My JBL MR-18.3 marine radio will only play 1 FM channel, nothing else?

SOURCE: jbl marine mr-17 all funtions are frozen

Hi,

Initially, have you tried a full hard reset? The reset button is at the panel at the back of the faceplate, bottom left side. Of course doing so will also erase all presets and user settings & configurations.

Additionally, pls verify that the multiple contacts pins are clean, free of corrosion and makes a positive contact with its mate at the rear of the faceplate. If the unit is used in a salty environment, it may be necessary to manually scrape of whatever blue green build up develops between the connector pins and the plastic insulator. You can try using an old toothbrush and WD40.

Further to check are:
1. the red, yellow and black wire are tightly connected where they are supposed to be connected. If the unit is used onboard, it might be to your advantage to likewise check the grounding system;
2. one of the rear connector is for a remote, pls likewise check that none of the pins are shorting and no presence of any corrosion.

If problem persists, it may be necessary to seek the services of a qualified professional as this involves opening the unit up and tracing the circuitry of the logic/controller circuit.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Marvin

• 85242 Answers
• Posted on Dec 05, 2008

SOURCE: 2006 toyota camry JBL radio; controls don't work

THIS IS A RADIO PROBLEM, THIS PROBLEM WILL REQUIRE THE RADIO BEING SENT OUT TO AN AUTHORIZED FACTORY ELECTRONICS REPAIR CENTER, THERE IS NO BLOWN FUSE OR THE RADIO WOULD NOT EVEN TURN ON.

SOURCE: system lights up - stuck in demo mode - sometimes CD player plays

if detach face may not be making good contact try removing wipe connections w/rub alchol and put back on

SOURCE: I am trying to find

You will find the maual you need by using the following link :

http://www.prospecelectronics.com/JBL%20MR6%20manual.pdf

SOURCE: 2008 Nissan Altima radio (AM/FM/CD) does not

2008 Altima radio-the sound just quit working. Everything else seems to be OK. I can change the radio stations, but no sound. Is there a fuse that could be bad?