Comments on: Mean Well Model P25A-14E Power Supply Repaired

By: Yogesh Panchal

Yogesh Panchal — Tue, 19 Apr 2022 16:16:23 +0000

Good Job! keep sharing,Riaan.

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By: Paris Azis

Paris Azis — Sun, 17 Apr 2022 17:44:54 +0000

Very interesting repair indeed, Riaan.
The reverse engineering you did on the defective stage makes the mechanism of both the failure and the way the applied protection works even more easily explicable and understandable.
I find the circuit design very sophisticated as you already have explained.

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By: Robert Calk Jr.

Robert Calk Jr. — Sun, 17 Apr 2022 03:21:33 +0000

Good job, Riaan.

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By: Imoudu. O

Imoudu. O — Sat, 16 Apr 2022 14:55:52 +0000

Wow!! It sounds new thing to me, for I have not handle with such component before.More importantly I have learned additional information from you.Thanks for sharing.

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By: Rich Leonard

Rich Leonard — Sat, 16 Apr 2022 12:57:44 +0000

Very nice repair - good catch! Have to add a Peak Atlas digital SCR100 tester to my bench.

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By: Parasuraman Subramanian

Parasuraman Subramanian — Sat, 16 Apr 2022 12:38:38 +0000

Excellent informative article! Many thanks for sharing

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By: Albert van Bemmelen

Albert van Bemmelen — Sat, 16 Apr 2022 11:18:07 +0000

Repairs like this one with in detail included schematic make it a very interesting article to read! The Peak Atlas digital SCR100 tester and probably the one you used are the only few that are capable to also test the higher gate current requiring triodes (upto 90mA!) since most cheaper Chinese semiconductor testers are only able to handle the low gate types. And even Peak Atlas's own DCA75 Pro semiconductor is not capable to test Triacs with gate currents higher than 12mA!

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