Yahoo Groups archive

Emax

Index last updated: 2026-04-28 23:23 UTC

Message

Re: [emax] Re: high whine in power supply - Thanks!

2009-02-27 by nung242

Thanks for all the help, you guys are life savers ( the lives of Emax samplers! )

So it looks like I need a new PSU. Jammie, do you have info on the replacement
PSU or a link to the company? 

Thanks again for your time.
Jason V


--- On Thu, 2/26/09, jammie.emma <jammie.emma@...> wrote:
From: jammie.emma <jammie.emma@...>
Subject: [emax] Re: high whine in power supply
To: emax@yahoogroups.com
Date: Thursday, February 26, 2009, 10:22 PM











    
            --- In emax@yahoogroups. com, sm papke <mothrecords@ ...> wrote:

>

> THE HIGH WINE IS COMING FROM THE HI VOLTAGE AC CONVERTER WHEN THE

LCD BACK LIGHT GETS WEEK THE back light is like a capacitor they get

week over time this produces a tone of about 10khz to 20khz very

annoying just replace the back light the german company e-foil make

various el strips for different lcds the one for the emax 1 and 2 



they cost 16 euros



you can add a high frequency noise suppressor cap between the positive

and earth on the el connections as a back up 



to replace all the caps is going to cost about £20



some of the transistors and ic chips on the psu are no longer made 



and cost the earth very expensive to get hold of some and minimum

order is 10



i found a brand new replacement switching psu it senses the voltage

and works to that voltage



its regulated supplies and they come with 3 year manufacturers

warranty they sit in exactly the same place as old psu and cost £55 



> It sounds like a possible buggy power transformer. . have you had any

problems ie: jumbled screen letters, jittery lights, or any red led's

stuck "on" from time to time? I would definitely try a re-cap on the

PSU first and go from there. I believe there was also someone here in

the group that knows where to get new replacement PSU's that will work

w/ EMAX1 and EMAXII.

> cheers, emulator_island

> 

> --- On Tue, 2/24/09, nung242 <nung242@... > wrote:

> 

> > From: nung242 <nung242@... >

> > Subject: Re: [emax] high whine in power supply

> > To: emax@yahoogroups. com

> > Date: Tuesday, February 24, 2009, 8:35 PM

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> >             Its coming directly from the PSU. 

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> > Jason V

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> > --- On Tue, 2/24/09, sm papke <mothrecords@

> > yahoo.com> wrote:

> > 

> > From: sm papke <mothrecords@

> > yahoo.com>

> > 

> > Subject: Re: [emax] high whine in power supply

> > 

> > To: emax@yahoogroups.

> > com

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> > Date: Tuesday, February 24, 2009, 4:19 PM

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> > the whining sounds is audible directly from the PSU, or

> > only when the units outputs are in use? I would definitely

> > re-cap the PSU if it is still stock.

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> > cheers, emulator_island

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> > 

> > --- On Tue, 2/24/09, nung242 <nung242@yahoo. com>

> > wrote:

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> > > From: nung242 <nung242@yahoo. com>

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> > > Subject: Re: [emax] high whine in power supply

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> > > To: emax@yahoogroups. com

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> > > Date: Tuesday, February 24, 2009, 12:31 PM

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> > >             It has the kit inside for the HD, but I

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> > > not have one hooked up yet. The only thing I have done

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> > > take and old internal 3.5 floppy drive and replace the

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> > > that was originaly there, but it was whining before I

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> > > that.

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> > > Thanks!

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> > > Jason V

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> > > --- On Tue, 2/24/09, sm papke <mothrecords@

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> > > yahoo.com> wrote:

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> > > From: sm papke <mothrecords@

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> > > yahoo.com>

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> > > Subject: Re: [emax] high whine in power supply

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> > > To: emax@yahoogroups.

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> > > Date: Tuesday, February 24, 2009, 10:23 AM

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> > > hi, is there an HD installed on your EMAX II?

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> > > --- On Tue, 2/24/09, nung242 <nung242@yahoo.

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> > > > From: nung242 <nung242@yahoo. com>

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> > > > Subject: [emax] high whine in power supply

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> > > > To: emax@yahoogroups. com

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> > > > Date: Tuesday, February 24, 2009, 10:18 AM

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> > > >             Hello, 

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> > > >  When I turn on my emax II keyboard - the power

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> > > supply

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> > > > whines loudly for about 5 minutes before

> > quieting

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> > > down. Does

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> > > > this mean the power supply is on the way out? If

> > so,

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> > > where

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> > > > would I get a new one? Would it be cheaper to

> > have the

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> > > power

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> > > > supply repaired?

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> > > > Thanks for any help or suggestions!

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[Non-text portions of this message have been removed]

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.