Re: Denon AVR-1912
All 7 resistors are bad on that channel. Got the replacements just need to install. Got slightly large wattage resistors this time. This shouldn't change the sound any right? Or should I change both left and right side?
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Re: Denon AVR-1912
When you connect both speakers to left and right, amp powers on, flashes blue then shuts down and flashes red. With just left speaker connected, amp stays on and plays audio until you turn it above -30db, then shuts down again. Will have to check those resistors when I get some free time,Leave a comment:
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Re: Denon AVR-1912
They should be very close to the STK part. Usually large white ceramic and likely to be two resistors combined in a three leaded part. And also low value like 0.22 ohm.
When these resistors blow open or go party high in value, all might seem ok until audio signal is applied. The protect fault sensed can be DC or overload.
What do you mean by "not connected"? What is happening when it is connected?Last edited by rievax_60; 10-26-2013, 11:38 PM.Leave a comment:
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Re: Denon AVR-1912
Thanks for the info. No I do not have the service manual. Are the resistors on the amp board? And if those are bad on the right channel will that cause the amp to shut down even if that channel is not connected?Leave a comment:
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Re: Denon AVR-1912
There is circuit that detect for DC at the output of the amplifiers and also detect shorts or over current of the output sections. I would check the DC voltage of each amplifier output to see what kind of DC offset they have at the output feeding the speaker protection relays.
Did you find service manual for this unit?Leave a comment:
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Denon AVR-1912
Have this receiver and with no speakers connected it would power up and flash blue with display on the screen then click and shut down flashing red. Traced it down to the front right channel having blown STK chips and a bad Transistor. Replaced all three parts with OE parts. Amp now powers on and stays on with no speakers connected. With front left and front right speakers connected amp acts like when I first got it and shuts down. With just the left front connected it out puts sound. But after turning it up past -30db it shuts down again and flashes red. Any ideas what else could be shorted? Could another bad part in the right channel cause a shut down even with just the left connected?
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Hello,
I know some might say... just buy another one. Sell it as parts..!
So had this AMP for quite some time. Recently I saw light smoke coming out of the AMP. Had my fire extinguisher close by. Just kidding. Turned immediately all devices off from mains.
Let things cool a bit, and opened up the amp device. I clearly saw on the main board which hosts the 5X amp (5.1), 3 10 ohms 1W resistors had their leads looking black, while the rest of the remaining 2 x 10 ohms were brownish as being installed from factory.
Spent some time downloading the Service...06-11-2024, 08:38 AM -
Hello
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