Wasting Time Checking Electronic Components?
If you are new in this repair field and have spent many hours checking on a circuit board and yet still could not find the fault-please do not give up. Please do not feel that you are a failure because success comes when you have failed many times. We will learn from our mistake and this will improve us on the next repair. Although you have spent countless hours without finding the bad component, do you know that during the process of checking the components, you are actually inputting lots of info? For example, how to calculate the value of the components (caps and resistors), how to desolder/resolder properly, how to scan for bad components before doing the repair work (bulged cap, burnt components, dry joints and etc), how to find the equivalent number and etc. There will be lots of things playing in your mind when you are troubleshooting a circuit board. And each of the repair work will only make you better in the next repair.
I have made lots of mistake before reaching this level. I had been electrocuted (quite serious one-i did not use isolation transformer at that moment), shorted by primary filter cap, arc by 24 kv anode voltage and etc. I did not give up on repairing and infact i have learnt from it on how to deal with this kind of problem. We are not perfect and if you ask any electronics repairers they will surely had came across horror incident in this repair field. Don’t feel bad if you can’t locate the problem.
Take a break and relax your mind. A 5 to 10 minutes break could improve the chances of finding the fault. By the way, if you have made any mistake in electronic repair, please do share because we don’t just want to hear success stories, we would also like to know about how we have failed and rise up again to become a better repairer.