youtube.com/user/afdhalatifftan92?feature=watch.
After discussed with him, we manage to find out the problem encountered.
The problem encountered :-
- The ICs is damaged because one of the pins break
- The circuit is soldered wrongly in the 'Trigger Switch' section
The problem found encountered at stage ‘ Trigger
Switch’. The resistor R4 (10kOhm) shown in the figure 4. below are supposed to
be hold from reaching ground (GND) before the circuit receive any sound.
The yellow and red box indicates where the problem encountered on the circuit
It
is discovered that the R4 is always at ground, that is why the circuit does not
work how it supposed to be. The problem was because of the solder. Two adjacent
joints TR1 ‘d’ and ‘s’ solder are contacting with each other
which results in short circuit and the circuit not functioning properly. That
is why the circuit act like a normal light circuit.
Using solder pump to
suck back the solder lid at the TR1 ‘d’
and ‘s’ to fix back the problem. After that, the circuit works as the way
it must be.
After all, Sir Saiful suspicion about the reason why the circuit is not functioning was right. Thanks to Afdhal, we managed detect the problems in detail.
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