Question about Onkyo TX-DS494 Receiver

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Receiver turns off as soon as turned on.

I have not used the receiver in a long time. I want to use the preamplifier to connect my turntable to my PC audio line in to transfer LP's to CD-R. I don't have speakers hooked up. Will the lack of speaker load cause the receiver to turn itself off for protection?

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  • fccool59 Sep 11, 2008

    i have a tx ds494, i just bought it of ebay and it powers for 0.5 seconds then goes into standby, it was sold as working.



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SOURCE: Analog RCA input to HDMI output?

You have said the correct thing HDMI is digital therefore Analog will not pass.
You might have RCA audio outputs on your cable box so either send them into the TV from cable or into the AMP then use AMP volume to listen to TV audio (select unused input and remember it is for TV) the key is to remember that cable box will drive the initial vol so raise or lower cable vol then use AMP vol to obtain desired volume.

Posted on Dec 03, 2007

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SOURCE: hdmi audio problem from tivo hd

Your tv is new? if it is then it has a remote link, Panasonic call it Viera link, Sony call it Bravia link. Check your tv if it has that, if it does turn it off.
problem should be solved.

Posted on Dec 13, 2007

  • 5 Answers

SOURCE: Settings

As mentioned, I have got to the bottom of this without Onkyo's help. I replaced the offending component, which is a 5.5V 0.1F backup capacitor. This is mounted on the front PCB, just below the right hand side of the display. It is a right pain to get to. Here briefly is what to do:
1: Unplug (really important!), remove top cover.
2: Undo three screws underneath front panel edge, pull off volume and tone knobs, and gently pull off metal front panel from the bottom, which is held with sticky tape inside.
3: Undo five screws from plastic front panel and free it. You will now have limited access to the front panel PCB and audio processor PCB.
4: Cut a few black cable ties as required to gain better access to front PCBs, and unplug ribbon cable from right hand side. It may be helpful to undo the nut and so release the volume control encoder.
5: Still struggling with poor access, release the standoffs from the audio processor PCB and unplug its ribbon cable. You have to remove the audio processor PCB in order to get to the screws under it. You may want to remove the PCB for holding the mains switch.
6: Now with some kind of access to the whole of the front panel PCB, undo 10,000 screws which secure it to the black plastic front panel.
7: Now with limited access to the front side of the front panel PCB, locate the capacitor, towards the right hand side of the display, just beneath it. Note the polarity; the negative terminal goes to the left/top pcb land, positive to the bottom/right. Desolder and replace this component. HINT: Make life easier for next time and mount the new part on the REAR of the PCB, so now negative will be down. Care with polarity!
8: Reassemble carefully. Make sure that the volume control encoder metal clasps are tight as they come apart easily. Fit new cable ties in original locations (important to prevent hum pickup).

The parts you will require then are about 6 nylon cable ties, and a 0.1F 5.5V capacitor. I had to make do with a 0.047F part because it was all I had to hand and I didn't want the machine in bits while I ordered one. Many of these components today are radial PCB mounting, which are not an ideal fit but could be used at a push. If you can get a vertically mounted one, that would be better. The nearest I can readily find is from RS Components item 377-350 (Panasonic EECS0HD104V), and the leads on this could doubtless be re-jigged to fit.


Posted on Mar 09, 2008

  • 16 Answers

SOURCE: how to connect 6.1 speakers to 7.1 receiver

Using the Onkyo display setup, you can turn off one surround speaker, and your receiver should realize it's using the 6.1 channels instead of the 7.1

If you don't want to go that route, use the mic setup that came in the box and your Onkyo will determine by itself the 6.1 channel layout.

It should work fine.

Posted on Nov 15, 2008

  • 24 Answers

SOURCE: bose 901 iwht tx-sr 706

You will need to connect the speakers to the front channels as you would with any normal set(Speaker + to amp +, speaker - to amp -, etc) then you connect the special Bose equalizer through a tape monitor loop and always have the monitor loop engaged.

Posted on Dec 29, 2008

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Turntable troubleshooting

My guess would be Old Receiver, Amp ... have a phono input what is in a simple way a pre-amplified input , newer receiver don't . You just need to buy a small Phono Turntable Preamplifier ( less then $20 on line) you are going to install between the receiver and the turntable and you should get some sound at the right level.
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Your Onkyo has no suitable input for turntable. I suggest you to use this or this preapmlifie, connect the turntable at the preamplifier input andthe preamplifier output at any available input at the Onkyo (cd, tapein or video in, at the red and white connectors). Of course you can buy any phono preamplifier from any shop and connect it with the same procedure. The models before is just a sugestion.

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Only if the turntable is preamplified or you get a phono preamplifier for it or run all of it through a receiver that supports the turntable.

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I have connected my Akai AP A510 turntable to my Technics SA EH770 but i don't get any sound till i turn it up on full, can you help

"PHONO" is the only designated connection on a receiver that is literal and exclusive. Nothing but PHONO will work right on it and old-school turntables would require it to preamplify the tiny current produced by a Phono cartridge.

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The ground for the turntable connection is not working. I've got a bad hum with the ground wire attached to the screw on the receiver and a worse hum when I disconnect it. I had the turntable checked...

The ground connection on your receiver is simply connected to the metal chassis, so there's nothing that can go wrong with it. You won't have hum problems with any sources other than the turntable because their output levels are higher.

With nothing connected to the turntable input, do you still hear any hum? You shouldn't. If you do, the problem is not because of the ground connection, but because something in the receiver's phono preamplifier circuit is faulty. But if there's no hum, the turntable is responsible. The fault may be in the turntable's output cable. The shield connection may have broken loose from the terminal where it's connected in the turntable. Or your cartridge may be defective.

If your receiver is the culprit, you can see about having it serviced. Or you can purchase an external turntable preamp. Radio Shack sells one, and here's another source. With an external preamp, you can connect your turntable to one of the higher-level inputs (AUX, CD) and avoid the phono input.

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If the turntable is old-school (not self-preamplified) just connect it to PHONO.

If the TT is self-preamplified use any available Line Level input, like AUX.

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Assuming you have a functioning turntable either self-pre-amplified or through a component (such as a receiver or integrated amp) with an internal Phono preamplifier just connect the self-preamplified TT directly to the analog inputs on the CD Recorder; or connect the CD Recorder to the receiver / integrated amp as if it is an analog tape deck (which it functionally is in this case).

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The signal produced by a phono cartridge is much smaller than a standard Line Level component produces. That is why the clas of equipment called PREamplifiers existed. Besides PREamplifying it to a level the rest of the circuitry can use it also modifies the frequency curve according to the RIAA standard to produce a sonically flat output. Without either process applied you will have weak, tinny sound from a turntable.

The Pioneer VSX-D711, like most modern AV receivers, is not equipped with a Phono Preamp. If the connector doesn't SAY Phono is won't do Phono.

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Connecting NAD 2600a amp.

Never connect incompatible connections. Speaker outputs are for speaker inputs. Period.

The various inputs on this or most any amp are for Line Level signal with the exception of anything explicitly labeled "PHONO" as that would be for a non-preamplified turntable ONLY.

From what I have found online, Lab-In was a NAD feature that restored the frequencies that were rolled off when turntables were being used in the (assumed) preamplifier that fed this amp.

"NAD belleived at the time that practical PHONO stages and the preamp and power amplifier stages be rolled off at subsonic frequencies to prevent subsonic wow and flutter from Turntables and supersonic frequencies (EMI/RF/Radio) signals from getting into the system in the first place. Their notion was that if your ears cannot physically hear it, then why amplify it. For the PURIST, there were a set of LAB IN amplifier inputs with more extended response called "LAB IN" inputs"

Use the Lab In's UNLESS you have a turntable source.

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