Model RX-385. Why does it turn on or turns on with white noise?

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Kenmore 385. 12708 Owner's Manual - ManualsLib

https://www.manualslib.com > manual > Kenmore-Ken...

View and Download Kenmore 385. 12708 owner's manual online. Sears Sewing Machine User Manual. KENMORE 385. 12708 sewing machine pdf manual download.

It is here

SERVICE MANUAL - Sears Parts Direct

https://c.searspartsdirect.com > lis_pdf > OWNM
PDF
SEWING MACHINE. DIV. 20. MODEL 385. 11602090. SOURCE 385. 385. 12708090. PAGE 2. 385. 12710090. 385. 12712090. 385. 12714090. WIND THE BOBBIN.
27 pages

KENMORE 385.11602090 SERVICE MANUAL Pdf Download

https://www.manualslib.com > ... > 385.11602090
Bobbin winding tension disc Bobbin winding spindle Top thread tension control Stitch... Page 4: Wind The Bobbin. SEWING MACHINE DIV. MODEL 385. 11602090 SOURCE ...

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https://www.searspartsdirect.com/partsdirect/user-manuals/38519001890-kenmore-parts-manual

see pp 69,70 care and oiling.

ALTAI PWR MIC - black/braid= earth, red=RX, white=TX, Yellow=MODASTATIC - blue/braid=earth, black=RX, red=TX, white=MOD, Yellow=Spare
SIRTEL ECHO MIC CBE 2002 - black/braid=earth, blue=TX, white=RX, red=MOD007 POWER MIC - brown/braid=earth, green=RX, white=TX, blue=MODSADELTA EC 980 - braid=earth, green=RX, brn=TX, white=MOD
or braid=earth, black=RX, blue=TX, white=MOD

there are no parts available for these ( toys ) so called vacuum cleaners. Sorry you wasted your money.

This may help Support Cobra Electronics Corporation

This speaker selector is standard accessory equipment for home audio equipment -- just follow the instructions with the unit.

The speaker selector unit has circuitry which prevents the amp from being overloaded by connecting too many speakers in parallel to the receiver. The receiver will have to be run at a higher volume level to drive all the additional speakers at the same volume as two sets of speakers, but this will not damage the amp in so doing.

Charlie

I used to get noise as well. It turned out to be that one of the cables to the speakers was loose. Try tightening the cable connections to the Yamaha and to the speakers.

I had the same issue here is the quote from the owners manual: To increase/decrease the volume level, press the up or down button during RX or STANDBY mode. With both radios on the same channel hold down the transmit or "PTT" button--this will put the other radio in the RX mode. While holding down this PTT or side button on one radio then you can adjust the volume on the other radio using the up or down arrows. (This is how you do it on RX mode. I'm not sure yet how to enter Standby mode.)

Check out the left channel amp stages - your issue is there.