Comments on: ON-OFF Volume Control Found Broken In SONASHI USB-8 Band Radio-SRR89

By: Parasuraman S

Parasuraman S — Thu, 18 Dec 2025 12:29:15 +0000

In reply to Yogesh Panchal.

Thanks, Yogesh Bai!

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By: Parasuraman S

Parasuraman S — Thu, 18 Dec 2025 12:28:50 +0000

In reply to MP.

Yes, I think it was 2822. Many thanks for your comments and inputs!

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By: Parasuraman S

Parasuraman S — Thu, 18 Dec 2025 12:27:26 +0000

In reply to MP.

That is to be given as input to the amp ic.

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By: Yogesh Panchal

Yogesh Panchal — Wed, 17 Dec 2025 10:56:52 +0000

Good Job! Sir

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By: MP

MP — Tue, 16 Dec 2025 21:26:04 +0000

By any chance could the eight-pin audio amp IC you are referring to, be the 2822 IC. It made fault-finding a walk in the park. Vcc was oftenly a direct B+ feed to its power input pin (no regulator between). Speaker was also mostly, very simply linked to the 2822 IC pins. There was also the SMD version. They were easy to troubleshoot and easy to remove, just as they were easily available for easy replacement, for one to make easy money. What fantasy !

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By: MP

MP — Tue, 16 Dec 2025 09:08:23 +0000

In connectoin with what Imoudu asked, and in relation to the IC schematic, what possibly could the AOUT pin be for ?

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By: Parasuraman S

Parasuraman S — Mon, 15 Dec 2025 12:07:37 +0000

In reply to Imoudu.O.

No, dear! There was an eight-pin audio amp IC. But all bands of radio were handled with a single chip IC.

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By: Imoudu.O

Imoudu.O — Sun, 14 Dec 2025 20:42:37 +0000

I guess audio circuit is included in the single ic,thanks

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By: Parasuraman S

Parasuraman S — Sun, 14 Dec 2025 07:30:48 +0000

In reply to Mark J.

Many thanks, dear Mark!

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By: Mark J

Mark J — Sun, 14 Dec 2025 01:11:04 +0000

Parasuraman great job. I always enjoy your radio repair articles.

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