Listen Technologies Receiver Troubleshooting LR-300, LR-400, LR-500, Receiver has no power

Receiver Troubleshooting

Receiver Troubleshooting - LR-300, LR-400, LR-500

The receiver has no power.

Make sure the unit has either fully charged batteries or a Listen approved wall transformer con- nected. Make sure the VOLUME knob has been rotated to the ON position. If this does not work, try a different set of batteries. Make sure the batteries are installed properly.

There is no audio.

Make sure you have turned the volume control up. Make sure the earphone is plugged all the way into the jack on the top of the unit. Make sure the transmitter is broadcasting an audio source. Make sure you’re tuned to the same channel as the transmitter (see page 56). If the RF signal is too weak, the receiver will squelch and mute the audio source; move closer to the antenna or make sure the transmitter’s output RF power switch is set on “FULL” (LT-800).

The audio is distorted.

Make sure you’re receiving on the correct channel. Make sure the audio on the transmitter is not turned up too loud; this will cause distortion. Make sure the earphone connector is pushed all the way into the jack on top of the unit. If you’re using the LR-300, re-scan the channels to find the clearest channel (see page 50). Make sure the SQ switch on your transmitter and receivers is turned ON (or OFF, if some of your equipment is not SQ capable). Make sure you are not too close to the transmitting antenna. If you can’t get farther away from the antenna, turn down the RF output power on the stationary (LT-800) transmitter.

There is interference.

Try different frequencies on the transmitter and receivers until you find a clear channel. If this does not work, try a different frequency band (i.e. if you are using 72MHz, try 216MHz or vice versa). This is accomplished by returning the equipment to Listen (at no charge). Please contact Liten technical support for assistance (see page 69 for information).