Technics SA-560 Repair and Demonstration

Please read this whole description. No less than four attempts at uploading later, here's the Technics SA-560 stereo receiver. It was also marketed as the SA-956 (different color, same thing).

This model appeared in 1985, only about a year after stereo television broadcasting was formally introduced.

There are a few things that make this unit unique. Although it is limited to the VHF band, the first is a built in audio only TV tuner that can play back monophonic, MTS stereo or secondary audio program (SAP) broadcasts. Analog TV is obsolete, but an RF modulator with stereo output can still allow you to use the TV tuner, as demonstrated in this video.

Although there is a "CATV" band on the tuner, it is limited to tuning channels 2, 3 and 4. I'm not sure how it is really intended to be used. It seems that using it with an outboard cable box would restrict you to monophonic sound as most devices featuring an RF modulator do not put out stereo audio in the RF signal. (There are few exceptions to this.)

Television audio appears to be run through a dbx noise reduction process as indicated on the front panel.

A special vacuum fluorescent front panel display alternatively indicates power output or activation of the stereo "expander" function. It's really not necessarily but at least it looks "cool". And you wouldn't see anything like it on a modern receiver!

With its VCR input (shared with one of the tape monitor inputs) and special audio equalization option, this could be seen as an early "home theater" receiver.

The last item worthy of somewhat special mention is the audio power amplifier. This unit uses one of the few fairly high power hybrid stereo amplifier packages to ever be produced. It outputs 70 watts per channel RMS into an 8 ohm load. Although labeled as a "New Class A" Technics SVI-3004 (have to verify that number), this module appears to be a rebadged Sanyo STK-xxxxII unit.

Category:

Science & Technology

Tags:

• Technics
• SA-560
• stereo
• receiver
• TV
• CATV
• tuner
• audio
• MTS
• fix
• repair
• demonstrate
• home
• theater

[james42519]

that seems like it does the same thing as the satellite speakers on my aiwa radio. actually like the aiwa cx-naj80 aka nsx-aj80 as the manual says i found online says. 250 watts and a lot of bass. there are 2 connectores for each speaker.

[uxwbill]

@james42519 It's probably not a whole lot different, only in this case there are only two speakers used.

[deezol]

I own a Technics SA-351 and it blew out where it won't turn on. Is there a way to fix it? I love this receiver. <3

[uxwbill]

@deezol One the single most common problems with these receivers is the power switch. It's been known to go bad after many years of use.

[GamingPros77]

Hi, I have this receiver and also need some bulbs replaced...anyone had a service manual with the part numbers for the bulbs...anything at all would be a help...thanks...Bill B Newfoundland/Canada

[uxwbill]

@GamingPros77 The bulbs for this receiver are "194" automotive bulbs. Getting them to take solder is a little difficult and you don't want to heat them for too long. Scrape the terminals to remove the plating after carefully folding them down and you'll have it.

[andruha11234]

Cool, I'm first!

///gets ready for thumbs downs :D

[lghaze42]

Technics invented new class A and computer drive.sanyo had nothing to do with it.In fact some of their higher end amps had class a class AA amplifier.

[james42519]

my 94 toyota camry radio a16404 has a light that messed up. should try and fix it some time. sure this radio is a basic one with tape but i sounds better then the sony explode and vr3400sdu radios i tried. toyota put 6 ohm speakers and radio in there car and the speakers just don't sound right with them since the radios are 4 or 8 ohm. i don't want to change the speakers since there is nothing wrong with them.

[MrTechnicscollector]

@uxwbill Thanks for getting back to me...yea I know the bulb..have them in my car.

sounds like a headache to change..thanks again

[ussmbus]

MTS Stereo

[uxwbill]

@ouimetnick At a Meijer store.