Sa1270 amplifier Have had this stereo since the early 80's.  My problem is that the amplifier has stopped working.  The votltage selector seems to have something wrong with it.  Is there a wire to bridge across behind the dial selector.  The voltage selector does not stay in by itself,looks like something has broken off it that may have held in something.

HI try this video it worked for me. :)
http://www.youtube.com/watch?v=0Xfm-9jCmjE

This unit is just a 5 disc CD player and cannot drive large speakers all by itself. Normally it is hooked up to a stereo receiver / amplifier which is what provides the power to drive the speakers which are wired to the back of the stereo amplifier.

If you have a home stereo, then just run the cables from the 2 AUDIO OUT connectors on the back of your CD player to the CD IN connectors on the back of your stereo.

Then turn your stereo on and select CD on your stereo input mode selector and you should be able to play the cds on your RCA and hear them through the stereo speakers.

If you do not have a stereo amplifier with speakers to connect it to, then you can always listen to it through headphones connected to the headphone jack.

Or if you have a set of self powered amplified speakers, like the kind you hook up to a computer, then you can run the AUDIO OUT cable from your cd player into those as well.

Good luck.

The red light on amplifier relates to power supply while the green light is indication of sound functionality. An amplifier that allows sound to generate should display both red and green lights. Howeever, some amplifiers would display only green as long as the sound is functioning.

Solving the problem

First, a red light still on means the power connections to the amplifier is fucntional least requirng repairs.

Second, the green ligh should turn on once the stereo were tuned up to produce sound. If the stereo is still on only least produce sound on the amplifier, check on the connection wires between stereo to amplifier that may have disconnected due to woofing or dubbing sound generals with unfirm wiring.

Third,

Hi,

U cant get an amplified out put form ur av receiver for zone 2. speaker a A and B is the same out put of frond left and right. it is not ZONE 2 output. U can get only a pre output for zone to from this receiver. U nee a separate stereo amplifier for using zone 2 .put an amplifier in the other room, connect the zone 2 pre out to it. And do the following setup in ur av receiver .

The receiver shows check speaker cable because its amplifier minimum impedance is 8 ohms . when u connect other speaker in speaker the total impedance will come under 4 ohms. Speaker b is not ZONE 2 in this amplifier

1. press the input selector button A or B to select the source component you want to setup.

2. press and hold LEARN (on remote) button about 3 seconds by using a boll pen or similar object ( SETUP and the selected component name appear alternately in the display window.)

3. press up or down arrow to select "zone2"

4. press LEARN to complete the Zone 2 setup.

5. press source select up arrow to display Zone2 in the window.

6. press an input selector button to select input source u want to listen to in the second room

7. u can control the component by using the component control area button

ok

did you mean that the output was replaced or the whole amplifier?
The pop sound along with the sound loss can be attributed to a failure of a component , most possible is a capacitor when the aluminium top bursts. So open the amplifierr to look for pieces of the component that burst out and you can piece up them to confirm.
The powerr to the section can also be faulty or open due to this so the voltage must be checked to be in order.
The possible area can be the power supply circuit or the output of the amplifier.
Test from the power supply section down to see the power into the preamp and power amplifier output section. make sure that the input selectors are also working in the command of the main controller.
Checck only with some knowledge of these circuits otherwise take help.

According to this listing I found on eBay it will work for you.

PYRAMID Stereo Control Pre-Amplifiers
PR2500

* Power On/Off Switch w/LED Indicator * Microphone Input Jack * Microphone Level Control * Bass/Midrange/Treble/Loudness/Balance Control * Master Volume Control * High/Low Frequency Filter * Stereo/Mono Switch * Muting Switch * Input Source Selector * Tuner/CD/Aux/Phono Input RCA Jacks * Tape Monitor Switch * 110/220 Voltage Switchable * Rack Mount Design * Dimensions: 19''W x 2.375''H x 8.5''DAs far as grounding the TT, if you must, just use any screw on the preamp chassis.

Hi cfipp
You could fix this problem with a quick squirt of CRC 2-26 into the function selector switch connected to the knob you are wriggling. This will sort out the problem. If you need further advice, feel free to ask me. I will help you. 
regards robotek

I suspect you have an auxiliary factory amplifier. Contact this company at the link for installation information.

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If you're certain there is no sound going out of the TT...

Setting the Pre-amp Switch
For increased flexibility of use, this turntable has an internal
stereo phono pre-amplifier. The Pre-amp Selector Switch
is located under the turntable platter, in the rear-center
(Fig. 1). If the system amplifier you are using has a PHONO
input, set the Pre-amp Selector Switch to the “OFF”
position. If your amplifier does not have a PHONO input,
set the Pre-amp Selector Switch to the “ON” position and
connect the turntable’s output cables to the AUX or other
high-level input on the amplifier (described later).

Turntable operates, but no sound at all
1. The stylus guard is still in place.
2. The tone arm Lift button is pressed in.
3. Amplifier controls set incorrectly: wrong input selected,
tape monitor on, speakers switched off, etc.
4. Check the stylus on phono cartridge for correct placement.
Refer to the instructions for replacing the stylus
on page 5.
Turntable operates, but no sound, or sound not loud
enough
1. If the turntable is connected to an AUX (high-level)
input: The Pre-amp Selector Switch may be set to the
“OFF” position (phono-input level).
2. The input gain of the amplified speaker or similar
device may be too low.
3. The stylus assembly may not be fully seated in the
cartridge body.

You could also isolate the problem to either the TT or the PC by trying the TT on some other sound device like a receiver. Make sure the PreAmp Selector switch is ON and plug the TT into any AUX, CD or TAPE input.

your wall speakers may not be connected.... disconnect each speaker from the selector box and test with a small AAA battery to see if they are connected by putting the battery between each speaker's wires , you will hear it crackle ,then gradually connect each wall speaker onto the speaker connector box . If the first set does not work i suggest there may be a problem with your speaker selector box . Good luck