SOURCE: I have a M&S Systems Model MC602 Master Unit.
the only way that this door bell is ringing is when you manually action it ...right>???so ...the issue is on the button (switch ) or there is a short on the wires that goes to the button ....so ..if I was in your place ..I will power it off..and open the switch button (the one from the door that it pressed to action it ) ..and see if it is still ok ..See that if yo remove one wire ..is stopping ..if does..this means it is the problem and it needs replace ..or checked for a short circuit ..if this will not stop it ..means that the wires are making contact somewhere on the way ...and you have to go along them and check ..until find the problems ..If you find no problem along the buttons wires..than move on the unit itself..and open it to check for a short circuit between wire that should not suppose to touch ....that's almost all you have to do ...if youdo not find the issue ..is probably internal one in the unit itself ..and probably the fastest fix is to change it ..
SOURCE: my radio on the mc602 stopped working. The entire
sounds like a internal fuse look in your manual and see if it may have a heatsink switch that disables the radio if the heat levels get too high.
Based on the problem description, there is nothing you can check to try and get the radio to work again. The most likely cause is a Tuner Module failure due to electrical surge. You will need to send the MC602 to us for service. We will need you full address, phone number, and the serial number or date code from the back of the MC602. The serial number/date code will be on a white sticker and may have a barcode on the sticker as well. When receive you information, we will issue you a Return of Product Authorization (RPA) number and instructions for returning the unit. There will be a repair charge and that can be provided with the RPA number.
Sincerely,
James Williams
Senior Applications Engineer
Linear LLC
Technical Services
(800) 421-1587
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