Impact of Dry solder on Electronic repair

Hi repair friends,

Well-come back again. Based on my repair History i am presenting this article so far what are all the problem faced while repairing electronic equipment’s like TV/Amplifiers/smps etc.

Solved many number of equipment’s by simply dry solder.

Simply removing good components checking caps/resistors/ICs and replacing the same failed my many repair task I was wondering how other local technician repaired my un solved equipment. Question in my mind what are all the secrete beyond him even he does not know to read the resistance value colour code and his basic education is less and his repair capable is high.

Based on my qualification people expectation is more but i was unable to solve simple problems. Non of the engg books reveal the repair tricks i promise you engg books says the entire working principle. But i am not telling you not to read engg books. They direct you to deep theory section block.

Because of my passionate in electronic to go in deep trouble shooting. I studied entire Television Book operation theory written by Sharma. even after this i have not become a success repairer.

Yes their is some shortcuts in repairing, but these things won't come by reading books or studying circuits. But they add a platform for repair success story which may come only by work experience. I spended lot of time in trouble shooting in my career learned a lot even today. Because of this I was able to write such a wonder full article. Each sentence revealed based on my work troubleshooting history.

Below are the basic short cuts to be followed before going to deep repair operation for any electronic equipment’s

1)  Visual inspection & Observation in the circuit board

2) Any caps Bulged are physical difference in appearance (Need to check ESR Values)

3) Any burning smell or Hot on both active /Passive components in ckt board

4) Any dry joints or track burned in stress area.

Above 4# Points to be strictly noted for any electronic equipment’s as a first aid before going to deep theory. By doing this 50% of the repetitive failure can be eliminated after section repair and repair service may last long life Yes finally the secrete beyond the local Technician is revealed. I started giving training for non-professionals and they succeeded in solving faults by following above method.

Below is one of the story which I solved the fault and charged the costumer who felt very happy.

One of my Costumer brought the induction stove for repair. The problem is having error information E3. Since the heart of the circuit is pic based microcontroller without proper data it's very difficult to trouble shoot the culprit.



DRY JOINTS

The brand name of the stove is PREETHI , googled an internet to see the code location and no clear information. Only say's could be internal fault in the circuit. Then what is that internal fault?

COMPONANT SIDE

Really i could not able to solve. Ultimately made my mind to return the unit. Before giving back taken the solder flux applied the stress area and re soldered the dry joints and followed above 4 steps and re-checked the unit. To my surprise now an equipment is perfectly alright working excellent it's a matter of dry joint. I have not used single component for this repair. Its completely Zero investment.



ANOTHER LOOK

This is one of the shortcut method what the local technician will do as one of the secrete.

WORKING  FINE AFTER REPAIR

Costumer felt very happy on resolving this. Further I continued above revealed steps as a first aid before going to deep analysis and even now I have been following same methods and solved N number of equipment’s. Hope you enjoyed my  article let us meet in the next session take care.

Regards

Basavaraj BM