Question about Kenwood VR615 Receiver
After running my reciever for some period of time the remote will suddenly refuse to work. This is not only the receiver remote but also the TV remote which is set up to work with the receiver. None of the functions will operate. This could continue for some period of time and then for no specific reason it will start to work again. During these periods all the functions available on the unit it'self are fine. The unit is situated in a well ventilated area and does not feel to be overly hot. The sound volumes being generated are not exceptionally high.
Your problem could be as simple as a cold solder connection on or between the remote "eye" sensor and the microprocessor. it also could be an intermittant Eye sensor assy. The real only way to trouble shoot this problem would be with an osilliscope. You would monitor the waveform comming out of the sensor while its working and see whats it looks like when its not working. if its good all the time comming out of the sensor , then its a rare thing but could be an intermittant microprocessor as well/ if your not a tech theres wreally no other way i can assist you in this repair as its a waveform kinda thing. call the manufacturer in your owners manual, Or try this # 1-800-KENWOOD Good Luck
Posted on Jun 08, 2006
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Posted on Jan 02, 2017
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Jul 03, 2011 | Harman Kardon HK 3270
Generally speaking, an amp protects 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. Eure 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.
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