Comments on: Power Supply Modified In Philips Sound Machine Model AZ380/94

By: Sivadasan KK

Sivadasan KK — Fri, 29 May 2026 04:10:00 +0000

In reply to Imoudu.O.

Dear Sir, Iam Sivadasan, 67yrs. retd.Indian Navy(Electrical Branch) from Calicut, Kerala.

Sir I have a vintage Sony audio system model: MHC-GRX10AV (1000PMPO (1998),since Iam not getting the original IC M62442, could you please help me,how to procure it.

Thanking you in anticipation.

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By: Parasuraman S

Parasuraman S — Fri, 06 Oct 2023 04:32:54 +0000

In reply to Yogesh Panchal.

Many thanks for your comments and sharing your experience!

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By: Yogesh Panchal

Yogesh Panchal — Wed, 04 Oct 2023 16:50:34 +0000

Good Job! Sir,
i repaired same type of the problem simply installing 9v /1.5amp DC adapter Bypassing Battery connection from inside,Because now a days using this device on big 1.5v X 6 cell is not economical for every day use.

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By: Parasuraman S

Parasuraman S — Sun, 01 Oct 2023 10:02:37 +0000

In reply to Imoudu.O.

+ was connected to the positive rail and - to the negative rail. The two 0.01 caps across the diodes would filter noise generated by the diode when AC is rectified. Hope this clarified your doubts! Many thanks for your comments and clarifications sought!

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By: Imoudu.O

Imoudu.O — Sat, 30 Sep 2023 21:54:44 +0000

I don't get where the +/- of e-cap was connected on rectifier.What is the purpose of the two 0.01 cap?
l need to understand.
Thanks for sharing.

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By: Parasuraman S

Parasuraman S — Sat, 30 Sep 2023 14:53:25 +0000

In reply to Albert van Bemmelen.

I have seen him doing it. First he takes out one core pushing it out using suitable tools. Then pulls out one by one. There will be two L shaped or M shaped cores inserted from top and bottom alternatively, the gap of which will be filled by thin sheets. You can see the process here

Many thanks for your comments!

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By: Parasuraman S

Parasuraman S — Sat, 30 Sep 2023 14:49:09 +0000

In reply to Waleed Rishmawi.

Many thanks for your comments, dear friend!

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By: Albert van Bemmelen

Albert van Bemmelen — Sat, 30 Sep 2023 06:51:04 +0000

Another very well done modification on a set that was already saved before!
I always wonder how they manage to disassemble the core of such a defect transformer because it always seems close to impossible to carry out such a task. It no doubt would make a very interesting article if that person would share that process in detail.

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By: Waleed Rishmawi

Waleed Rishmawi — Sat, 30 Sep 2023 05:39:33 +0000

rewiring such a transformer is such an expensive process in my cournty therefore I always try to buy a second hand device and take parts from it if I have to. you managed it though and it was a success. good job my friend and keep up the good work. have a blessed day

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