Yamaha DSP-A1000 5-Channel Amplifier - Answered Questions & Fixed issues

I would also guess you have a flashing indicator, correct? If you do, your amplifier has DC Offset(a damaged amplifier). If this is the case, the protection circuit will not allow audio on any channel. If you are interested in having your Yamaha repaired, please look at my website, audioserviceclinic.com. You may contact me there. Thank you.

encompassparts website

As that unit is well over 5+ years old, I seriously doubt the part is available any longer. I doubt that you will even find a used part, and even if you do, it will probably be as bad as your switch. As I have worked on audio for over40 years, I would use LPS 2. It is a lubricant. Do not try this with WD40 or similar. Just spray the LPS on the wafers, or through any open holes in the switch. You just need a little. If you just squeeze the button, you will see just a little bit of foam. That is all you need. No more; no less. Rotate the switch from from left to right and back again multiple times. Try that. BTW, no manufacture uses these mechanical switches any more.The controls are now called Rotary Encoders, which basically are inputs to a display microprocessor IC(a computer within the new product) which in turn controls the inputs of a switching IC. It's the same as your old switch, just electronic, and much more complicated. If you need more information, or would like to inquire about repairing your unit, please visit my website at audioserviceclinic.com. You may contact me there. Thank you.

Depends on what you want to do. Check the manual.

first check it is getting power. does it light up? is there power to the switched AC outlet in back?

Check if the sound comes from a digital source like an optical cable or the one that generally the color is orange (not the common red and white, nor the yellow terminals) then check also if this ocurr with certain music. Let me know

Open it up and spray with Servisol

https://www.samswebsite.com/en/photofact/details/index/id/228080

My amplifier turns off after 5 seconds, what should I do to fix this problem

How old? is touch or mechanic switch?The switching circuit needs to be repaired or the power distribuition line. 5 or 12volts.

Your power suply is defective and needs repair.Or the power amp is shorted will blow inside fuse power linedistribution.

Generally speaking, an amp attempts to protect 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. Ensure 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 'nekkid'. 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.

Check for loose speaker connections at the speaker as another possible root cause for intermittent shutdown.

By opening a new incident you are losing all that good thread (*) we were already working on and you will probably have to re-explain everything to whoever chimes in going forward.

* http://www.fixya.com/support/t9198666-own_yamaha_dsp_a1000

The manual is apparently non-existent online so I only have this pitcure to use for reference... http://www.canuckaudiomart.com/view_images.php?cat=Amplifiers&catnick=amplifiers&cfid=113149&image_id=837646

The jumpers must be in place for tthe internal amplifiers to use those channels. Removing them allows you to feed external amplifiers to drive those channels. Lacking the original jumpers just place some short RCA cords in.

Look on the back: "Subwoofer Low Pass" for a powered subwoofer or amp driving a subwoofer. Your subwoofer's manual would suggest how to conenct it.

If you run through the setup and certify it knows about the center channel first, then test it with tiones, then maybe swap the center speaker with another one you might come to an answer.

well i refurbish one of does
its a bit dificutl but not imposible
u got to take it of form reciver unwell the conection and there are 3 safety twisted to hold the axe
streit that and ull get the axe easy out
there are 4 black pastic pin holders with a wite lil disk on it split the metal case and it should get out easy ( do not force or it will break) caution:( make a mark with a marker on all disk so u will know again the right position)
the lil wite disks r fixed with some claw u can carefull take of
u will find inside the contacts and clean tham with some cleaning solution and put it back all

DONE

esya way is to use a contacts solution without to open the selector spray it well rotate several times and if it work ur lucky (solution is not for long time)

your fuse is bad change fuse.

Is it getting hot?

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

Overloads can be from excessive periods of high output 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. Ensure 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 hands-on tech.

Check for loose speaker connections as a root cause for intermittent shutdown.

The manual is available to download on the Yahama site (usa.yamaha.com). Click on the "support" tab.