Question about Philips Magnavox MRD510/17 Theater System
I have a magnavox MRD510 with no manuel. i can't tell which of the two wires coming from the speakers is (+) or (-). or does that even really matter as long as i put them all the same. both wires are gray but one has a black stripe with spaces in between the black. which one is (+).
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Posted on Jan 02, 2017
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Feb 11, 2011 | Philips Magnavox MRD510/17 Theater System
Jan 27, 2011 | Philips Magnavox MRD510/17 Theater System
Serious power issue.
Generally speaking, an amp protects itself from heat, shorts and overloads.
Overloads can be from excessive periods of high output 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 hands-on tech.
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