Question about Roland Hp337 Digital Piano

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I have a key which had dropped and no longer works. Can I fix this? I'm fairly good with tools.

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This service manual will be close enough to your unit:

http://elektrotanya.com/roland_hp-335.pdf/download.html

Scroll down near bottom to where it says "Get Manual" and click on that.

They will let you only download two a day without being registered.

Posted on Mar 21, 2011

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Posted on Jan 02, 2017

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THere are a number of keys that are stiff or "stick" and do not play properly. IS ther a simple fix?


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My Roland Juno d has contact issues. I need to have the contacts cleaned once a year because I keep losing sound on some keys and some sound too softly. I am tired of shelling out $135 every year for a...


Answer:
Before i give you the right solution, i have to say that i have posted the answer to FIX the problem of all of the contact problems, people writing in how many of their keys are not working. And the post that they are showing is one that says to clean the contacts. That will not work.
Ok,
the answer.....
You can purchase a kit called Rubber contact kit here: http://www.mcmelectronics.com/product/20-3890&cid=prodCrossSell
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Key contact Kit:
http://www.oaktreeent.com/Roland_Keyboard_Parts_Units.htm

These kit are made to re-coat the contacts on the keys. It will bring your board back to brand new condition and last as long if not longer than the original coating.
Also can be used for any rubber contacts like remotes or game controllers. etc.
This will work and i did mine after numerous times of taking the keys off and cleaning them.
I hope this gets out to all of you that are having the same problem.
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DJ LIGHTS


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Laser types require fog to get the effect and there really isn't a way short of getting the weather to cooperate and give you fog to get those effects.

Between the laws of physics and the construction of lighting intended for interior use, what you are asking for is just not easily obtained.

The inability to control ambient lighting outside is a real problem. Many of the DJ things require a fairly darkened room. The sky glow from a city is enough to kill off the effects.

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2. Locate the disloged keys. Carefully press them back into position - they will "click" into place. Make sure the corresponding key on the keyboard isn't stuck in an "up" position - you may have to remove the metal key part and replace it again while making sure the key is correctly seated.
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How to remove keys for complete cleaning


I've worked on a lot of keyboards and they're all different.
Unless you have the service manual, a good set of electronic tools and have the time, don't attempt it, take it to a keyboard services specialist. If they know what they're doing, you'll get you keyboard back in good working condition.

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