Question about Marantz Audio Players & Recorders

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I have a marantz av550 pre amp/tuner. One of the audio outputs is not working. It had been cutting in and out for a while and now no output. It is not the cable, the amp or the speaker. Is this so

Used to go to alternate between working and low level of sound with lots of buzzing but now got getting anything.

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It sounds like the output transistors went bad What I would do is check all output transistors in the unit they are usually the large transsistors on heat sink that an ohm meter and check each transistor while unit is off and no power go base to collector then emmiter to base if you get o or continuity on those legs on any one they are bad .

Posted on Dec 08, 2012

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Posted on Jan 02, 2017

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SOURCE: marantz pm730 pre amp works ok no sound from main

Look at the final out transistors. I'm not sure if you would have transistors or an amplifier pack? It has 8 to 14 pins maybe. Look to see if there are any burnt components,cracks, or where something got hot. Most components break down because of heat.Also look for bad solder joints.

Posted on Oct 23, 2009

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the 2230 is a fine unit! There could be several things causing this problem, more than likely it could be dirty front controls which will require cleaning. It could be more serious problems such as pre-amp or main amp failures, dried up output coupling cap for the right channel. I would recommend having the unit serviced. These older vintage Marantz units are really special and deserve proper attention.

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One of your five amplifiers has blown its output transistors. Unfortuately, with SR18s, many components down the line from the outputs get fried as well, and (in my experience, anyway) it usually takes hours to track down all the problems. You can still use the unit as a preamp/tuner/surround processor by taking signal out at the pre-out jacks (you have to remove the five jumpers), and feeding it into external power amps, but repairs to the SR18's amp are probably going to be costly and complex. Sorry about the crummy news - hopefully I'm wrong!

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Multi Room Function on marantz SR-19


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Stereo connection


Hi spanky

Sorry for the delays in getting back to you. Been busy here this week.

OK. to connect the 2275 to the 1152,there are 2 ways of going about this.

You can plug the pre- out of the 2275 to the power amp-in of the 1152. In doing this you are using the power amp section of the 1152 and the preamp functions of the 2275. Your other gear like CD player, tape deck and so on also plug into the 2275.

the other(better) way is to plug the pre-out of the 2275 into the tuner inputs of the 1152, leaving the volume at about 40% on the 2275 and use the 1152 as an integrated amp. This means you are using the 2275 as a tuner only. When you do this, you will need to use an RCA lead to jumper the pre-out/poweramp-in connections on the back of the 1152, and the 2275 ... L to L and R to R respectively.

I am still wondering why you want to use 2 integrated amps (each having a preamp and a poweramp section) The only real benefit the 2275 brings to your system will be tuner functions. You could just get a tuner and run the 1152 to be an ideal rig.

Let me know what your ideal setup you are wishing to build would have. Speakers, other gear like CD, tape deck, etc.

regards
robotek

Jul 23, 2008 | Audio Players & Recorders

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