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Toshiba SD-6109c goes into protection mode as soon as I switch it on. I need a repair manual but cannot find one anywhere. Does anyone know the solution or where I can find a service manual. Please do not send me to a user manual that is not what I need. This problem occured after I blew out both tweeters in my speakers. Something happened inside the reciever when this happened and is switching the reciever off as soon as I power it on.

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  • Logan Whitcomb
    Logan Whitcomb Nov 26, 2013

    I know it is an internal problem and most likely something in the amp board has failed. I just need the service manual to trace back to the specific components for the FR and FL channels. These are the channels that the speakers were run through when it failed. Toshiba seems to have hidden any service manual though. It is not even on that paid sites or the link that Andy Turner sent me.

    Thanks for the help.

  • mikadot
    mikadot Nov 26, 2013

    It's easy to spot the transistors that do the work They are the items bolted to the large aluminum heat sinks read the numbers off of them and order new ones

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  • 2,113 Answers

Unplug all speakers rewire the speakers making sure not to cross anything check all wires for shorts (cat bites etc) Make sure that only 8 ohms (one speaker ) is on each wire or the ohms that are specified on the amp. In electronics 2 eight ohm speakers in parallel becomes 4 ohms total and will put the amp into protection mode. watch for stranded wire pieces crossing to the other wire. If it still has problems it may need to have the amplifier transistors/ics replaced. While the cabinet is open look for electrolytic capacitors that are bulged or split and replace them.

Posted on Nov 26, 2013

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Posted on Jan 02, 2017

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SOURCE: Toshiba SD V393SU2: No

In that case the problem is hardware - a part inside the unit has failed. To find out which part you must open the unit and start testing: check the integrity of the power cable; check that the power source gets the power, check that the rectifier on the power source works, check that the outputs of the power sources are active and what voltage is on that and finally check that the power source generates the stand-by voltage and can be activated manually.
For all of this you need a voltmeter and at least a basic experience in electronics - to know where to look and how to interpret the results. If you don't have the latter then its time to take it to someone who has it.

Posted on Nov 17, 2010

  • 910 Answers

SOURCE: No power. Know its in

One can be purchsed from the link below if this is of any use to you.

http://service-manuals-schematics.com/purchase.php?id=Magnavox+DV225MG9+Service+Manual+%2F+Schematics

Posted on Jul 01, 2011

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