Comments on: Audio Restoration Repair Bose Wave Music System AWRCC1 AWRCC2 AWRCC7

By: Jerry

Jerry — Fri, 06 Feb 2026 23:17:59 +0000

Thank you for a fine article. I just wonder on the basis for your dislike of SMD capacitors w/r/t thru-hole capacitors. The OEM SMD capacitors, assuming year 2000 production and installation, and calling 2015 the "onset" year for failures, had a 15 year working lifetime. Respectable. I might chide the Bose engineers for perhaps under-rating the capacitors for the working voltages, as OEM use of higher-voltage rated capacitors may have made the design more robust against the stress of power on/off and CD-change voltage transients, and achieved greater lifetime. I personally have done the CD-changer board repair successfully with SMD capacitors and, at age 75, will not be surprised if the repair outlives me. What would be helpful in your article is some description of a preferred tool set. I used a fine-tip 22W soldering iron and gentle finger persuasion to separate capacitors from PCB with the heat. I did wish for a tool to handle the capacitors as my fingers are marginally too big for the task. But my thanks.

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By: Jerry Richt

Jerry Richt — Mon, 19 Jan 2026 05:13:43 +0000

Mr. Yachad.
Thank you for the excellent article. I am now looking forwards to repairing my Bose Wave rather than disposing of it. If available, can you please send a list of components?

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By: philip

philip — Wed, 02 Jul 2025 00:57:18 +0000

In reply to Anonymous.

I too would like to know its value. Couldn't test it because mine was in three pieces

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By: tns

tns — Fri, 03 May 2024 17:45:26 +0000

In reply to tns.

AWRCC1, early version (1st board pic above).
I thought replacing the DMMT3904 had fixed the KSH210 power issue but even though the unit now powers and plays I have a background hum on FM.
I now see the collector of KSH210 is up at the 16v rail instead of the regulated 9v to 12v range required by the preamp IC. I am trying to trace out this
circuit to see how it is supposed to regulate, but keep finding more parts involved. Has anyone traced this out?

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By: tns

tns — Fri, 03 May 2024 16:14:09 +0000

In reply to Beetle1303.

It has been awhile but I don't think the display lit up without KSH210 being on.

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By: Anonymous

Anonymous — Sun, 21 Apr 2024 20:42:19 +0000

In reply to David.

On a AWRCC2 radio it shows 450, 145V.
BC, 3R8 on other side.
Not a spark chaser so good luck.

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By: Phartlyps McClanahan

Phartlyps McClanahan — Tue, 05 Mar 2024 15:11:42 +0000

Thank you Mr Yachad. It was exact problem in my unit - A burned out trace. What a shame for Bose, a good name marred by cheap parts. New parts are on the way!

You are a man of deep honor!

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By: James Anderton

James Anderton — Mon, 08 Jan 2024 16:18:55 +0000

Great info the problem with these Bose units.Can you replace the capacitors in these units.I have one that needs to be repaired.I'm old & can't see well enough to soldier any more.Thanks for great knowledge James Anderton. Please respond

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By: Beetle1303

Beetle1303 — Tue, 04 Jul 2023 13:42:53 +0000

In reply to Kazam.

I have the same issue - I am curios how you ascertain it is shorted to ground, and what it should be without having the schematic?

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By: Beetle1303

Beetle1303 — Mon, 03 Jul 2023 08:39:06 +0000

In reply to tns.

I am so glad to found this tread - I have the exact same model and exact same issue. I have just ordered the same part#, and some smd component soldering tool and material.
One question - does the VFD display works prior to KA4 component replacement?
Thank you.

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