Question about Audio Players & Recorders
Hi, I just came across this post and I just got a GTP-750 and I too notice that it runs extremely warm when left on for a while. And I am suprised that there are no cooling vents OR a fan used...right now I have the top cover open about a 1/4th of the way just to let some circulation happen.
What do you have for a cooling method and the rectifier info would be appreciated in case I need repair on this unit - mine works great still and I am hoping to not have to go through any repair anytime soon due to overheating!
Please email me at email@example.com. Thanks!
Well ehy do you not put in 2 fans. 1 on the left and 1 on the right. Make the vents and build it in. You can use the standard size PC cooling fan. Just look for a 12 or 15 V supply and make sure to regulate it with an LA7812 Transistor, Very easy circuit. Will give you one if needed.
Posted on Jun 02, 2008
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Posted on Jan 02, 2017
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Jan 22, 2012 | Denon Audio Players & Recorders
Generally speaking, an amp protects itself from heat, shorts and overloads 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.
Check for loose speaker connections as a root cause for intermittent shutdown.
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