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Roland MP600 keyboard This was out in my garage for a couple of years. It used to work, but the sound would cut in and out. I replaced the cord, which was taped in a few places. It has power, but no sound at all. Any trouble shooting suggestions?

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3 Suggested Answers

Ironfist109
  • 3018 Answers

SOURCE: I have a Roland keyboard

  • Hi, I can help. You just have a cold soldier joint on the DC power input.Get the top/bottom off by removing a few screws and expose the connector. Just take a little soldier and touch up the solder points on the connector on the board. That's it. Will be good as new.
  • I recommend doing this before that jack gets pulled a bit to hard and tears off the circuit board which then may require more than a couple soldier joint touch ups.

  • If you have any comments please feel free to leave them here.
  • Hope this helps and thank you for using FixYa.

Regards, Tony

Posted on Aug 26, 2011

  • 978 Answers

SOURCE: Onkyo TX-DS838 integra receiver got sound cutting off for few sec

Hello sir, there are several factors that might cause this:

  1. Low voltage. check for filter leaking capactor. defective regulator, or a burnt resistor.
  2. High voltage peak, check for the voltage output VCC.
  3. the main amplifier is defective. if it is an IC amp. replace it. if transistorized check for the pushpull driver/transistor.
Hope this helps. let me know your progress. thanks

Posted on Jul 28, 2009

  • 11 Answers

SOURCE: Pioneer stereo receiver has sound and power problems.

i would suggest checking the wires on the speaker switch board, thats usually the main cause of this problem..but i dont recommend buying pioneers newer stuff

Posted on May 16, 2010

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1 Answer

I have a Roland keyboard with a DC jack. I can wiggle the jack and the power cuts on and off. How do I fix this?


  • Hi, I can help. You just have a cold soldier joint on the DC power input.Get the top/bottom off by removing a few screws and expose the connector. Just take a little soldier and touch up the solder points on the connector on the board. That's it. Will be good as new.
  • I recommend doing this before that jack gets pulled a bit to hard and tears off the circuit board which then may require more than a couple soldier joint touch ups.

  • If you have any comments please feel free to leave them here.
  • Hope this helps and thank you for using FixYa.

Regards, Tony

Aug 26, 2011 | Audio & Video Receivers

1 Answer

My keyboard does not have sound coming from speakers. When I plug in the headphones, sound comes through them. It is plugged in, so batteries are not the issue. This is a recent problem; it has worked...


it sound as if the built in amplifier for your keyboard has failed, since your headphone output works you know the preamp is working. The easiest solution is to send the left and right (or just the left if you want mono) to an external amp, and just live with it like that. A replacement amp for the internal one will be difficut to find and not easy to replace.

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If you want an exact replacement you will need to contact www.roland.com If you want to replace the speaker yourself you can contact www.martinsoundproducts.com (out of Cleveland Ohio USA). they stock many speakers in all sizes and prices, but they are a wholesale company so the prices are very low. I suggest you replace the woofer in both of your monitors though so your sound will be balanced. besides if one speaker has malfuntioned chances are the other will soon anyway.

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Have been given an old Roland E38 intelligent keyboard with no power supply. Where do I buy an aco/acj adaptor


Hi,
You can buy the power supply in your local Electronics Supply. List the ampere rating and working voltage of the keyboard. This is usually located at the bottom part of the unit. You can try to look also the availability on ebay.com.
Hope it may help you.
Have a nice day!

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I'm looking for a laptop with an optical port to go from my Roland workstation keyboard direct to my computer to download the music from workstation.


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Pioneer stereo receiver has sound and power problems.


i would suggest checking the wires on the speaker switch board, thats usually the main cause of this problem..but i dont recommend buying pioneers newer stuff

May 04, 2009 | Pioneer Audio & Video Receivers

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I have a Roland HP2e digital piano and one of the keys has lost its touch sensitivity. It works initially but when it passes a certain threshold of loudness when played it goes to full volume on that key...


Just managed to fix key loudness problem on my sister's HP-2E after talking to the local Roland Service Center. Basically I had to remove all the rubbery strips under the keyboard, clean them and clean all the contacts on the keyboard PCBs with CO contact cleaner. Not a trivial procedure - 80 or so screws to remove and replace and a lot of parts.
It has completely solved the problem (apparently its not unusual on any keyboards). I have posted more details and a couple of pictures on my blog (http://web.me.com/iain_sommerville/Home/IainBlog/Entries/2009/4/20_Piano_Repair_2nd_Attempt.html not sure if that is a permalink - if it doesn't work go to http://sommerville.info and search for HP-2e).
A roland service center can fix this as well however it is pretty time consuming so they will charge you. They can also sell you replacement keyboard contact strips if cleaning them doesn't work. Hope this helps

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JVC RX-884VBK RECEIVER


The JVC RX-884VBK is a great machine, I had it for over 5 years and had no problem at all. I came across the (NO SOUND at all) and I believe it is an easy fix. Check the Front left, there are 2 keys marked 1 and 2 for SPEAKERS output, sometimes you don't notice that you connected the speakers to 1 and the 2 key is pressed. You could have both keys pressed and you will get the sound. I hope that helps.

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Sound cutting in and out


Same problem here....took it to authorized onkyo repair and cost was $700+ for new board. Got the 707 from crutchfield instead.

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