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View Full Version : MC 2500 Power Guard problem tangney 01-28-2008, 03:53 PM My MC 2500 has just started to click over from green to red on the right channel only The output thru the speakers sounds fine. I shorted the inputs to the amp when it was happening and it had no effect. It is red about half the time now. Any suggestions on what to look at??? Thanks much Mark Tangney ron-c 01-28-2008, 07:21 PM Does the amp do the same with the speaker wires disconnected? Power Guard is telling you there is a problem. Thanks, Ron-C tangney 01-29-2008, 01:24 PM Thanks for the response Ron. I did not disconnect the speakers, but I did turn the output off the them using the knob on the front panel. I thought that would suffice. When I get home tonight I will disconnect them. Thanks Mark Tangney tangney 01-30-2008, 11:19 AM Ron, I turned on the unit last night and ran it until the red light came on for the right channel. Then I turned everything off and disconnected everything from the MC2500. When I turned it back on, the right channel came on and stayed red, so it must be something in the amp. Mark Tangney dewickt 01-30-2008, 10:21 PM Sounds like a bad Power Guard comparitor IC or possibly a LDR with a bad emitting diode. tangney 01-31-2008, 12:48 PM Terry, thanks for the pointers to look at. I will check them out and see if I can tell if they are bad. Mark Tangney thedo 03-06-2008, 01:00 AM Pardon me for my ignorance, Dewickt, what LDR stands for ? masterlu 03-06-2008, 06:20 AM Pardon me for my ignorance, Dewickt, what LDR stands for ? Light Dependent Resistor thedo 03-06-2008, 08:40 AM Thanks MasterLu. ron-c 03-06-2008, 10:11 AM Long Distance Runaround... Ron-C (just kidding) WhiteSE 03-06-2008, 10:16 AM Long Distance Runaround... Ron-C (just kidding) A YES quote is always welcome! thedo 03-06-2008, 11:01 AM Long Distance Runaround... Ron-C (just kidding) ... I wish I was an EE major instead of Comp Science. I love electronics stuffs, especially audio equipment. |