Question about Technics SC-DV290 System

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Output Power of a Technics SA-DV250 sound system.

Hi

Can anyone tell me the output power(RMS) of the L + R speakers of a Technics SA-DV250 please.

Thanks


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  • intense_sl5 Feb 27, 2009

    Thanks alot mate

    Cheers


  • Branded101 Sep 18, 2009

    Hello.
    I have a fairly old Technics sa-dv250 system which is connected to my lg 5020 tv. I have connected all the cables from the tv with scarts to the digibox and cable tv box, all these work as expected. I have connected the sa-dv250 to the tv and the dvd/cd player works perfect with sound via both the tv speakers and the sa-dv250 speakers. The question is, how do I connect the sa-dv250 system so I can use the speakers so I can hear normal tv?
    Many thanks
    Paul


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  • 336 Answers

100 watts per channel both channels driven into 6ohm. You can download the owners manual at http://www2.panasonic.com/consumer-electronics/support/ (Technics and Panasonic are both made by the same company) Then enter your model #. the specs are on page 23 of the manual.

Posted on Feb 27, 2009

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Posted on Jan 02, 2017

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1 Answer

How do I connect and hear a technics SLB210 turntable to a DV250 sound system


The signal output from the turntable is very low and needs a special input which most modern sound systems no longer have.
You will need to connect your turntable to a preamplifier.
The output from this preamplifier then goes to the auxiliary input ("AUX") of your sound system.
A good starting page to look around for a turntable preamplifier is here:
http://www.amazon.com/gp/richpub/syltguides/fullview/21PCGJR9SBLQP
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Hi!

The F70 error certainly indicates a blown fuse inside.
The real problem is why the fuse is blown: there are only two possible reasons
1. there is a short circuit on the output (lines or speakers)
2. you have a blown output transistor (and that means some work and skills to replace).


To be sure, please change the fuse with a same rated fuse (buy more than one because it can blow again). Disconnect the speakers and turn the amp on. If the fuse blows again, it is sure something wrong with the output transistors. If the fuse remains ok, then please check all the wiring to the speakers.

Hope it helped.

Regards,

Bogdan

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1 Answer

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Do not continue further. There is a short circuit in the power supply or output amplifier stage. Disconnect power. The unit is preventing a fire or further damage to the system. Also, check the speaker output terminals for wires shorting the terminals together. Otherwise, an audio repair shop must isolate the problem. More than likely a transistor has shorted in the output stage.

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1 Answer

On switching my technics sa-dx750 it says switching off overload


The question is what is causing the overload? The power supply or the output devices on the heat sink?
If you have accidently shorted a speaker wire, then the answer will be output devices, otherwise it could be anything in the power section. You may find a burnt or damged device with either of the causes.

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OVERLOAD


First of all the KEF is a powered sub which means that it wants a line level signal NOT a speaker level. Send the signal from a tape output or pre-amp output to the sub input. The overload is because the impedence load for the speaker output is too low and looks like a short to the amp. Continued attempts to connect the system as described will result in damage to the output section of the amp.

Please let me know if you need more info.

Dan

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THIS UNIT HAS NO SUB WOOFER AMP IN IT. THE ONLY WAY TO OVER COME THIS IS TO HOOK THE LEFT AND RIGHT FRONT SPEAKERS STRAIGHT TO THE SUB WOOFER AND THEN GO FROM THE SUB WOOFER BACK TO THE INPUTS ON THE BACK OF THE UNIT FOR THE FRONT SPEAKERS. THE SUB WOOFER THIS WAY WILL EXTRACT THE BASS AND THE FRONT WILL RECEIVE THEIR PART. THIS SOUNDS CRAZY AS HELL I KNOW BUT THAT'S HOW I GOT MINE TO WORK. THE OUTPUT FOR THE SUBWOOFER IS USELESS AND PUT THERE FOR YOU TO HOOK UP AN AMP FOR A SUB WOOFER. EVERYTHING HAS SHORT COMINGS, AND THAT'S THE ONE FOR THE AX-720.

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Most of these problems are rooted in a failed power amp module.
I'm working on an older technics unit but with the same troubles.

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