Geterdone wrote:
Now there is nothing...no static, no noise etc....checked all channels again, inside, A and B and outside C channels....When I turned it on the first time that it did not work, only channel A (one speaker of the set) worked....now nothing. I am not experienced enough to do the multimeter checks...I have a Craftsman, and it will do ohms, continuity and resistence...
steve
Steve,
I am an electronics engineer and spend a lot of time troubleshooting systems. This would be my plan:
Do the front panel lights and display come on? If not check the fuse. If the fuse is good, check the power plug coming into the back of the unit (remove it from the wall, see below).
Try the various input sources like FM radio, CD, weather radio, etc. If all inputs produce no sound output, something is wrong with the electronics or a plug on the back of the unit has become disconnected.
To check the plugs on the back of the unit, pull off the rectangular bezel, remove the four screws, and slide the unit out of the wall. Check that all of the plugs are securely attached. "Cycle" the connections a few times by removing and reinserting all the plugs a few times to wipe the contacts of any corrosion. The connectors on that system have inexpensive tin-lead contacts which can develop what is called "fretting corrosion". Cycling the connectors on/off a few times will wipe off any such corrosion.
Finally, as old fashioned as it sounds, you might try disconnecting all the wires from the back of the unit and then bang it a few times on the floor to jostle any internal connectors. Drop it from one or two inches from the floor on all sides to impart shock. The electronics will not be hurt by this. Modern electronics can withstand a lot of shock. Connectors are the weakest link in an electronic device. The age-old method of smacking the TV or radio worked as it caused shock to the sockets (connectors) of the vacuum tubes. Be sure to remove any CD/DVD before doing this.
If that doesn't do it, the system is dead.
