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Technics amp model saex120. information on digital front reads "system overload" and will not produce sound.

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The audio amplifier IC are damaged you need to replace them.

Posted on Jul 04, 2008

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I have a Sony STR-DE845 5.1 Channels Receiver and it has been functioning flawlessly for years. Recently though, it has started producing a loud "pop" sound within a minute after turning it on....


You probably have a discrete component failing inside it.


Generally speaking, an amp protects itself from heat, shorts and overloads.


Overloads can be from excessive periods of high output 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 'naked'. 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 hands-on tech.

Dec 22, 2010 | Sony STR-DE845 Receiver

1 Answer

I'm considering buying the 180636 "surround sound bar speaker system." My question is, is this JUST a speaker system, which needs to be connected to a separate amplifier or "home theater...


The bar speaker system needs to be connected to an amplifier. What the bar speaker does is replicate a five speaker home theater system using just an amplifier.

The only thing that will give you a better sound quality is some type of amplifier/speaker set-up, wether you choose to have an amp and two speakers or and amp with five speakers and a subwoofer is up to you.

Nov 30, 2010 | Audio & Video Receivers

1 Answer

Stops working and reads Overload


hi there i have had this problem with technics amplifiers generally with them it was negative and positive mix up between input terminals for the speakers or in other case's running the amp with 2 many speakers.
eg. having 2 speakers Bi wired into 1 input making a 6.1 receiver into a 12.1 which makes the amp struggle causing overload or the worst case is a power unit problem.

Aug 01, 2010 | Panasonic SA-HE200 Receiver

1 Answer

OVERLOAD


First of all the KEF is a powered sub which means that it wants a line level signal NOT a speaker level. Send the signal from a tape output or pre-amp output to the sub input. The overload is because the impedence load for the speaker output is too low and looks like a short to the amp. Continued attempts to connect the system as described will result in damage to the output section of the amp.

Please let me know if you need more info.

Dan

Feb 03, 2010 | Technics SA-DX750 Receiver

1 Answer

I have no sound and it reads overload and tells me to turn off power. what do i need to do?


Hi

I have the same problem and a common problem with this model is :
"Technics models are sort of notorious for bad solder connections, especially
at the output IC's and regulator transistors. "

I hope this helps you

Sep 08, 2009 | Technics SA-AX540 Receiver

3 Answers

Overload at medium (4-6) volumes. Can you adjust or disable the overload protection on these Technics amps??


try this mate:
http://www.electronicspoint.com/googlesearch.php?cx=002919058480771089906%3A03mranmmdze&cof=FORID%3A10&ie=UTF-8&q=Technics+SA-GX550&sa=Search#862

May 23, 2009 | Technics SA-EX400 Receiver

2 Answers

Receiver overload problem


The overload message is indicating that a problem was found and the system is shutting down the output section to prevent further damage. There are probably poor connections on the main board and failing capacitors in the front end. Expect a parts vcost in the $10 range. Add in the local labor rate for the total repair bill.
Dan

May 23, 2008 | Technics SA-DX930 Receiver

3 Answers

My jvc rx-6010v is OVERLOADING?


The very FIRST thing to check is to make certain ALL of your speakers have an IMPEDENCE of 8 OHMS. (JVC - and others - say SIX ohms, but 8 is the "standard" you should use.) Virtually all speakers of even modest quality will include this specification on a label on the back of the speaker. You CANNOT run more than (2) TWO speakers with 4 OHMs impedence on ANY amplifier (technical discussion too long!) [NOTE: The internal overload protection system you mention is designed to help prevent permanent damage. However, you cannot re-set these systems yourself. Your dealer or authorized JVC service center must do this. Note, though, that if you have attempted to "cheat" the system several times, damage CAN be done that requires servicing.] But, before you take the unit in for service, there is one more "test": check for shorted and/or mis-connected/disconnected speaker cables/wires. Visually inspect connections at the receiver and speakers first. You might find something obvious! If everything looks okay, then disconnect ALL of the speakers; and reconnect and test them one at a time (at relatively low volume.) For example, reconnect the left front speaker, test the system; THEN add the right front, test the system,and so on, ADDING one more speaker each time - FIRST MAKING SURE EACH OF THEM HAS AN IMPEDENCE OF AT LEAST 8 OHMS! IF there is a short (or bad speaker) this will help isolate it. Hopefully one of these "fixes" will work for you. GOOD LUCK!

Jul 10, 2007 | JVC RX-6010V Receiver

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