Question about KLH R3100 Receiver

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Schematics i have everthing but the thermal paste and the manual schematics. i have done this kind of work, but im thinking without the schematics its pretty much trash.

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Ask the schematic finding experts -
They will get it for you.

http://manualfox.com

Posted on Jun 30, 2009

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Without seeing the schematic, you may have to connect both A and B speakers, to make the B speakers work. There would be no damage. Both A and B switches use the same two amplifiers.

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My STR-DE945 5.1 channel, works "fine" just a small issue that started to bother me... when i start the thing the 5 speakers have sound (also the bass), but after like 5 or 6 minutes, i hear a...


Commonly your problem is a result in bad thermal connectivity on the power transistors.

Each power transistor is coupled to a heat sink with thermal paste / thermal conductor. When they run hot, they **** more power. There is commonly a thermistor which acts as a protection from blowing out the transistors.

There is probably a transistor that is nearing the end of its life. It will work for a while (when you power up the system) but after a couple of minutes, it starts to **** power, heat up, and trigger an thermistor up stream of the transistor, and it shuts the power stage of the amp off.

This is unfortunately a problem for a technician, or you would need to be armed with a schematic to be able to work with this problem effectively.

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I am trying to troubleshoot a Mackie SRM150 without a schematic. The problem appears to be in the mixer section. I can trace the signal to the input of this section, but have nothing at the input of the...


I contacted Mackie and they sent me the schematic but I had to essentially sign a "non disclosure agreement" in order to get it.

Call them, they are easy to work with.

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My Pioneer amplifier VSX-d512-s is coming up with the error message OVERLOAD and then immediately switching off. Has worked consistently for four years, this is the first problem


Sounds to me like a thermal shutdown. If it's no longer under warrenty, try opening the housing and spraying the inside with compressed air to free up any dust. Dust acts as an insulator and doesn't allow the heat to dissipate.

Beyond that, I'm not sure what else could be done without a service manual.

Oct 26, 2008 | Audio & Video Receivers

1 Answer

Klh reciever


You do not know what you have to replace. You test the component on board, starting from the amp, you need a multimeter and service manual schematic to do this.
After finding faulty component you will need to use solderer and thermal paste to replace it, and you need experience, or you end up damaging the board.
Ave you done anything like this before?

I am going offline now, if you have more queries I can answer tomorrow


thanks

Sep 11, 2008 | KLH R3100 Receiver

1 Answer

Protector appears on the screen


I have the same problem, i also have a STR-DE715. I have two thunder acoustic speakers and two 12in. punch subs. Now when i only play the subs i can go max volume, no problem, great bass the whole deal. Then when i play the thunder speakers i cant even go half way without the receiver shutting off and saying "protector" on the screen(both the speakers are 120 watt). From personal experience i think it could be the speakers youre using, either the receiver is giving too much juice and its preventing the speakers from blowing or the speakers need more power and the receiver cant give it. So a new set of speaker might be what you need. The receiver is 280 watts so something in that zone should work out. Also try turning off the sound field if you're using more than two speakers for the front output (i read this in the manual, you can pull up the users manual on www.manualshark.org and see if you can find something i might've missed) it supposed tp help it in one way or another. E-mail me at flores_j@live.com and tell me if your problem was fixed or not. Im pretty curious myself to find a solution to this problem. hope this helps!

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What kind of audio cable are you using and what dvd player?

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For those who accidently put thier CA-9025 in standby mode by hitting the timer button and no longer have the remote, I figured out how to turn them back on.

Turn on the power button and press and hold the Tuner button for at least 10 seconds. it should come back on :) Hope that helps.

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