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Fisher MT272 Stereo intermittant speaker problem

The speakers seem skittish, but it's not the speakers, as they work on other stereos. Sometimes one speaker works, then they both work for a little bit, then neither work. The speakers and speaker wire are OK. Should I start digging in the stereo, and if so, what should I replace and/or look for? Thanks.

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Check the power supply and power amp board for loose connections.
nuwan.

Posted on Jan 15, 2009

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1 Answer

My technics sh-eh780 stereo seems to work but the sound is very dull in sound


Unless there's an issue with internal components of the amplifier or speakers, a common cause of this is reversed speaker polarity.

The wires between the + and - terminals of the speakers MUST connect to the same + and - terminals on the back of the stereo amplifier. The speaker wires that came with the stereo are color coded to help prevent mis-wiring. If you did not pay attention to this or used different wires for any reason, you need to ensure that the wires between the each of the speaker's 4 terminals connect to the correct group and + / - terminals on the amp.

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See page 6 of the manual here: https://support.panasonic.co.nz/docstore/SC-EH780%20Operating%20Instructions.pdf

Make sure that the surround and center speakers are connected correctly, too.

Good luck!

Apr 06, 2014 | Technics SC-EH780 CD Shelf System

1 Answer

Need a new stereo to work with the old speakers


Any 5.1 surround system will work with this. It is better to be high in impedence than too low.

Feb 13, 2014 | Sony MHC-M300AV CD Shelf System

1 Answer

I have a sa-ak320 stereo that was left at my gf's


The 6 ohm speaker would make it slightly louder but won't solve the problem, you are right the stereo has bad audio output ic, and there is trouble with the cd player. I would use it until it goes, and get a brand new unit, not cost effective to repair.

Apr 15, 2012 | Panasonic Audio Shelf Systems

1 Answer

The Graphic Equalizer pattern control is not working correctly - I can hardly hear the vocal on my CD's when playing even though I've selected vocal. Vocals are outplayed by background music.


That sounds more like a polarity, or phase problem. Make sure your speakers are hooked up correctly, with the correct colors going to (+) positive, and (-) negative. Make sure your rca connection are correct, and that every connection has a left and a right. No stereo-to-mono adapters.

Is setting to "vocal" an eq selection, or a "dolby" stereo selection?

Are you using a dolby surround stereo receiver with left, right, center, rear, etc.?? If so, try turning off any effects, or anything that would send signal to the center speaker.

Lastly, depending on what the source of your music is, it is possible if your connections or receiver settings are not correct...that the music upon playback will be out of polarity, meaning the vocal portion will cancel out. Combining left and right signal together can sometimes do this as well.

Apr 09, 2010 | Denon D-C30 Shelf System

1 Answer

Srereo output into one speaker


The short answer is no. The longer is:

Only an amplifier designed to have a "bridge" mode will do as you wish. Standard stereo amps are not designed to work together in that fashion.

Dan

Nov 14, 2008 | Audio Shelf Systems

4 Answers

How to turn protect off


You cannot . This a feature that detects a short and shuts the stereo off before it can do further damage. If you can disconnect your speakers try that then turn on your stereo. If it displays protect mode your problem is internal. If it stays on try hooking up one speaker at a time to see if one of your speaker is bad. Make sure you turn off your stereo before attempting to reconnect your speakers . Good luck

Mar 03, 2008 | JVC HX-D7 Shelf System

1 Answer

Low Volume from right speaker of entertainment center - turntable only


Hi There thanks for your very good desctiption of the problem it really helps to have a lot of detail...

There are Mono and stereo types of stylis cartridges and it sounds like you have a mono equipped into a stereo amplifier..

If there are 4 small coloured wires visible under the stylis then
its a stereo stylis and should work, have a close look and maybe one of the small wires has dropped of the small pins on the back opf the stylis cartridge.

If there only two wires visible then its a mono cartridge and this is why you only have sound from one channel..

So answer is wires dropped of the stylis.
or
Wrong type of stylis cartridge.
or
if there are four wires and thay all look connected then perhaps the stylis is faulty and you need to replace it...

Cheers from YU BEUT

Feb 02, 2008 | Audio Shelf Systems

2 Answers

Adding two more speakers to stereo system


That's what we call parallel connections, Yes it's possible, but will decrease the sound wattage of the amp. Having these connections is risky, you do not want to shortage the speaker output of your amp by making mistakes of wire's color coding. Other than that, it should be fine......

Dec 11, 2007 | Denon 201SA Audio Shelf Systems

2 Answers

No sound


Is the A/B speakers button pressed? Is the muting button pressed? Is the stereo switched to "Line In"?

Sep 29, 2007 | Sharp CD-ES777 Shelf System

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