20 Most Recent Niles SI-1260 12-Channel Amplifier Questions & Answers

did you get an answer?thanks

Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Eure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

the sps one is a passive device, the protection circuit is and attempt to protect your amp from very low impedance when you have mulitple speakers attached. The Protection circuit switches in a 2.5 ohm resisitor in series.If you where to connect 4 sets of 4 ohm speakers to this unit and not push in the protection switch you amp would hate you and hopefull just trip the over protection in the amp. When you push in the protection switch you add 2.5 ohms to the circuit. So with four 4 ohm speakers your load would be 3.5 ohms. The device is rated for 100 watts of music power. The only thing inside the unit is switches and the two resistors mention above. So not much to go wrong with the unit. If you have shorts, and not open wires it is more than likely related to the user wiring on the back of the. First make sure that all of the wires are trim to size to fit in the small terminals and you do not have any flying leads when they are inserted. Also make sure that each speaker wire polaraity is correct. If it still does not work then you will have either a open resistor, that is apparent when it does not work and the button is pushed in. or a bad switch, Or you have way overload the unit and burn off a track on the pcb.

If the display is working, you have audio. Check your amplifier. 1300Watt adaptor ... This unit draws a very low power and that is not needed.

1. Power Off: Turn off the device.
2. Jumper Configuration: Locate the jumper labeled "S16" on the device. Initially, it should be connected to pins 2 and 3.
3. Power On (Alarm+All LEDs Flashing): Turn the device back on. You'll see the alarm LED and all other LEDs flashing.
4. Power Off Again: Turn off the device once more.
5. Jumper Adjustment: Change the jumper configuration from pins 2 and 3 to pins 1 and 2.
6. Finished: Your Porpo YH-2000 is now set to the desired angular unit mode.

If you encounter any issues, you can press the reset switch on the back of the device to reinitialize it.

this model SA rather than SC seems to be a Middle East model. The SC version doesn't have DAB. https://www.google.com/search?q=panasonic+sa-pm250+instruction+manual ..

All questions need clear 'make model (what it is)' first 3 words. https://www.google.com/search?q=fmdott085+V398 ..