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I have a Technics PR-305 Digital Piano It was working at the End of October, but around the beginning of November 5 my Technics PR-305 Digital Piano made a loud humming sound, then it quieted down, I

I turned on the Technics PR-305 Digital piano I tried to put in headphones in order to here that even if the speaker was gone but it didn`t work I put a Casio CT-700 on top of the Technics PR-305 Digital Piano The notes from the Casio CT-700 only sustained and that`s about it.

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  • john fritz Nov 26, 2014

    Hi John , I want to help you with your question, but I need more information from you. Can you please add details in the comment box?

    1. Do you see an error message code on your unit?
    2. Have you checked the trouble shooting section of your owner's manual?

    I may be able to help you narrow down the problem. IT COULD BE CORRECTED BY YOU in some cases, but do NOT open the back panel as this may void your warranty and is NOT ever allowed.

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Also, in addition to more info I need; look on p 91 of the online owner's manual linked below. Pay attention to Sounds and Effects, the first section therein. Follow the directions closely, esp., read pp. 26, 83, and 86 which are referenced for detailed help w/ sound issues. TECHNICS SX PR305 Manual Page 91

Posted on Nov 26, 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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I have a Technics PR-305 Digital Piano in which I play on. I took apart the Digital piano to get to the rubber contact to clean them. later on I went to turn on the piano and it didn`t work.


Attempted to clean? Not a good idea obviously...Take it apart like you did before and look at the wiring and imagine that you can divine the thing to reveal some logical explanation. If you used a contact cleaner or spray to clean, that could be death to that piano my friend.

Dec 12, 2015 | Music

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I have I Technics PR-305 Digital Piano. I took it apart to try to clean the rubber contacts with rubbing alcohol. It improve some what, then later on I turned on my Technics R-305 Digital Piano.


I would suggest taking it into the nearest factory authorized repair center. Go to the Technics web site to find one in your area.

Dec 10, 2015 | Music

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I Have a Technics PR-305 Digital Piano that I have and really like. I went to play on it on October 12th. Certain notes with different chords weren`t sounding.


it can be repaired or replaced if the boards are still available
Take it to an authorized service to have it repaired and failing that some shops that repair micro wave ovens have the technical ability to repair items of this nature
may be a good radio technician or radio repair shop could also do the repair as it is basically an electronic ( wireless/radio) that is controlled by keys

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1 Answer

Hi I have a Technics PR-305 Digital Piano, that I had since the fall of 2001. I went to play on it on it today Some of the notes in the chords weren`t sounding.


Sometimes the contacts under the keys get dirty and must be cleaned. To do this you have to disassemble the keyboard,
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Also clean the contacts on PCB.

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1 Answer

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


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??

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1 Answer

I have a Technics PR-305 Digital Piano That has a Distortion in My Speakers it`s not really bad, Would I have to get new speakers, if so where would I get them at? or could they be repaired?


It sounds like the rubber around the speakers has perished. Open the cabinet to check. If so, measure the size and order replacements easily on internet. It's a simple job for someone with a little knowhow

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