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Amplifier main channel non operational.

The main right front channel on my kenwood krf-v5200d surround reciever has stopped working. First it blew the speaker and now the amp channel is not working.

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First pull out the power transistor then biased the output terminal. base,emitter have dc volts .4 to .5 collector to emitter have full voltage. if this voltage are in ur pre amp buy new trasistor

Posted on Sep 22, 2008

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3 Answers

KENWOOD KA-99 INTEGRATED AMPLIFIER MANUAL


Hi...

Does it look like this?

http://www.hifiengine.com/manuals/kenwood/ka-9x.shtml

Mar 27, 2010 | Kenwood Audio Players & Recorders

1 Answer

7.1 preamp output


called onkyo and kenwood they explained in detail how to hook up.

Jan 06, 2010 | Onkyo M-282 2-Channel Amplifier

1 Answer

I have 1 center channel pre-out on back of my kenwood receiver. how do i hook it to the inputs on onkyo m-282 amp and then to center channel speaker?


Unfortunately can't connect it that way. The pre out is only meant to go directly into an amplifier that has all of the same inputs (front/rear, center and surround), not a standard receiver. (Pre amp to amp only, not pre amp to receiver) If your Onkyo doesn't have all the same inputs as your Kenwood preamp has outputs you will just use your standard left/right outputs from the Kenwood to your Onkyo input (CD, Tape, Phono,DVD etc) then use the outputs (front/rear, center and surround) from your Onkyo receiver and connect directly to your speakers..

Jan 01, 2010 | Onkyo M-282 2-Channel Amplifier

1 Answer

Hi i have a krf-v5030d and i am having trouble woking out how to connect it to my panasonic 37'' plasma th37px70b and my sky plus box can you help me please .thanks john


Hi John,

I have the same amplifier, a Sky + HD box, an LCD TV an surround speakers. We wont go into the Wii, PS3 and PC also hooked up. Essentially the best way to go (whatever you connect up) is to split the video and audio signals.

Sky: The Sky box has an audio outputs (left and right channel) found at the back of the box. You get some twin audio cables, plug into the back of the Sky box and the other end into the Kenwood Amp (for example we use Video 1). This means that the sound from Sky can be found on Video 1 on the Amp.

You take the video signal (picture) from Sky using a SCART cable and put into the back of your panasonic TV. This does mean that you can watch a picture without the sound and listen without a picture. The Amp remote controls the sound, the Sky / TV remote controls the picture.

You may need to tinker with some settings on the Amp, for example on the front of the Amp you will find a source button, toggle through the 3 or 4 options to give you the right sound. But essentially that should be it. The same process is used for any other things you want to add, like a DVD player, a games console and so on.

Hope this helps.

Regards, Mohammed

Oct 05, 2009 | Kenwood Audio Players & Recorders

1 Answer

Service manual and schematic circuit diagram required for kenwood amplifier KRF-V6050D


This manual is only available on paper as far as I know. What is the problem that you are trying to solve?

Thanks,
Dan

Sep 24, 2009 | Kenwood Audio Players & Recorders

1 Answer

Yamaha RX-797 iPod Integration


I have a question first... are the 901's amplified by a separate amp as they should be in a multi-channel (non-stereo) setup?

Better yet read the following then decide if you have iy set up right to begin with. If so, I'd just treat the Ipod or Mac as auxilliary inputs on the receiver. :

I wrote most of this for a different receiver, but if you account for minor differences to your receiver this will work just fine.

There's good news and bad news. The bad news you need a separate amp because a multichannel receiver with Bose 901's attached as recommended for a standard stereo receiver will only sound right in STEREO on stereo analog material. The other speakers around the room are not designed to receive its Active Equalization and if you engage your Tape Monitor you will NOT BE ABLE TO HEAR DIGITAL sources at all. Tape Monitor is for analog stereo material only and on modern AV receivers it disables any digital inputs so you really can't use the Tape Monitor circuit or attached devices for modern digital sources. However, you can still employ the various DSP options to spread 2-channel analog source material around the room. I do.

The good news. I have a setup similar to what you want to do and it works great!

A separate stereo amp for the 901's was my solution. I run a Carver AV-406 (5-channel amp) for my 901's in Front, 2 Subwoofers and the Rear Surround channel, with the Active EQ between the receiver Front L&R Outputs and the 901's amp channels. My receiver controls everything and just drives the Center and Surround speakers.

You could get by with just a stereo amp for the 901's. A Carver M-200 is a good efficient amplifier that would have you cooking just fine (2x100W). Run it with the Active EQ between the receiver Front L&R Pre-Outputs ** and the 901's amp channels.

** Front Pre Out (or one of your analog Tape Outs) >>> Bose EQ Amplifer IN, then
Bose EQ Amplier OUT >>> new amplifier IN.

Attach the 901's to the new amp, set its volume to Max and run through your receiver's speaker level setup.

Write off the Tape Out as an input if you use it to extract the Front L&R channels. DO NOT monitor it or you'll chop the 901's out of the signal path AND kill any digital source audio in the receiver.

Jul 02, 2009 | Yamaha MX-D1 2-Channel Amplifier

1 Answer

ADCOM GFA7500 problem


I don't have experience with the 7500 but I had a 7000 with multiple bad channels (red light lit). The problem was bad filter capacitors on the amplifier boards. The large black filter caps (two per channel) were leaking on every amp board. Its a relatively easy repair if you can solder.

FYI you'll probably need a set of small hex head drivers to open the unit.

Feb 21, 2009 | Adcom GFA-7500 5-Channel Amplifier

2 Answers

Ppower on then standby problem Kenwood KR-V8060


This fault may be similar to a Harmon Kardon AVR1550 fault I recently encountered. I did all the usual checks e.g. testing for presence of DC on speaker outputs etc. but all seemed fine, then the fault cleared! Next day it re-appeared and attention was (falsely) given to the protection circuits as the amplifier circuits themselves were considered to be in order. The HK uses both voltage and current protection circuits and it was discovered that the current protection circuit was operating. Eventually the fault was found to be one of the 0.39 Ohm 3W metal oxide resistors that had gone high in value on the left hand channel. Of course your amplifiers fault may not be due to this but the reason for going into standby would probably be the same i.e. due to amplifier protection circuits operating. You need to check out all the output devices and those resistors on every channel, even surround ones you may not be using. Hope this helps.

Nov 01, 2007 | Audio Players & Recorders

1 Answer

KENWOOD Power Amplifier


The power amp does need an imput signal ie. tuner, cd , and such to play. You can use the power amp with the other equipment.
Good Luck
BIG RED

Oct 30, 2007 | Yamaha DSP-A3090 7-Channel Amplifier

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