Question about Sony CFD-646 Boombox

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Sony CFD-646 I cannot get sound out of both speakers, despite repeated attempts to press the stereo/mono button. But it was playing stereo just the other day and nothing happened in between to affect the speakers.

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Are you interested in selling your sony cfd 646? I'm looking for spare parts! contact me at :lizzymariascott@att.net

Posted on Apr 06, 2009

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Maybe the audio amplifier IC are bad

Posted on Oct 01, 2008

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Posted on Jan 02, 2017

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1 Answer

I want to set the receiver to surround sound. The indicator only shows two speakers I want it to show five


What is the source of your sound? By default, receiver will use only those channels that are used in the input signal - if you play CD in stereto, it will use only 2 front speakers. If you play DVD with 5.1 audio, it will use all 5 speakers (+ subwoofer if you have one).

However you can use one of the bulitin "sound field program" modes to mix the 2 channel stereo music to all speakers. On front panel, press "PROGRAM < >" buttons to select the one you like. Or on remote control, repeately press MOVIE, MUSIC or STEREO buttons. You can check your manual for description of each sound field program.

Oct 11, 2014 | Yamaha RX-V661 Receiver

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How do i change the AM radio to FM?


Hello
Press RADIO BAND.AUTO PRESET until the band you want appears in the display (direct power on). Each time you press this button, the indication changes as "FM" --> "AM". Hold down TUNE + or --, until the frequency digit begins to change in the display. The player automatically scans the radio frequencies and stops when it finds a clear station. If you can't tuned in a station, press the button repeatedly to change the frequency step by step. If FM broadcast is noisy, press "MODE" until "Mono" appears on the display and the radio will play in monatural without any noise. Only strong FM signals can be decoded to stereo. OK.

Oct 22, 2011 | Sony CFD-S300 Radio/Cassette/CD Boombox

2 Answers

How do you auto preset radio stations?


Hello
[1] Press RADIO BAND.AUTO PRESET until the band you want appears on the display [direct power ON]. Each time you press the button the indication changes as follows. "FM" => "AM"
[2] Hold down TUNE+ or --ve until the frequency digits begin to change in the display.
The player automatically scans the radio frequencies and stops when it finda a clear station. If you can't tune in a station, press the button repeatedly to change the frequency step by step.
If FM band is noisy, press the MODE repeteadly until "MONO" appears in the display and the radio will play it monatural. If FM radio signal at your area is very weak, this type of noise may occur. OK.

Sep 28, 2011 | Sony CFD-S350 Radio/Cassette/CD Boombox

3 Answers

Can't change from MONO to AUTO mode


Hello
Can't make sound from mono to auto is your problem I thinks and posts this solution.
Hit the "Menu" button and surf through, come to "Sound Adjust" window.
The settings allow you to change and adjust sound in your TV. There are Bass, Treble and Balance control to adjust to your individual taste.
To adjust them
1. Press Menu button.
2. Press UP or DOWN button to select the desired item.
3. Press => or 4. Press EXIT button when finished.
When adjusting the parameter of "Balance" control, always set it to mid position to get stereo sound from both speakers. If it is set to any extreme end, there will be no output from the speaker of that side, and will hear as mono.
If you press "0" [Zero] button, you can reset the sound settings to it Factory settings.
To select 'Streo mode;
1. Press "Menu" button.
2. Press UP or DOWN button to select MTS [Multi-channel Telivision Sound].
3. Press => or [The ON AIR arrowtells you if a broadcast is in stereo AND/OR contains the SAP.
Press "Exit" button when finished.

Keep the TV in stereo mode to get the best sound quality. The sound will work in stereo

mode even if a certain broadcast is in mono sound only.

Choose the mono setting to reduce excessive noise on a certain channel or broadcast.
Selecting SAP will allow you to hear an alternative soundtrack, if one is available.

Apr 01, 2011 | JVC AV32F476 32" TV

1 Answer

How do I get my rca truflat tv to get out of mono?


Hello
Press the MTS on the remote control handset to select STEREO, MONO or SAP. All the options will be available only when the current TV channel is broadcasting that option. Channels will not always carry programes, that have all MTS options. If "STEREO" appears on the screen when you select a channel means stereo sound is available with current programme. You can hear sound from both speakers. If broadcast is not strong and clear, stereo sound will not be available. Press "MTS" button to change it to "Mono". This will eliminate the noise. If "MONO" appears on the screen when you select a channel, stereo effect will not be availabe, even though you have set it to stereo. If "SAP" appears when you select a channel 'Second Audio Programe' [SAP] broadcasting is available for that programme. Press the "MTS" button to 'SAP' and you can hear that programe in different language or some other kind of audio.

Oct 28, 2010 | RCA TruFlat 27F520T 27" TV

1 Answer

Auxilliary jack for sony cfd-646 boombox


Are you interested in selling your sony cfd 646? i'm looking for spare parts! if so, contact me at: lizzymariascott@att.net

Dec 06, 2008 | Sony CFD-646 Boombox

1 Answer

Play mode


Tape the play button down (better if you have a repeat button) I have done this and used a marble under the tape to simulate a thumb-like pressure imitation

Apr 11, 2008 | Sony CFD-S200 Cassette/CD Boombox

1 Answer

Seems to only play in Mono


Karen - Is it only the FM section that is giging you trouble? Does Stereo work for the other inputs - VCR/DVD/Turntable?
Is that stereo button ONLY for the FM section?

May 13, 2007 | Teac AG-V3050 Receiver

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