Question about Technics SC-EH780 CD Shelf System

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Technics seperates my amp on my seperates which is the main power source will not come on or light up when you press the power button it just stops red like its on standby could anyone help

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Re: technics seperates

I'm not familiar with the exact system you have but the simplest cause to this problem woulf be a sticky switch, since power is reaching the system for the stand by light to come on.

It is possible to test switches like this by opening up the stereo and touching an unbent paperclip across the two metal contacts that go into the switch. If it comes on then you know your switch is bad, however be warned that running electrical equipment with the casing off puts you at risk of receiving a shock if you touch the wrong part so I don't officially recommend this.

If the switch is faulty then you can either try cleaning it by spraying a contact cleaner such as IPA into it or just replace the part (though this will require soldering).

Otherwise, some stereo systems have an internal fuse that will blow to protect the circuit if you overload it so have a look for fuses on the circuit board.

Posted on Nov 27, 2007

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NEED operators manual for ITRR-501 retro 5 in 1. lost mamual. NEED TO KNOW how to record to CD Disc. Also will it record fro records to disc and record cassett to disk. PLEASE SEND me a manual. OR a zerox...

The unit will record to CD from the turntable, cassette or the AUX port. Place a blank CD-R or CD-RW in the CD tray. (Note: CD-RW discs may not play on other CD players.) Press the Phono, Tape or Aux button to select your audio source for recording. (For Aux, you will need to connect the source device to the AUX port in the back of the ITRR-501.) Wait for the CD disc to load and check for any indicator lights (you should see the "NO TOC" and "CD" or "CD-RW" lights lit). Select your Track increment (or Auto Manual for unattended track formation).Press Record button and the up arrow to adjust the recording level.

If you are recording from an LP, put the tone arm down on the record. For all sources, press Play. Press Stop to end recording or Pause to temporarily break the recording. Press the Track Increment button to advance the track number if you are doing so.

To finalize your CD-R to make it readable on all players: after stopping the recording, press the Finalize button.

The manuals for Innovative Technology products are available here: . The products are listed in alphabetical order. The direct link to the ITRR-501 manual in English is .

I hope this helps.

Cindy Wells

Sep 19, 2011 | Innovative Technology ITRR501 Audio Shelf...

3 Answers

Stuck in standby

You can reset all to factory settings, which may help; unplug power, put back in switch on with power button. Then press together "tape", "CD" and the power button. You may need to reset the clock before it will work. If you need the manual, here is the link; check page 26 for the reset if not clear - nothing else in there that seems to be related, but you may find something i missed. Hope this helps :)

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I have a technics SA 400 reciever. All the lights work when turned on, but no sound is coming out.


If your technics SA 400 reciever turns on all the light but does not seem to produce any sound. Then you need to understand that there seem to be a problem with the unit.

The problem mainly if from the output of the receiver. Check to see if the cables are properly hooked up to the receiver. Then also check if the volume is not on the lowest. Then you try to test other cords on the device to know if the problem is not from the cords.

If it is confirmed that the problem is not from the cord, then it means the jack/port is faulty and need to be replaced.

Have the jack replaced or the ports on the receiver and it will work perfectly fine.

Hope this was helpful

Jul 18, 2011 | Technics Audio Shelf Systems

1 Answer

Every time burned one fusse and y think it is from power amplifier,because don t have schematic diagram so y need this but don t now from where y take...any way thank you.

Can't help with the schematic, but I can tell you that a fuse blows like that with an overload, from a semiconductor that acts like a piece of wire. If you have a multi-meter you can test transistors or diodes in the power supply or main amp section (on heatsink). It will be just like you touched the probes together, when you are on seperate terminals.
If the device uses an IC for the main amp, I personally would replace that anyway with your problem. As they are good at doing just that.

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Error f-61 on SA-AK640

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Booting up

Probably corrupt firmware. You can re-load the backup and restore the system.
Press and hold the SOURCE and STOP buttons whilst plugging into the mains supply.

Continue to hold until recovery option appears.

If this doesn't work, then the backup firmware is corrupt too.

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F61 tells you its a power source problem according to the manual. to all F61 error it is very likley that the str470-050a reg legs desolderd and have broken away from the main body of the regulator giving you the f61 and shut down.

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