Question about Sony CFD-ZW755 Radio/Cassette/CD Boombox

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Sony boomBox cfs-w455 has power but no sound output

It has power light constant on. every once in awhile I will get a snipette of sound, then it cuts out again. completely unpredictable. I've tried wigling every cord and tapping on the case to see if there is just a loose wire internally. No sound on AM or FM. Cassette wheels turn but no sound comes from the box on that mode either. I can hear hissing from the tape whirling but it will not play the music on the tape. this radio worked tremendouly for yearsAll dials and levers work fine but make no difference for sound output. Does it have a "sound card" or something like that? can it be repaired?

Posted by on

  • diana brace May 11, 2010

    gave up. I couldn't find a solution here. I think I will just cut the cables to the speakers and use them for stereo outdoors since they are plastic and can take the elements. too bad - it was a great.

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: cassette drive turns, speakers hiss but no music

Mode switch trouble! no audio from cassette function?

Posted on Feb 26, 2009

welcomejee
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SOURCE: sony boombox model cfs-b11 transformer

Your tape requires 9 volt transformer as shown in below schematic..

7676255.jpg

Part number is 1-450-016-11

Posted on Mar 05, 2009

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SOURCE: bad transformer? Sony CFS-W338 boombox

More than likely there is a voltage resultor in the circuit that will take the 24V input and convert it to 9V internally. This voltage difference is not necesarily a problem. What is the problem with the unit that is causing you to check the voltages?

Dan

Posted on Sep 21, 2009

  • 6771 Answers

SOURCE: I have a Sony cfs-w360 boombox that needs a power

Tv repairs shops carry a selection of power supply cords, also check out Radio Shack Stores.

Posted on Feb 02, 2011

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1 Answer

When will this ship?


For a correct answer, please contact the site where you ordered your device. We only try to answer questions. We don't sell or ship anything. We don't have order numbers.
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Apr 16, 2015 | Sony Vtg 80s Cfs-500 Stereo Boombox...

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Sony cfd-s01 boombox radio


Hi Bart,
You will find there is a specification plate on the rear of the unit.
It should have a rating on it showing the wattage of the unit. This is usually the amount needed to operate all the functions of the boombox.
The wattage is your input voltage multiplied by the current draw in amps. So the amperage is the rated wattage of the unit divided by the input voltage.
Usually all power goes through the transformer, so I would use this input amperage as a guide, and assuming there is no power loss, use the same calculation for the output - you know it is 9 volts, so the wattage going to the unit is the same as the input wattage, so you can calculate the amperage from this.
Transformers usually work on AC input/output, so there will also be a rectifier to convert the AC to DC for your boombox.
I would add 10 - 20% above your calculation to make sure you have sufficient power. Also I suggest that you install a fuse between your transformer and the boombox for safety.

Feb 02, 2014 | Audio Players & Recorders

1 Answer

My sony cfs-w360boombox plays tape at high speed upon play, normal or high speed poition


there may be 2 possibles

1, the pinch roller is not going down and staying in the fixed when during playback, easy way to check power down the unit, press play and see if it looks firm, it will push back, if working right

if its loose, it may well have come off a little sping, and may well be an easy ish fix, by someone who know about cassette decks,

2, the speed adjustment has failed, there will be an internal speed control, which keeps the playback at a correct speed, if this has failed it may be fixable, but only by someone who can take it to bits and remove and solder a new one in, and they are very small and Sony items i have had have failed on speed control! too for me its a junker box

good luck

Sep 24, 2013 | Sony Boom Box With CD Player & Cassette...

1 Answer

Ikasu dvd boombox -no sound


If you have power to the unit but no sound, chances are the audio output ic has shorted causing a load, turn volume down, power off, remove speaker wires, power on, if standby light stays on audio output ic needs to be changed. If however the standby light changes or goes off it indicates a short in the wires or speaker issue, hook up one at a time to identify the problem one.

Feb 16, 2012 | Audio Players & Recorders

1 Answer

I only need the amperage for the adapter for a CFS 914 sony radio. Thank you


The adapter is an AC-905. The important bit is the 500 mAmp. The actual part number is 169301611

Nov 20, 2010 | Sony CFS-914 Cassette Boombox

1 Answer

Bad transformer? Sony CFS-W338 boombox


More than likely there is a voltage resultor in the circuit that will take the 24V input and convert it to 9V internally. This voltage difference is not necesarily a problem. What is the problem with the unit that is causing you to check the voltages?

Dan

Sep 14, 2009 | Sony CFS-W338 Radio/Cassette Boombox

1 Answer

Sony boombox model cfs-b11 transformer


Your tape requires 9 volt transformer as shown in below schematic..

7676255.jpg

Part number is 1-450-016-11

Mar 05, 2009 | Sony Audio Players & Recorders

1 Answer

Need patch cords


Sorry, unit was built sharing power supply with amp, hence no power connector or standars rca sockets. Cost cutting exercise, so without the rest of the system you may have problems getting the unit to operate even if you could work out the connections to it. I know its not a cure but a "fixya" rating would help my profile in here. Thanks

Jan 14, 2008 | Audio Players & Recorders

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