Question about JBL MR140

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I have a JBL MR-140 radio and no power goes to it when plugged in power source.

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A fuse may have opened.

Posted on May 13, 2018

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Check the fuse if the fuse is good check if you have pluged the face well

Posted on Jun 15, 2019

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Posted on Jan 02, 2017

Elliot

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SOURCE: JBL MR-4 CD doesn't eject

The unit probably doesn't think there is a CD inside. Possible doing a soft reset will fix this. Do so by powering the unit and putting a ball point or other pointed object into the reset button opening either on the face of the radio or behind the face. A hard reset can be done by disconnecting constant power from the unit for approximately 15 seconds.
If either of these methods fail, then your unit has a bad CD mechanism or more than 1 CD inside the player. In that case, the unit will have to be serviced by an electronics repair or a local stereo shop. This is a Marine radio, and if installed on a boat, this problem is not too uncommon. Moist air can cause damage to the unit as well as the bouncing on the water that boats do.

Posted on Aug 11, 2008

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1 Answer

Hi, I bought a new JBL SCS 140 system with amp HK


Fuses blow when something is shorted. In this case it will be a semi-conductor of some kind. If the device uses IC for the main amplification then you are right to be worried!

The 158 amp is totally unsuitable for the JBL.
This is the specification of the JBL:
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  • they are also 4 Ohm speakers.
  • 158 is: Output Impedance / Channel
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