Question about Home Theater Systems

Open Question

Power transformer burnt out

Can somebody tell me what the secondary voltages are on the main power transformer so i can possibly get a replacement.thank you hutty. I have a blown power transformer in my Denon AVR-1801 receiver. Denon wants almost as much as I paid new for the unit for the transformer. Does anyone have a more cost effective source?

Posted by on

2 Suggested Answers

  • 1 Answer

SOURCE: Simple question?? how do I connect my Panasonic subwoofer to my denon receiver?

I have a very similar problem with the same exact Panasonic sub. I went to Best Buy and Radio Shack looking for an adapter, and they basically told me that one does not exisit. Apparently, Panasonic designed the home theater system specifcally so that it could not work if any part of the entire system was ever seperated.

Posted on Nov 15, 2009

  • 405 Answers

SOURCE: need maual download for denon avr-689 multi zone


Posted on Nov 21, 2009

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


1 Points

Related Questions:

1 Answer

I have been told that the heavy transformer is burnt out but there are no replacement parts for it is that correct

That would be the main power supply transformer. Your informant probably means no exact brand name match is available from the maker. It should however be possible to use a generic transformer of the right specification eg

It becomes a bit more difficult if the transformer is soldered in to be part of a pwer supply circuit card, in which case your informant may mean that the matching circuit card is unavailable.

I would try 2 or 3 repairers to see if you can find one who is a bit more resourceful.

Apr 27, 2016 | Home Theater Systems

1 Answer


You cannot unless you have a switchable unit and most are not. You will need to use a transformer on the power cable to hook a 110v unit into 240 volt mains power.

Feb 02, 2016 | Home Theater Systems

1 Answer

Could yopu please tell me why my sony dav-dz260 will not turn on all fuses are working fine could it be the off on button thank you

It is possible that the power supply has failed and so a quick check on the power side will confirm the case. Check for blown fuse, and also the voltage on the secondary side.
It is also possible that the amplifier has shut down due to a PROTECT circuit. If so disconnect the speakers and test. Also try and reset the amplifier, remove power for a while and then switch on to see if the reset works.
Finally check to find if there is shorting in the output stages, if so the protect will cut off supply .Do not attempt to remove unless you are equipped as the boards are stacked and will need good soldering techniques.

Oct 11, 2011 | Sony DAV-DZ260 Theater System

1 Answer


In most cases the standby light might blink with different rapidity to indicate a fault relevant to the processor. It is possible that most of these indicate that there are errors in the processing section. Since there is a possible short or leak in the circuit the output driver section can take in huge current to trip the SMPS or from advice from the micro processor. Remove the power plugs and make sure that high voltage sections are discharged of the potential stored in capacitors. Look for visible signs of leak or of busted capacitors. Look for bulged capacitors or damaged components- burnt or busted. Use a multi-meter to check the continuity or shorting in components, if so detach from circuit and test. If the voltage builds up and the set power ON and then shuts up then the suspected section must be checked in detail.

The processor must have the +5 voltage to the function properly, the +B and secondary voltages also must be checked to infer the fault. Trace with caution and in running through the signal path , circuit trail.

Oct 07, 2011 | JVC DD-3 System

1 Answer

My ht303su wont turn on, its just not getting any power. i have tried multiple power sources and still nothing. not even a stand by light

Possible that the power system is damaged or that the safety fuse is blown. It is important that the set be opened to check this out to confirm. If so replace with the same rating.
Otherwise the power supply unit is faulty , check the transformer and the secondary stages.

Jun 22, 2011 | LG HT303SU Theater System

1 Answer

Hi .. I recently got a bose 321 home entertainment system. Unknowingly i plugged it to a 230 V main .The display in the DVD player came for a moment and then went off..I came to know that i need a 230V to...

Right now the Transformer in the BOSE system might have burnt out or it might be shorted out. It would be better to check with BOSE, but for burnt transformers you cannot claim warranty from BOSE.
If bose refuses to provide the warranty then take it to a TV repairing shop and ask them to change the Transformer so that it would support direct 230v....

Apr 19, 2011 | Bose (321GS) System

2 Answers

My SC-HT650 system reads F61. I think I need a new transformer. Where do I find that?

Not the transformer. probably needs a voltage ic or output ic. F61 is a voltage error code. if it was the power tranformer it would not power up at all. It also could be just a bad fan. The fan should start as soon as you turn it on.

Jan 26, 2011 | Panasonic SC-HT650 System

1 Answer

Tips how 2 wind transformer ac -dc .output 12volts. in put 240

your windings of primary to secondary must be in a ratio of 20:1. That is, for a primary with say, 100 windings and input 240 VAC, 5 secondary windings will give you 12 VAC. you need to rectify then regulate if you want 12VDC. Just buy an off the shelf wall-wart.

Jul 13, 2009 | Bose Lifestyle 18 System

1 Answer

RCA Model STAV-3870 Receiver

Very likely that the internal thermal fuse opened on the main power transformer. With the power cord unplugged, Check the resistance on the ac input of the transformer should read less than 10 ohms. Contact me when you know. I might be able to find one.

Jan 19, 2009 | RCA Home Theater Systems

3 Answers

Hcd bc150 main power

Please check Input Voltage 110 ~ 240 volts AC at rear or bottm side of unit. If same is written there, its Auto Voltage Operatable and can be use on 220Volts.

Aug 31, 2008 | Sony DAV-BC150 System

Not finding what you are looking for?
Home Theater Systems Logo

Related Topics:

243 people viewed this question

Ask a Question

Usually answered in minutes!

Top Home Theater Systems Experts

Gyula Lacz

Level 3 Expert

482 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers


Level 3 Expert

6993 Answers

Are you a Home Theater System Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides