Comments on: SMD Cap Found Dead Short In AHUJA Portable PA System NBA-30WL

By: Parasuraman S

Parasuraman S — Mon, 12 Jan 2026 13:56:36 +0000

In reply to MP.

Yes, I too follow this method, which I have found to be very useful! Many thanks once again!

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By: Parasuraman S

Parasuraman S — Mon, 12 Jan 2026 13:55:06 +0000

In reply to MP.

Many thanks for your detailed explanatory comments!

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By: Parasuraman S

Parasuraman S — Mon, 12 Jan 2026 13:53:23 +0000

In reply to Yogesh Panchal.

Many thanks for your comments and suggestions, dear Yogesh Bai!

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By: Parasuraman S

Parasuraman S — Mon, 12 Jan 2026 13:51:30 +0000

In reply to Waleed Rishmawi.

Many thanks for your comments and suggestions, dear friend!

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By: MP

MP — Mon, 12 Jan 2026 09:36:28 +0000

I'm expressing my thought concerning a certain comment. Having an ICs schematic is very important incase of say a secondary circuit that has a short circuit in it. In such a situation when some tracks to the IC pins run under the IC. If I have no schematic for the ic, it becomes difficult to trace the vcc track to the IC vcc pin because when using a multimeter in continuity mode, almost all the ic pins show they are linked to the vcc source, just because of the short. In such a case desoldering out the IC is what I resort to so as to visually follow the track to the right input pin.

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By: MP

MP — Mon, 12 Jan 2026 07:53:21 +0000

You dont say how the PA sounded when testing it. "1-2 1-2 TESTING ! 1-2". I wonder how far the sound goes, seeing that it has no 'real' amplifier in it and has a 3.7v dc input. Tracing a shortcircuit in a secondary circuit among smd parts is a painstaking exercise, the hardest electronics repair. For capacitor testing, I always prefer lifting from the circuit board only one side of it (capacitor) because I've never known whether removing the whole of it from the board can have a damaging impact when its replaced in a 180 degrees turn. To me an smd looks on one end just as it looks on the other end, the difference is the same. I know your paraphernalia works for you just well enough for electronics repairs, mine is far from being nearly half as good. I nonetheless remove and fit smd components. I have to soldier on. If only you could see my apparatus for checking the integrity of; a capacitor, a diode, a transistor, ...... If only you could see how I manage to remove and replace ICs .... If only ... If only

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By: Waleed Rishmawi

Waleed Rishmawi — Mon, 12 Jan 2026 07:28:02 +0000

In reply to Parasuraman S.

there are very now many afordable cameras in the market that you can add to your phone. most of the time the a circuit diagram is not needed as long you understand the circuit under test..but I understand your point. things are taking me from reading the articles and commenting on them due to the fact that I am very very busy in the shop and I am doing a lot of training for some helpers in my shop and that is taking most of my time... have a blessed day

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By: Yogesh Panchal

Yogesh Panchal — Mon, 12 Jan 2026 07:26:02 +0000

Good Fix! Sir,
A microscope is a tool that can help you easily locate many faults.
If you're unsure about the voltage rails, a short Killer device can damage the circuit beyond repair.
Sir, now it has become my habit that whatever circuit I get for repair, I write the value of each component on its photo so that it can help me in repairing similar devices in future.

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By: Parasuraman S

Parasuraman S — Mon, 12 Jan 2026 00:49:45 +0000

In reply to Imoudu.O.

A strained capacitor might look differently in its color and soldering. Out of experience, we can make out this. Many thanks!

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By: Parasuraman S

Parasuraman S — Mon, 12 Jan 2026 00:45:59 +0000

In reply to Mark J.

Many thanks, dear Mark!

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