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TECHNICS RECEIVER OVERLOAD MESSAGE

Last response: in Home Audio
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April 20, 2010 2:45:24 AM

I have a Technics SA-AX920 receiver. With or without speakers connected, I get the "overload" error message after it's been on about 10 minutes (no sgnal). This happens even with the cover off, and the hottest component is the power transforner at about 105 degree F.

To help all of us who are having this problem, we need someone to tell us what the system is actually mesuring. Is it, current? Is it temperature? What are the sensors and where are they?

Thanks
May 10, 2010 2:20:51 AM

ron256 said:
I have a Technics SA-AX920 receiver. With or without speakers connected, I get the "overload" error message after it's been on about 10 minutes (no sgnal). This happens even with the cover off, and the hottest component is the power transforner at about 105 degree F.

To help all of us who are having this problem, we need someone to tell us what the system is actually mesuring. Is it, current? Is it temperature? What are the sensors and where are they?

Thanks


The output transistors are shorted, take to service center. $$$ to repair.
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May 10, 2010 3:12:38 AM

Output transistors are not shorted. Re-soldered the speaker terminal connections on the main board and that solved the problem. The service center will not be getting my $$$$$ for doing this for me
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July 13, 2010 5:06:19 AM

I am having the same problem and its frustrating cause it seems to happen sporadically and usually just when I have guest over....can you tell me the steps you took, where you exactly you resoldered or how can I tell is my output transistors are shorted, when I resolder I am bypassing those components?? Thanks in advance
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July 13, 2010 5:09:22 AM

*** Correction ***

I am having the same problem and its frustrating cause it seems to happen sporadically and usually just when I have guest over....can you tell me the steps you took, where you exactly you resoldered...Thanks in advance
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April 4, 2012 12:05:01 AM

I have also a technics AV integrated amo. The only solution that i did was to clean the contacts of the fan inside the receiver.. WHat imean is that you're gonna open the top cover and the back panel. the blower fan will be separated from the main case. Then use a fine sand paper to clean the fan contacts especially the copper contacts between the fan on the back panel and on the main unit fan circuitry. there's also a copper contact in it. thats the only solution that is needed to bring back your Amplifier not over loading again. My technics now functions normally.
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April 6, 2012 11:40:59 PM

I have a 15 year old Technics 110 Watt per reciever and it still runs great today. I did blow the chasis out with some compressed air once or twice and it seems to run great. Technics used to be the high end of the Panasonic brand.
Dave
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June 20, 2012 1:02:23 AM

soundguruman said:
The output transistors are shorted, take to service center. $$$ to repair.



I can buy the parts but am not sure if I can isolate the ones to replace. They are BU2090's so I hope that will tell me where they belong. Are there a "couple" of these in the unit or several of them? Any suggestion?
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