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Hifi stand by light is on when switching it on it turns staight off onto stand by again

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Sounds like it may be fried. Test the output transistors and the predriving circuit for them. Good luck.

Posted on Nov 28, 2008

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When I turn it on it switches its self off staight away with overload displayed on it. How do I stop this from happening


If this is a pioneer receiver, than there is an amplifier problem in the unit that needs to be repaired before it will stay powered on.

Dec 25, 2012 | Audio & Video Receivers

1 Answer

Onkyo tx-ds989 goes to stand by mode just playing for 3 second ... rest every thing is ok I just hear a click sound (relay switch off) and it goes to stand by mode again switch it on .... same thing...


Check the speaker wiring on back that it is not shorting against one another, output ic's may have bad solder connections and should be checked carefully.

May 28, 2012 | Onkyo Audio & Video Receivers

1 Answer

How to reset marantz sr4003


marantz SR 4003 how to reset (hard reset ) remove power plug from power .Take cover off locate ic 12 (24 c eeprom) short pin 5 to ground while plugging the power in .Unit will show clear on fl screen .if the unit trips again check channels.

Jan 04, 2012 | Marantz SR4003 Receiver

1 Answer

Onkyo tx-8211 protect


It's unlikely you can. Most hifi shops can though.

If you're still reading, open it up, and look for a switch of some kind. It may not even exist, but I'd say it's the best thing to look for when doing something considered mediocre at hifi shops (if it was difficult and interesting, they wouldn't find it so boring). Maybe it's a button. It will probably be labelled protection or reset or something similar.

So, look for a switch, or something similar. I have no idea where it would be because I've never dismantled such a thing. The other option (if you haven't done so already) is unplug it from the power and leave it for a while (overnight may be the best bet). This may fix it for you, and it's easier than undoing all those screws.

Jan 13, 2010 | Onkyo TX-8211 Receiver

1 Answer

Trying to hook up 2 Hi Fi speakers to a reciever


Red left to Red left speaker
Black left to Black left speaker

then repeat for right speaker

turn on amp play somthing quite to start, check all is working. To check speakers are in phase play a bit louder and stand exactly in middle, bass should be defined and central, it helps to close eyes and listen. If not central and defined change over Red and Black on one side only then listen again with the same test.

Start flat with eq section adjust as you like when listening to something you know and like.

After all is working ok then make it louder.

Sorted!

Sep 16, 2009 | Audio & Video Receivers

2 Answers

My Harman/Kardon AVR 140 is stuck on stand by mode


I have the same problem on my AVR 1550 - its been bugging me for ages then it works again, then it doesn't ...

Aug 28, 2009 | Harman Kardon AVR 140 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

2 Answers

When i was hooking it up it made a big spark and now it smells like it is fryed


please always turn off your system befor any connection----clean contact points of socket(the place where you put your jack)with any contact cleaner-connect your cable again and turn power on and try in low volume and increase the volume gradually until you get good sound-----if all above failed you will have hardware problem inside your receiver and can fix through field technician

Aug 06, 2008 | Audio & Video Receivers

2 Answers

Power on but no display on Denon AVR 3705


By now the folks who asked this have certainly solved their problem, but in case anyone else has this same question:
If the color change from red to green on the Power button indicator light and stays that way, the receiver is most likely working fine, it's just that your front-panel display is OFF.
1. Check the DIMMER mode by pusing the buttom on the front panel -- it may be set to OFF.
2. Push the PURE DIRECT button on the front panel (or remote control) -- it may be ON, which turns off almost all of the front-panel display. (Alternately, change the AV source, which turns Pure Direct OFF.)
HOWEVER if the power light flashes rapidly, the amp's overload protection circuit may have been triggered by a feedback loop or other problem, such as a shorted or bad cable connection. Turn off the power and unplug the receiver. Look for problems starting with shorted speaker wires or cables. Then make sure the receiver's not still hot (wait 5-10 minutes to let it cool), and remove obstructions or anything blocking the top vents. Plug it back in and power up again. Immediately change the Source selector to something unconnected, and turn the Volume DOWN just in case there's a feedback loop (hum/squeal/noise that can overload things and cause the protection circuit to trip again). If you can see the display, go to a low level (around -50dB should be fine) before the delayed speaker amp output clicks on. Then carefully switch back to the problem source -- if that's the problem, switch off again immediately and re-check all of the cable connections at both ends, the receiver and the source component, and make sure you don't have a feedback loop due to a recording device feeding back a signal. All VCRs and CD/DVD-recorders should be hooked up to the VCR, DVR or TAPE/CD-R "IN/OUT" jacks with IN being connected to the cables marked OUT on the deck and vice versa. (That confuses even us experienced guys sometimes!) Also, no MONITOR video or audio outputs should be connected to the recording decks, nor should the TV outputs be fed back to the recorders. The same goes for the digital IN/OUT jacks for CD recorders; use only the same number IN as OUT for each component (Optical IN/OUT #4 and #5 are the two digital IN/OUT pairs on the AVR-3803).

Jan 22, 2008 | Audio & Video Receivers

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