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I have a Sony TA-FE370 amp. which I have sold and delivered by parcel force. The purchaser reports that after 5 mins. the case became hot and there was a burning smell. Can you geve me any idea why this has occurred please. Can an amp become hot in that way? Many thanks Trevor cole

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Usually that means that the amp was qworking too hard. Have the customer check to be sure that the wires to the speakers are not touching. Also, be sure that the rated impedence for the speakers matches what is required for the amp. If the speakers are rated at 4 ohms and the amp is expecting 8, this will occur as well.

Keep us posted.

Dan

Posted on Dec 19, 2008

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After 5 min. working time(5 min after the receiver was switched on) the sound from the left speaker disappear.(no matter which surround mode i use). Any idea?Thanks


The simplest way to trouble shoot is to swap the speaker connections at the back of the amplifier. If the problem follows the speaker than a connection, possibly internal to the speaker fails as the speaker warms up(voice coil).
If this swap indicates that the amplifier is the problem swap the channel inputs to confirm that it is internal to the amplifier. Also try a different source to confirm it is not the output of the source.

If not, than the amplifier would appear to have a problem. This would most likely require a qualified technician to repair.

Tthese amps are robust and you may have to choose an alternative speaker pair(example sub-room or speaker set 2) to maintain the set up you have. Also a internally shorted speaker may have the impedance low forcing an output protection feature.
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Mar 07, 2016 | Marantz SR-5200 Receiver

1 Answer

Shipped working receiver: opened parcel > no power


From which country did you ship the set? By which country did you receive the consignment? Is the household line voltage to both the countries are the same? If not, the power supply regulator section circuit to your Sony receiver should be checked. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Oct 29, 2014 | Audio & Video Receivers

1 Answer

DEAR SIR I have a Sony digital processing amplifier TA-AV790DG. its problem with the working no any function working and no sound. display only blink Protector.. what is the...


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 '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 and competent hands-on tech.

Jul 12, 2011 | Sony STR-DB870 Receiver

1 Answer

I have a sony str-de335 fm stereo receiver and


This can be shorted output transistors (common) or a defective voltage amplifier IC. WIthout taking measurements inside, there is no way for me to make that determination. In any case, this should be a relatively simple repair for a shop that repairs audio gear. Expect a parts cost in the $25-$40 range.

Dan

Aug 19, 2009 | Sony Audio & Video Receivers

1 Answer

Amp turns off after about 20 mins of bluray playback


Your amp is overheating. Provide better ventilation or rig up some fans. Onkyo amplifiers are known for getting hot.

Peace.

Marco

Feb 05, 2009 | Onkyo TX-SR606 Receiver

1 Answer

Bought some replacement speakers and the reciever seems to get ver hot!


Hello! Yes, you need to worry when a Sony gets hot!! You probably have replaced factory 8 ohm speakers with 4 ohm speakers. Look on the back of your new speakers and see what they are. Then look at the rear of your receiver by the speaker terminals and there will be a sentence like "8 Ohm minimum per channel". If your Sony says " 8 ohms " you need to use 8 ohm speakers.
Also, are you a using low level signal ( audio out ) to drive your sub or are you using high level ( speaker line )??? I'd use low level. Good luck!!

barneyluc

Oct 09, 2008 | Sony STR-DE635 Receiver

1 Answer

I have a technics su x502 amp & it works for a while then goes off & then comes back on after about 5 mins,the rest of hifi stays on its just the amp.


take out the cooling unit (the fan) and use a cpu fan out of a pc connected to an external power source like a 12v dc/ac adaptor and use it to blow constant cool air through the hole onto the heat sink. i know it sounds like a ruff job but it does work, my amp doesnt even get hot and it plays all night long without cutting out once. you will get noise from the fan constantly on but i just turn it up louder. this is just a ruff quick fix.

Aug 09, 2008 | Audio & Video Receivers

1 Answer

REAR CONNECTION


You can make your own or find someone who can. I hope this helps.085fcaf.jpg

Apr 09, 2008 | Audio & Video Receivers

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