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#425441 - 05/06/17 11:24 PM EP500 Dying, any Advice?
jmone Offline
devotee

Registered: 01/08/06
Posts: 306
Loc: Sydney Australia
My original EP500 (must be 10years old) all of a sudden just whispers. It powers up - has a green light and while it works it you barley hear anything, even at 100%. Even my AVR's Audio Calibration Mic can not hear it.

Has anyone come across this before and any advice before I pop the Plate Amp off the back to see if there is something obvious (I've tried swapping cables, level, inputs, outputs, settings etc)?

Thanks
Nathan
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HT:M80,VP150,QS8,EP500 Outside:4xM3 Office:AudioBytes, Rumpus: M60,VP150,M22 Portable:2 x Airs

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#425443 - 05/07/17 02:29 AM Re: EP500 Dying, any Advice? [Re: jmone]
jmone Offline
devotee

Registered: 01/08/06
Posts: 306
Loc: Sydney Australia
FYI - I pulled the amp out. Looks pristine and I did not see any obvious bulged caps, burnt bits etc. Wobbled some wires and put it all back together. No changes.
_________________________
HT:M80,VP150,QS8,EP500 Outside:4xM3 Office:AudioBytes, Rumpus: M60,VP150,M22 Portable:2 x Airs

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#425448 - 05/07/17 10:09 AM Re: EP500 Dying, any Advice? [Re: jmone]
real80sman Offline
connoisseur

Registered: 05/16/02
Posts: 1176
Loc: Ontario, Canada
I had the same thing happen a few years back with the same vintage EP600. Sent Axiom a picture of the amp, and unfortunately they weren't able to repair it. (Design change, and no readily available parts) They offered me a discounted price on the current replacement amp. Give them a call.
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Shawn

Epic 80/600 + M3's + M3 Algonquins + M2 Computer + EP125
I think I'm developing an addiction.

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#425455 - 05/07/17 04:15 PM Re: EP500 Dying, any Advice? [Re: jmone]
brwsaw Offline
connoisseur

Registered: 10/12/12
Posts: 1782
Loc: Canada
Is there a fuse?
Anyone?


Edited by brwsaw (05/07/17 04:15 PM)
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Sitting pretty.M80's still providing.4 paradigm subs, 12,10's & an 8.Still changing shit around.Lol.

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#425459 - 05/07/17 06:07 PM Re: EP500 Dying, any Advice? [Re: jmone]
jmone Offline
devotee

Registered: 01/08/06
Posts: 306
Loc: Sydney Australia
All the dials works (vol, cross overs, curve), but is almost like the woofer is just being driven by pre-amp rather than a power amp.

I'm handy enough to replace parts but not handy enough to work out what bit needs replacing. I'm betting it is some 10c part.
_________________________
HT:M80,VP150,QS8,EP500 Outside:4xM3 Office:AudioBytes, Rumpus: M60,VP150,M22 Portable:2 x Airs

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#425474 - 05/08/17 12:10 PM Re: EP500 Dying, any Advice? [Re: jmone]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13571
Loc: Iowa
My EP600 from 10 or so years ago started acting up, the volume would be very low and as I increased the gain knob all of a sudden it would jump to like 110dB. In the end as Shawn mentioned the parts for the old amps are no longer available, but Axiom, could quote you on a newer amp if you call them.

The only thing you could try is unplug it from the wall outlet and let set for a couple of minutes and then try it again, that has saved me on some strange poltergeist activites.
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M80s-VP180-4xM22ow-4xM3ic-EP600-2xEP350
Anthem AVM60 Outlaw 7700 Emotiva A500 Epson 5040UB



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#425477 - 05/08/17 01:34 PM Re: EP500 Dying, any Advice? [Re: SirQuack]
bridgman Offline
axiomite

Registered: 08/25/04
Posts: 6070
Loc: Bowmanville, Ontario, Canada
Originally Posted By SirQuack
My EP600 from 10 or so years ago started acting up, the volume would be very low and as I increased the gain knob all of a sudden it would jump to like 110dB.

It's probably obvious, but that sounds a lot like a dirty potentiometer.

Did anyone with similar issues try giving the gain knob a hefty shot of contact cleaner (or whatever it was that we used to spray into noisy controls) ?

I'm sure the answer is "duh, of course" but have to ask smile


Edited by bridgman (05/08/17 01:36 PM)
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M60ti/VP180/QS8/M2ti, SVS PC-Plus 20-39, EP500
M5HP, Sierra-1, M40ti
M3v4, VP100

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#425484 - 05/08/17 09:44 PM Re: EP500 Dying, any Advice? [Re: bridgman]
real80sman Offline
connoisseur

Registered: 05/16/02
Posts: 1176
Loc: Ontario, Canada
Originally Posted By bridgman

It's probably obvious, but that sounds a lot like a dirty potentiometer.

Did anyone with similar issues try giving the gain knob a hefty shot of contact cleaner (or whatever it was that we used to spray into noisy controls) ?

I'm sure the answer is "duh, of course" but have to ask smile


Never thought of that John. I still have the old amp packed away. The plan was to eventually take it to a local repair guy and have him look at it. I will have to give your suggestion a try. Thanks!
_________________________
Shawn

Epic 80/600 + M3's + M3 Algonquins + M2 Computer + EP125
I think I'm developing an addiction.

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#425489 - 05/09/17 04:52 PM Re: EP500 Dying, any Advice? [Re: jmone]
bridgman Offline
axiomite

Registered: 08/25/04
Posts: 6070
Loc: Bowmanville, Ontario, Canada
Hey, look what I found smile

Link

I wonder what "static" sounds like through a 100 Hz low pass filter. Probably sounds like silence.


Edited by bridgman (05/09/17 04:53 PM)
_________________________
M60ti/VP180/QS8/M2ti, SVS PC-Plus 20-39, EP500
M5HP, Sierra-1, M40ti
M3v4, VP100

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