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#2366716 - 12/29/14 05:38 AM My Roland F-130R giving electric shock! Ouch.
nigelchen Online   content
Junior Member

Registered: 12/25/14
Posts: 10
Hi my roland f130-r is giving out electric shock. when i touch the metal parts e.g. hinge. when i plug in audio cable, the other end of the cable also giving out electreic shock. this will affect sound quality when recording. =/
How can i solve this? or is this normal?

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#2366723 - 12/29/14 06:18 AM Re: My Roland F-130R giving electric shock! Ouch. [Re: nigelchen]
TheodorN Offline
1000 Post Club Member

Registered: 07/16/10
Posts: 1362
Loc: Sweden
Just play Electric Barbarella by Duran Duran, or Electric Dreams. cool Joking aside, I would ditch the thing, and get a new one, it seems it's not a safe thing to have around the house, let alone play. I would not take the chance of having a device around me, that's leaking electricity.
_________________________
My YouTube channel:

http://www.youtube.com/user/thenorbass1

Casio PX-5S

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#2366779 - 12/29/14 11:01 AM Re: My Roland F-130R giving electric shock! Ouch. [Re: TheodorN]
Charles Cohen Online   content
2000 Post Club Member

Registered: 12/26/12
Posts: 2027
Loc: Richmond, BC, Canada
Quote:
. . . Joking aside, I would ditch the thing, and get a new one, it seems it's not a safe thing to have around the house, let alone play. I would not take the chance of having a device around me, that's leaking electricity.


+1.

It's dangerous. Return it to the seller, for exchange.

. Charles


Edited by Charles Cohen (12/29/14 11:03 AM)
_________________________
. Charles
---------------------------
PX-350 / microKorg XL+ / Pianoteq / Lounge Lizard / ZXA1 speaker

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#2367299 - 12/30/14 04:49 PM Re: My Roland F-130R giving electric shock! Ouch. [Re: nigelchen]
Jay Roland Offline
500 Post Club Member

Registered: 12/08/13
Posts: 530
Loc: Edmonton Alberta
Most likely this is some type of static discharge, or something introduced by the device that the cables are plugged into. There is no connection between the isolated power supply and the metal parts on the Cabinet.

Nevertheless, please contact the retailer you purchased from and pursue this further with them.

Jay
_________________________
Alberta/BC North Factory Sales Rep for Roland Canada.
www.roland.ca

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#2367858 - 01/01/15 12:24 AM Re: My Roland F-130R giving electric shock! Ouch. [Re: Jay Roland]
nigelchen Online   content
Junior Member

Registered: 12/25/14
Posts: 10
hey i have check the power supply. even though it is 3 pin plug at the plug. But at the power brick it is only 2 prong. Hence there is no earth wire to ground my piano. With this, it will cause static discharge. Is'it possible for me to switch out the powersupply?


Edited by nigelchen (01/01/15 12:26 AM)

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#2367947 - 01/01/15 09:41 AM Re: My Roland F-130R giving electric shock! Ouch. [Re: nigelchen]
Beemer Offline
Full Member

Registered: 05/26/13
Posts: 411
Loc: Scotland
This product is not designed to have nor must it be connected to an earth connection.

I am an electrical engineer so when I read you saying that you were receiving electrical shocks I am thinking that it must be static electricity shocks. Otherwise with a true electrical shock from either 120V or 240V you would certainly not touch the product with power on again. Theggse voltages with above a current of 30 milliamperes hand to foot can kill.

Static electricity is caused by walking in socks across nylon carpets or fidgeting around on a synthetic cloth seat material. The static voltage may be as high as 25,000 Volts and is discharged when you touch a device plastic that is not carbon filled.

Static electricity is not dangerous to you (unless you have a heart pacemaker). Computers and electronic musical instruments must be self protecting as long as the discharge is to the outside of the casing.

Ian


Edited by Beemer (01/01/15 09:45 AM)
_________________________
I'm all keyed up

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#2367958 - 01/01/15 10:05 AM Re: My Roland F-130R giving electric shock! Ouch. [Re: nigelchen]
Tuneless Offline
Full Member

Registered: 06/17/13
Posts: 279
Loc: AZ, USA
Do you get a shock from anything else in the room that is metal and grounded? Maybe try plugging in a power tool with a metal casing and three prongs (a pretty ancient item). If you have something of this sort in the room, you could discharge yourself before touching the piano. I'll leave it to Beemer to comment on this idea, as my background is physics, not engineering, and the difference is that physicists tend to be great at theory and engineers are more practical.
_________________________
Cynthia

Roland FP-50
Conover Upright, 1888/9, but a very low mileage piano. http://www.pbase.com/schnitz/conover_upright_piano__1888_or_9 .
Tuneless = Don't play piano(yet) and couldn't tune a guitar, much less a piano.
I'm technically very capable. I love my piano and love tinkering with it.

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#2368194 - 01/01/15 06:14 PM Re: My Roland F-130R giving electric shock! Ouch. [Re: Tuneless]
Beemer Offline
Full Member

Registered: 05/26/13
Posts: 411
Loc: Scotland
Engineers and technicians working with devices susceptible to static electricity wear a carbon impregnated wrist band with a wire connected to ground that has a resistor in the circuit.

Such a device ensures that the human body does not conduct static electricity anywhere except to ground.

In practice and without a wrist band it is sufficient to touch a bare metal grounded object such as a central heating pipe to discharge the body.

In the 1980s it was quite common for ladies wearing nylon undies to experience shocks whilst typing. IBM then started to add carbon to the plastic of computer cases and their golf-ball typewriters.

Ian (I used to sell power supplies to IBM)
_________________________
I'm all keyed up

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#2446414 - 25 minutes 53 seconds ago Re: My Roland F-130R giving electric shock! Ouch. [Re: Jay Roland]
nigelchen Online   content
Junior Member

Registered: 12/25/14
Posts: 10
Hi i just use a test pen to check the metal contact such as the screw. It shows a positive result of electric current flowing through it. So is this a defect?

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