Question about Marantz Audio Players & Recorders
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Posted on Jan 02, 2017
The problem you are facing is the speaker protection is turning on to prevent the amplifier from damaging your speakers. It will need some service work done to it to prevent it from happening. I suggest you get it attended to sooner than later, as the problem will be caused by dry solder joints that will need to resoldered, or a semicinductor that is failing. If you are a gun with a soldering iron, you could do this yourself. Check about parts of the amp that runs hot, particularly transistors and resistors in the output stages. resolder all output transistors, and any parts that are mounted to a heatsink. Also focus on areas of the PCB that has discoloured. This is often where the problems occur.
I am more than happy to answer any other questions you may have about it, just give me a hoy :)
Thanks for using FixYa, If you consider the advice I have given you as sound, a FixYa rating is a great reward for my efforts to help you. Cheers.
Posted on Jun 02, 2008
SOURCE: I believe an amplifier problem
I had a problem with no audio and I recently found the fix. When thesub still worked and you turn it on you hear one relay click and thenabout 5 seconds later a second relay clicks and the audio comes on. Theproblem I had lies with that second relay. When you take the case apartthere are 4 circuit boards. The big board with the two big bluecapacitors is the main board. Well next to the two blue capacitors is ablue relay. That relay had a pin that came un-soldered from the circuitboard. I re-soldered that pin and the sub works just like new. If yougo here http://www.eserviceinfo.com/downloadsm/20627/sony_sawm500.htmlyou can find a free service manual that has the wiring schematics forthe amp. Hope this helps!
Posted on Jul 13, 2008
SOURCE: Vintage Stereo Connection ???
Where to start :) I am excited thinking about them :p You got 2 totally cool pieces of classic vintage gear there in the C2 and the Marantz. I have a C2 preamp myself (gathering dust but wont sell it cos its excellent) and the marantz would be totally cool to have(but then I am a little biased towards 70's vintage marantz). They ruled the roost in HiFi amps throughout that decade.
Because they are both integrated amps, you could use them as standalone systems with a pair of speakers, and just plug your favourite gear into them. If you just wanted to run up a nice sounding HiFi, I would sell the kenwood gear and just keep the Marantz. The Kenwood kr1100 has the edge in power, so if it is grunt you are looking for use that. Because vintage sound is all about stereo, you only really need an integrated amp to get great results.
the specs are
# Kenwood Model Eleven G (KR-11000G) Receiver
120W per channel min RMS, both channels driven, at 8 ohms from 20 to 20.000 Hz with no more than 0.03% total harmonic distortion.
Dynamic power output 440W at 4 ohms
Power bandwidth 5 Hz to 70.000 HZ
Frequency response 5 Hz to 100.000 HZ -1.5dB
Signal to noise ratio 115dB
The marantz is a little lower in power at 75rms a channel, but will have the sonic edge in vintage sound over the kr1100. Look them up on ebay and you will find that they do have some value to collectors and people seeking nice tone. There is an 1152 for sale here for AU$900
Best bet is to fire up the 2 integrated amps,and see how they are going. Run them for several hours to be sure there is no strange noises and crackles. Then decide if you want power or finesse.
You could also run both amps from the C2 preamp by connecting to the Amp in connections to the rear of the integrated amps.
happy to talk to you more about it, hit me with a Fixya if my advice was helpful to you. I would keep the marantz, use that and sell the rest and buy some nice speakers:)
Posted on Jul 21, 2008
SOURCE: my marantz sr19ex amplifier has
I am working on one right now, it has blown output transistors and several upstream transistors and burned resistors as well. This channel of the amp will need a rebuild.
Use a volt meter and, with black lead on the chassis, check the voltages at the 3 conductor connectors going to the board at the rear speaker terminals. These are the outputs coming from the amp and if there is voltage on any of these (unit at idle, no volume), the protection circuit will keep the output from getting to the speakers. High voltage here means blown amp, most likely.
feel free to contact me regarding the repair... www.irebuildmarantz.com
Posted on Nov 08, 2008
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