Comments on: Ryobi BC-1400L 14.4V Lithium Ion Battery Charger Repair

By: JovenUrbano

JovenUrbano — Wed, 09 Feb 2022 10:35:51 +0000

Very exhaustive repair! Patience really pays!

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By: Humberto

Humberto — Mon, 04 Jan 2021 03:28:30 +0000

A good repair. Great explanations Sir.

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By: Waleed Rishmawi

Waleed Rishmawi — Thu, 31 Dec 2020 11:02:40 +0000

a job well done on the repair. have a blessed day

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By: Albert van Bemmelen

Albert van Bemmelen — Wed, 30 Dec 2020 19:19:33 +0000

In reply to Menahem Yachad.

Understood Menahem. Most of my power adapter repairs, mainly the smaller 5V USB adapters, are always only defect at the primary side. Maybe this somehow relates to the size of the smps pwm controlled units? (such as maybe heat problems?)

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By: Yogesh Panchal

Yogesh Panchal — Wed, 30 Dec 2020 15:02:47 +0000

Menahem Yachad,
Lucky to fix the Unit.Odd parts availability (even data availability) now a days is headache.

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By: Alena

Alena — Wed, 30 Dec 2020 10:15:18 +0000

Hello, very nice repair. Most give up after few replacements, you saw it through!
Informative read. Thank you

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By: Menahem Yachad

Menahem Yachad — Wed, 30 Dec 2020 09:55:48 +0000

In reply to Albert van Bemmelen.

Albert,
About 8 out of 10 SMPS repairs which I have done, show defects in the Secondary Section, which after repairing, the job is finished.
So, by experience and habit, I naturally check the Secondary Section first.

If the light bulb had illuminated and remained so, that is a sign of a short in the Primary Section, and of course, requires repairing the Primary Section first. But that was not the case here!

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By: Albert van Bemmelen

Albert van Bemmelen — Wed, 30 Dec 2020 06:50:48 +0000

Nice smps power repair article with like often unknown controller parts (the mentioned AA68051 DIP-18) that are always a point of concern.
You successfully were able to fix the defect unit but oddly started checking the secundary side first and in conclusion found the trouble was also in the primary HV side. But all that counts is the good result in the end! Thanks for sharing!

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By: Parasuraman S

Parasuraman S — Wed, 30 Dec 2020 05:26:35 +0000

Excellent article packed with lot of technical knowledge! Well written and arranged in an order, indicating the class of the writer and how systematic he is in his approach! Highly professional talents, indeed! Kudos! Many thanks for sharing this!

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