From Newsgroup: sci.electronics.repair

Good day
Could you please help me with the part identification of IC 1 (6pin) in power supply.
It blew up therefore I am unable to identify it.

Thank you
Helmut Scharf
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For full context, visit https://www.electrondepot.com/repair/phonic-sem712a-128887-.htm

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From Newsgroup: sci.electronics.repair

On Sun, 31 Aug 2025 01:15:06 +0000, Helmut <0c52c607b536b670d826203cf93fdc3e@example.com> wrote:

Good day
Could you please help me with the part identification of IC 1 (6pin) in power supply.
It blew up therefore I am unable to identify it.

Thank you
Helmut Scharf

Whoa! a 14yr old thread without photo/docs included.

Given that there are two identical amp modules to
handle mid-rang or bass, the usual method is to
use the good module to identify values/types of
damaged parts in the bad one.

If you can't identify parts on the good module,
pics or a description of markings might help.

RL
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From Newsgroup: sci.electronics.repair

On Sun, 31 Aug 2025 01:15:06 +0000, Helmut <0c52c607b536b670d826203cf93fdc3e@example.com> wrote:

Good day
Could you please help me with the part identification of IC 1 (6pin) in power supply.
It blew up therefore I am unable to identify it.

Thank you
Helmut Scharf

I note that Phonic doesn't admit to having either made
or discontinued an amplified version of the SEM712.

This was a passive series.

RL
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From Newsgroup: sci.electronics.repair

On Sun, 31 Aug 2025 01:15:06 +0000, Helmut <0c52c607b536b670d826203cf93fdc3e@example.com> wrote:

Good day
Could you please help me with the part identification of IC 1 (6pin) in power supply.
It blew up therefore I am unable to identify it.

Thank you
Helmut Scharf

Links to dropboxed schematics in EEVblog

https://www.eevblog.com/forum/chat/anybody-got-schematic-for-phonic-sem712a-sem715a-powered-speakers/

RL
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