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Troubleshooting

If the receiver is not working as it should, the following suggestions might help. If you follow the suggestions in this chart and the receiver still does not work properly, contact your local RadioShack store for assistance.

Problem

Cause

Suggestion

 

 

 

 

 

 

Power does not turn on.

Power cord is disconnected.

Plug in the power cord.

 

 

 

 

Protection circuit is activated.

Unplug the power cord, then plug it in again.

 

 

 

The receiver does not respond

Static discharge has affected the re-

Unplug the power cord, then plug it in again. (If

to button presses.

ceiver.

static electricity is a problem, use the remote control

 

 

as much as possible.)

 

 

 

No sound.

Incorrect connections.

Check and correct the connections.

 

 

 

 

The mute function is activated.

Press MUTING.

 

 

 

 

The volume is turned down.

Turn up the volume.

 

 

 

 

Speaker wires are disconnected.

Connect the speaker wires.

 

 

 

 

Speakers are turned off.

Press SPEAKER so SP A appears on the display.

 

 

Disconnect the headphones if connected.

 

 

 

 

TAPE 2 function is engaged.

Press TAPE 2 so TAPE 2 clears from the display.

 

 

 

No picture when you select a

The selected video source is not set

Correct the problem with the selected video source.

video source.

correctly.

 

 

 

 

 

Incorrect connections.

Check and correct the connections.

 

 

 

High noise level.

Station not correctly tuned.

Adjust tuning.

 

 

 

 

Antenna not connected.

Connect the antenna.

 

 

 

 

FM antenna still coiled or is not

Stretch both ends of the antenna taut and reposition

 

pointing in the correct direction.

the antenna.

 

 

 

 

AM loop antenna not pointing in the

Adjust the AM loop antenna.

 

correct direction.

 

 

 

 

 

Noise is coming from another electri-

Try using an AC line noise filter to reduce the noise.

 

cal appliance.

 

 

 

 

Automatic tuning does not stop

Stations are too weak.

Use a better antenna.

when searching for stations.

 

 

 

 

 

Cannot make copies of video

Tapes are protected by a copy pro-

You cannot make a good copy.

tapes.

tection method.

 

 

 

 

 

Video connections are incorrect.

Check and correct the connections.

 

 

 

Remote control does not work.

Remote is set to other device.

Press the CONTROL MODE button for the device to

 

 

control.

 

 

 

 

Batteries are weak.

Replace the batteries.

 

 

 

Remote does not control cas-

Cassette deck or CD player is not

The feature only works with Optimus Professional

sette deck or CD player.

compatible.

Series components.

 

 

 

 

Control cable is not plugged in.

Properly connect the control cable.

 

 

 

 

Audio cables are not plugged in.

Properly connect the audio cables.

 

 

 

38

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Optimus STAV-3790 owner manual Troubleshooting, Problem Cause Suggestion
Page 37 Page 39

STAV-3790 specifications

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