Hello
I understand this ICON 802 marine radio will not receive.
There are two things to check for. First check the speaker jack on the back side of the receiver also check the speaker plug and the connections. Make sure that the wires are soldered properly. If you have access to an ohm meter connect it to the plug leading to the speaker, it should measure 4-8 ohms. If the speaker checks ok then check the headphone jack on the front panel. The jack has a contact switch internality to disconnect the external speaker whenever a headset is plugged in. You can clean it by using a electronic contact cleaner spray a little into the jack and plug in a headset and turn the plug back and fourth. If this doesn't work, it would be inside the unit itself.
Hope this helps
Bruce
SOURCE: Some bands OK some not. No transmit, no readout on some.
its the problem of the frequency range its getting blocked at particular location.these can be solved by two options
1)first try changing the location of the unit from one corner to another corner.that should help to catch the frequency again if its getting blocked at particular location.this happens many times.but if changing the locan does not make any difference.then
2) get checked that the antenna of the unit is not catching the required frequency for the unit.so change the antenna also connect this external antenna as mentioned 50 ω (it comes wioth SMA Connector) that helps in catchinf the frequency.
you will get this at radio shack website. this will help.
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also in the unit there is a component which controls the frequency called microprocessor if that goes weak the unit slowly slowly stops receving the accurate signals and only the noise comes.so the micro processor in located internally in the left side.its a green and black colour mini chip circuit board.many times opening the unit and removing and cleaning the microprocessor and refitting it solves the problem but this is 50 --- 50 chance.
this all has to be checked what mentioned.
thank you for using fixya.
SOURCE: Can Receive but not Transmit
1) Double check your interference code eliminator and the Qt filter. Make certain they are all set identical.
2) If you are still having trouble, shut off the Qt filter.
3) Then if you still have trouble shut off the code. (Off is sometimes "zero" or "n" for no.)
4) If the above steps do not help you have either a defective radio, or a bad battery. Switch the batteries out of the working units to the non-working and see if the problem switches to the other units. If so, replace the battery packs. (Note: it takes more battery power to transmit, so the problem would first show up in the transmit area.)
Best regards.
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