Question about Onkyo TX-SV373 Receiver

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It will not power up. Fuses are good and transformer is good

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You may have a problem withe the power supply circuit. It is the first circuit that is found internally after the power chord if you would trace it from the power chord to the inside. IT may be a damaged capacitor or the entire circuit may have gone bad. Check for swollen capacitors or leaking ones or traces of burn. Damages may also not be visible.

Posted on Jul 16, 2010

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I accidentally plugged a speaker output into bridge and right output at the same time. All fuses are good. Did I smoke the transformer? If so where can I get one?


Probably not. The fuses would have blown if the transformer had been overloaded.

These amps do not have output transformers. The transformer you see inside are likely switching transformers to increase the supply voltage substantially. They are pretty rugged. There likely fuses on the circuit board that you don't recognize. If there are surface mount components on the board, look for white rectangular that are square when looking from the end. Usually they will have xxA marked on them, a 1 or 2 digit number followed by an A. There are other shaped fuses, but they should all have a similar marking. Usually, the left and right amplifiers will each have TWO fuses associated with thir power supply and sometimes an additional one for the speaker.

Feb 01, 2015 | Car Audio & Video

1 Answer

I have a speed queen sc35md2yu40001washer that keeps blowing the 2amp fuse as soon as I switch on the breaker it is the fuse where the incoming power goes through before it goes to the transformer


Good job tracing the location of the fuses. Now, logically, the transformer is the next thing to check. When power is turned off at the house breaker, remove one of the wires on the output side of the transformer and see what happens when you turn the power back on. If the fuse blows, the transformer is shot and needs to be replaced. If not, go to the next device on the circuit, etc...

Jan 16, 2013 | Washing Machines

1 Answer

Power supply is not come to my audio system


You can check if there is power coming off the larger transformer or not when you power it up using a voltmeter. If there is no power in the on state check the fuses for burn marks to see if any are blown. If that is all good check to make sure the transformer internal heat fuse is in tact. You can do this by removing the transformer and then checking both side low voltage/high voltage sides for resistance. If it act like an open switch or bad connection you can attempt a repair on the transformer or replace it altogether.

Jan 27, 2011 | Audio Players & Recorders

1 Answer

It does not warm food


Hello :

Maybe it's the power transformer or power PCB or it could be just a fuse . Fuses are cheap and easy to be replaced . If it's the transformer or the PCB , then I recommend calling for repair .

good luck .

please rate !

Mar 28, 2010 | Goldstar MV-1526 Microwave Oven

2 Answers

Element FLX-2611B won't turn on. The red light is not lit


Just because fuses are intact does not mean it is not damaged. Sometimes a small spike of power does not blow a fuse but damages Transformer windings Before the fuse! If there are no lights picture or sound think powersupply transformer primary.

Aug 14, 2009 | Element Electronics FLX-2610 26 in. LCD...

1 Answer

My sx 950 wont turn on the lights wont work could it be a fuse?


Yes, check the incoming fuses over by the main power transformer first.
If the fuses are good, the next check will be power switch and then transformer itself.

Jul 25, 2009 | Pioneer Audio Players & Recorders

1 Answer

I have a cambridge audio A300 V2.0 amplifier that wont power up. i've checked for power at the switch and there is power and i've checked on the main board at the fuses but there is no power there, the...


Hi there get a multimeter place across mains input on transformer,FIRSTLY DISCONNECT AMP FROM MAINS,set your meter to contiuity ,if good you should get a low ohms reading (resistance),then check the secondaries (output of transformer) either 3 wires or four going into amp board..if readings acroos all wires are low ohms then transformer is good if one is open ,transformer has had it ...hope this helps

Dec 08, 2008 | Audio Players & Recorders

1 Answer

They wont turn on


Check the fuses. If the fuses are good, then it's the transformer that is shot. The fuses are located underneath the turntable platter. If your unit does not have any fuses, then the only problem could be with your transformer. You can PURCHASE A REPLACEMENT TRANSFORMER HERE.

Good Luck!

- Davis.
DIGITAL ANALOG THERAPY

Jun 05, 2008 | Technics SL-1210 Turntable

1 Answer

Unit wont turn on


.Hi jepenny

The board you are looking at is the standby cct and power switching PCB. It sounds like that is working, so you have probably lost power to the transformer primary or the transformer is open circuit. Check for blown fuses and replace with exact same type and rating.

Be sure to unplug at the wall before touching any internals!!

If you can find no blown fuses, the power transformer may have failed. Good luck, get back to me here is you need any more advice. Thanks for using "FixYa"

regards
Graeme

Feb 17, 2008 | Harman Kardon AVR 25 MKII

1 Answer

NO POWER


There are no more fuses that will make this work.Turn off power and disconnection the primary side of the power transformer (the big one) check with a ohm meter,it should read all most a short,if it reads nothing you have a defective power transformer. The transformer will be bad if you get no standby light at all,that is if all fuses are good.

Nov 30, 2007 | Denon AVR-1907 Receiver

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