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Yamaha dsp a2070

Yamaha dsp-a2070 only works on tape 2. Every other input does give a really soft sound. Once the input is on tape 2 I can change source with the input selector without loosing sound.

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  • Rob verburg
    Rob verburg Mar 31, 2014

    I think some work was already done on this amp as one of the screws is not an original.

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  • Audio Player... Master
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Is the 'tape monitor' function turned on?

Posted on Apr 02, 2014

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Posted on Jan 02, 2017

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SOURCE: yamaha dsp a1000 left channel cuts out sometimes in surround mode, sterio works fine

The easiest way is to buy the new part online and replace it - cost about $50US.

However, if you're up to it, this problem is fixable without the need to buy any parts. The selector switch has four sets of spring contacts which need to be bent slightly to increase the pressure on the pads against which they press, but it's a tedious job and not for the faint-hearted.

Here's what you need to do:

Open the case (6 screws) and also free up the front panel (9 screws).

You'll see that the switch consists of a PCB, an aluminium box and a motor. Remove the two screws holding it to the front bulkhead. take oyr the small "L" shaped circuit board that overlays it. A plastic pop-in holds the bottom of the switch PCB and the switch assembly can then be removed entirely.

Next you will need to remove the aluminium switch box from the PCB. Firstly de-solder all the connections which hold it in place. Now pull it clear.

Here is the MOST critical part of the job: inside the switch box you'll see four circular plastic wafers - these contain the contacts you need to fix and you'll need to bend the tangs which hold the shaft assembly onto the housing and then the tags which are holding the wafers in place. Your difficulty will be making sure that the wafers go back on the shaft with the rightr alignment and that the wafers go back in the same order.

Take some digital pictures while the wafers are still on the shaft with the orientation of the KNOB included - if you mess this up (I did) the job becomes horrible! Also, mark each wafer with a number 1-4 because there are three different kinds Once you are comfortable that you can replace the wafers in the proper rotary configration with respect to the shaft, remove them individually and pop out the gray plastic cores and bend the spring contacts upwards so that they will go back pressing more firmly against the pads. Now reassemble, and good luck!

Posted on Dec 29, 2008

  • 236 Answers

SOURCE: Yamaha DSP A-1000 input selector switch not working properly

flying yeti.... yup... it's definitely your input switch. im from yamaha service before at saudi arabia. that is a normal trouble specially in high humidity places. you can only get a replacement at yamaha service though. their newer model are better they dont use contact switches nomore.

Posted on Mar 18, 2008

jango2
  • 38 Answers

SOURCE: Yamaha DSP A-1000 input selector switch not working properly

i did not post that....and why would fixya be asking the poster of a problem for a solution?????
Bug? Pls delete these posts moderator.
ty

Posted on Mar 10, 2008

  • 1 Answer

SOURCE: Yamaha DSP-A2070 intermittently fail to output audio to speakers

Probably selector switch when you turn to CD mode. The ball bearings inside the switch make poor connection resulting in intermitant problems to either speaker. Yamaha knows the selector switch is defective but has stayed silent. I've had mine replaced for $144.00 Can and it works AOK now. Different switch of course. I've had my problems with that switch for a long time and it was after a few years that a knowledgeable technician knew of the problem. Poor support by Yamaha! I'll never buy a Yamaha product again nor will my relatives and friends. Do the calculations and assess whether the cost of the switch is worth the value of the receiver. I think it is worth it as the receiver when it works is excellent. It is at a stage now when other problems could creep in though including corrosion on the boards and solder joints so have the technicians do a entire quality check at the same time...

Posted on Jul 02, 2009

  • 1 Answer

SOURCE: hi. my YAMAHA DSP-A1000, works

The INPUT SELECTOR is defective. Order part number VT148000; it costs $51.04. As of 14 Jan 2011, the part is on backorder until the later part of Feb 2011.

Register online to order the part yourself, or you can place your order by phone at the Yamaha Parts Department at (714) 522-9011 or (888) 892-6242, Monday - Friday, 7:30 am - 5:00 pm PDT.

https://www.yamaha24x7.com/yamahaoms/QuickOrder.aspx

I hope this post also clarifies the problem from the posts above.

IMPORTANT: After installing the new Input Selector switch, place the knob at 1230 position (between LD and DAT/Tape 1) BEFORE turning the unit ON. The Yamaha Tech said this procedure ensures the input source is properly programmed and aligned.

Lakay

Posted on Jan 15, 2011

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start reading on page 14 of your service manual.

let me know if you need further assistance!

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1 Answer

Hi. my YAMAHA DSP-A1000, works well only the input selector does not to select. its all static noise and does not seem to lock onto an mode. i have to use the tape 2 monitor to hear music.


The INPUT SELECTOR is defective. Order part number VT148000; it costs $51.04. As of 14 Jan 2011, the part is on backorder until the later part of Feb 2011.

Register online to order the part yourself, or you can place your order by phone at the Yamaha Parts Department at (714) 522-9011 or (888) 892-6242, Monday - Friday, 7:30 am - 5:00 pm PDT.

https://www.yamaha24x7.com/yamahaoms/QuickOrder.aspx

I hope this post also clarifies the problem from the posts above.

IMPORTANT: After installing the new Input Selector switch, place the knob at 1230 position (between LD and DAT/Tape 1) BEFORE turning the unit ON. The Yamaha Tech said this procedure ensures the input source is properly programmed and aligned.

Lakay

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My yamaha DSP AX1 amp does not work when audio is connected via optical or coaxial any suggestions how to correct this. no sound comes from any speaker except the subwoofer.


Are all the speakers turned off (set to None) in the speaker menu.(except the sub)?

2 channel direct analog stereo may still work, but any surround modes will use the speaker settings and the full DSP digital section.

Check also the input mode isn't incorrect - although if the sub is wired correctly and gives sound this can't be whats wrong.

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Hi...
Is the source selector a round rotary switch knob?
If it is the insides of that switch will need a good flush with contact cleaner.

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