It could be that the machine has turned off but it is in Demo mode for when on diplay in a store. It sit there running through all it's display options and possible combinations of features.
If you can set the clock on this, do so and it will shut down as usual and just display the time. If not this then not sure what else.
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Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.
Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.
You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.
If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.
If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.
No, but like any machine, it does need lubrication once in a while. You should purchase a manual for it (eBay). If the clutch has become stuck, it's time to call in a pro. Are you sure it's in "PLAY" mode? Check to be sure the service switch is in "PLAY." Does the motor turn? If yes, try pressing the reject button on the back. Maybe it's stuck thinking it's playing a record in an empty slot (clamp arm will be against the turntable). There is also a manual trip lever just to the right of the tonearm. lift up on it if the motor is turning and see if that triggers it. Go ahead, it won't hurt you. if the motor itself has frozen up from lack of oil, try putting some light machine oil (NOT 3-in-1 or anything paraffin based) in the oil cups on the side of the motor and letting it sit for a few hours. Then, turn the motor shaft by hand a little. This may free it up. if so, count your blessings and call someone in to give the whole mechanism a proper lubrication or something else will eventually seize up or wear out. Good luck.
press the " SET 'clock symbol' " button
a little red check mark with a circle around it pops up to the lower right of the time
press and hold either the " TRK >>| " button (to move the time forwards)
or the " TRK <<| " button (to move the time backwards)
when you are finished changing the time, the time change indicator (the little check mark with the circle around it), will go away on its own
you can repeat these steps as many times as necessary until you get the time right -- the numbers change pretty quickly when you are holding down the change buttons!!!
Just saw your unsolved problem,well let me solve it. After i posted the solution for that problem,i went out for a walk.When i came back i saw my account was credited.I checked out my recent comments and found out that the solution was accepted by myrnahough
I replied back to him with that link which i found,but i never saw what you posted before i gave him my solution.Only after posting mine i found out that we both gave him the same links..
This is a safety feature and can not be shut off. The system is detecting a problem in the last output stage of the amplifier and is shutting down to prevent further damage. I suspect a bad coupling capacitor in the pre-amp stage. This is a relatively simple repair for an experienced servicer. Figure on $10 or so for parts plus the local labor rate.