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I have a Technics PR-305 Digital Piano. I was playing a couple of songs on it., then about 5 days later. around the beginning of November I went to turn it on it made a loud humming sound from the sp

I went to turn on The Technics PR-305 Digital Piano on I got a humming noise, I turned up the volume all the way up but got no sound even through the head phones. I learned that the speaker blew. and I don`t have any speaker surround on it, that may have caused it along with the amplifier, Can the amplifier be repaired so it can work again?

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  • 16 Answers

Yes it can.....but you will need the schematics and some test gear in order to do it.....and a soldering iron....what do you mean by no surround on the speaker?? Can you post a pic??

Posted on Nov 26, 2014

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: On power up there is a loud humming even with volume at 0

I would also be inclined to check all the larger electrolytic capacitors in the power circuits as well for AC bleed.

Posted on Feb 24, 2009

  • 656 Answers

SOURCE: LCD Display screen on a Technics PR-305.

Only by replacing the screen.

Posted on Apr 16, 2014

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moe_2782
  • 443 Answers

SOURCE: I have a Technics PR-305 Digital piano The back light is barely light when I turn on the piano Can that be replaced?

yes maybe you may fined that some of the power to the led is being blocked by causing a larger resistant to the led which will cause it not to light up as bright.

Posted on Jun 12, 2014

mrstanskaggs
  • 118 Answers

SOURCE: Can an inverter that powers the back light of an LCD display of a Technics PR-305 be repaired to make it light up brighter?

Yes. It is a fluorescent tube. It has to be from the OEM though.. It usually comes as a diver board and tube assy.

Posted on Jun 25, 2014

matthewpiilo
  • 150 Answers

SOURCE: I have a Technics PR-305 LCD Screen, The back light has dimmed So I can barely see it. What causes the back light to dim after awhile

could be a power saving feature check your manual

Posted on Jul 14, 2014

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I have a Technics PR-305 Digital Piano. I had a couple of guys come out to see if they could fix it. Only the LCD display and the front light worked. It must be the power supply.


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it can be repaired or replaced if the boards are still available
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I Have a Technics PR-305 Digital piano that I have for a little over 12 years ago that I enjoy playing on very much, I have a distortion problem in my speakers it`s not very bad I was told in Fixya th


The Speakers can be replaced with any brand. The thing you need to know is the OHM rating for the speaker. OHM is also called impedance. Unless the sticker has fallen off the back of the speaker that information will be on that sticker. OHM rating MUST match the old speaker. For instance 4 OHM, 8 OHM, 16 OHM are common ratings. All different ratings but VERY important to get this correct otherwise you could damage the electronics of your instrument.

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