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I have a problem with sansui amplifier rz-5100av when powered it just writers protector

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Sansui RZ 1500 II-Manual

i have the same problem but my receiver doesn't change sources and its blocked on the last station llistened. the problem appeared when i washed the face of the receiver with a special spray. i think that i have done something very wrong like a short cut in the command processor. any help, please?

Posted on Nov 08, 2008

dunnbiker
  • 8546 Answers

SOURCE: Sansui Amplifier RZ 7900 The surround

I can't find a manual but I'll take a stab.

When you say it fades are you being literal? In the digital world things usually change suddenly or stop altogether.

I'd look at the receiver for an indicator that indicates the multichannel nature of your incoming digital audio. Many have little maps or icons showing the number of speakers supported at any given time. That's a function of the incoming data stream and/or whatever the audio source it carries. For example, when loading a DVD I usually see 2.1 indicated on my unit while the low-tech menus and previews are active. Once the multichannel program commences the 5.1 indication lights up.

It almost sounds like the digital bitstream is being corrupted and the receiver shifts down to whatever it can manage to decode from it. Check the cabling that carries the audio. If it's optical instead of copper, I'd check to make sure there are no tight bends or kinks in it anywhere.

Posted on Dec 23, 2010

dunnbiker
  • 8546 Answers

SOURCE: Please let me know the

http://www.springair.de/Sansui-RZ-3000_detail_13525_326_SESS-51aeaa5f0105cfe40d86469ac9c7cb85.html

In German but it says 2x80 watts. I'd guess 1980's.

Posted on May 28, 2011

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1 Answer

RZ-5100 Has Protector signal and wont turn on


Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'nekkid'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

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You could refer to the instructions presumably available for the unnamed sub. THAT would determine the methods it can use.

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I am fixing a sansui rz-5000av receiver /amp. the problem is the power supply,it does not switch on. the fuse is fine, capacitors are all ok. But power does not reach connector for the standby supply to...


So you're saying ac doesn't get very far into the unit. THAT should be easy to diagnose with CARE since ac is usually passed unmodified to the fuses and power supplies, maybe through a relay. Get a digital voltmeter and find out where it disappears after getting into the unit.

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I have this unit. It is built with disable links for each of the channels, which are easy to replace. The replacement part is only a few dollars.

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www.dvddemystifiziert.de/codefree_en/sansui.html
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No that's how to describe a problem, folks - with details. Using internal FM as the source is always the preferred way of troubleshooting system-wide receiver audio problems (no cables or setting in the way).

Does the sound come on immediately with power and then fade or is there a small delay while the electronics stabilize, a click and then sound that fades?

The fizzle probably means something is rapidly overheating or a capacitor is malfunctioning. If both channels do it, I'd suspect a common power supply problem. Can't help much more than that.

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