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EP175 no green light
#429245 04/04/18 10:00 PM
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I have an EP175 subwoofer, about 12 years old. I found recently it was not working and saw that the LED stays red when the sub is turned on. What are the possible causes? It is driven by a Denon AVR S730. Any suggestions appreciated.

Re: EP175 no green light
JayLynch #429247 04/05/18 02:26 AM
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One thing that wouldn't hurt to try is unplugging it and leaving it that way overnight, just in case something internally got into a wierd state. Probably won't help but you never know - it fixes my washing machine every time it gets into a snit smile


M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8
Re: EP175 no green light
JayLynch #429250 04/05/18 01:26 PM
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Good idea, but no go. However I found the input coax port is a little loose. I'm going to remove the back panel & check it out. Hopefully I won't make it worse.

Re: EP175 no green light
JayLynch #429266 04/09/18 03:19 PM
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Still looking for possible causes. Sub does not leave standby mode, I presume. I removed the rear panel and just looked for anything out of place or burnt and nothing to see. Can someone point me to a manual on subs? I thought Axiom had user manuals online but can't find them at their website.

Re: EP175 no green light
JayLynch #429267 04/09/18 04:18 PM
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I found the owners brochure; no clue regarding troubleshooting. Posted to the AVS forum which has some additional info and corrections. This is an EP350 v2. not the EP175.

revised post:

about 1 -2 minutes after turning on sub, it switches from on (green light) to standby (red light). If I remove the input RCA cable, it switches back to "on" for 1 -2 minutes and will output a test tone and then switch back to standby. I noticed that the RCA input port is _slightly_ "wobbly" - not really loose but it will rock back and forth slightly if pushed. In comparison, the output port is solid. I removed the back panel and looked at the port from inside and could not see anything out of the ordinary, eg loose wires, burned component...

Does anyone have any ideas?

This is an Axiom EP350 v2 sub purchased about 12 years ago.

Thanks for any tips.

Re: EP175 no green light
JayLynch #429268 04/09/18 04:30 PM
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More info - when the sub is on, the receiver recognizes it when I run a speaker tone check. When it is in standby, the receiver does not see the sub. Regarding the on/off switch, it's either off on auto. There is no "on" position.

Re: EP175 no green light
JayLynch #429269 04/10/18 04:33 AM
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It appears a loose input port is causing the problem.

Re: EP175 no green light
JayLynch #429271 04/10/18 03:11 PM
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connoisseur
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Using the second connector. They are not really "input" or "output", but interchangeable for daisy chaining.


E = MC2 = ((2M80 + VP180 + 4QS8)/(EP800 + EP500))^(ADA1500 x D2v)
AxiomAir/6xM2/4xM22/2xVP150/2xM3
Re: EP175 no green light
EFalardeau #429272 04/10/18 05:28 PM
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Originally Posted By EFalardeau
Using the second connector. They are not really "input" or "output", but interchangeable for daisy chaining.

Agreed - I have a V3 EP350 and a V2 EP350, just use the second/other input jack.


Regards,

Mike
Re: EP175 no green light
JayLynch #429276 04/10/18 09:36 PM
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I tried it and got the same result. Wondering if practical to do an amplifier repair.

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