Help with diagnosing Rane PE17? - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

Old 04-14-13, 07:34 PM
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Join Date: Apr 2006
Location: Katy, Texas
Posts: 8,809
Re: Help with diagnosing Rane PE17?

Quote:
chargedmr2 wrote: View Post
I measured the voltage output across the XLR out pins of the EQ. Pins 1 and 2 read 15.98 volts. Pins 1 and 3 read the same, 15.98 volts. Pins 2 and 3 read 0 volts. This is with NO signal being sent from the AVR but with the AVR powered on.
XLR pins 2 and 3 are signal (+) and (-), so that’s where you measure the voltage (which is A/C). The fact that you didn’t get anything before across Pins 2 and 3 tells me something’s wrong. That plus the fact that you shouldn’t get any kind of voltage reading with no signal passing through, much less something as high as 16 volts.

Regards,
Wayne

Wayne A. Pflughaupt is offline

Old 04-15-13, 03:46 AM
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Wayne Myers

Join Date: Jun 2012
Location: Lincoln, NE
Posts: 4,609
Re: Help with diagnosing Rane PE17?

Quote:
chargedmr2 wrote: View Post
Excellent. Thanks for the link. Sorry to be difficult, but I don't quite understand what exactly you mean in your post above regarding the voltage checks. I'm an amateur here, so if you don't mind dumbing it down a bit more I might be able to get it

So, which pins should I touch the volt meters two pointy probes to??
Here you go:

Looking at the Connector Diagram for the 6-pin RJ11 power supply connector, the way the connector is facing you in the diagram where you can see all 6 pins, the pins are numbered

Code:
```
___
|   |
|-----------|
|           |
.|.|.|.|.|.|.
1 2 3 4 5 6
```
With your meter in AC volts mode, ranging up to 20 VAC, look for the following voltage measurements:
pins 1-2: 9 VAC
pins 1-3: 9 VAC
pins 1-4: 9 VAC
pins 1-5: 9 VAC
pins 1-6: 0 VAC

pins 2-3: 18 VAC
pins 3-4: 0 VAC
pins 4-5: 18 VAC

pins 2-5: 0 VAC

Remember to look closely at the pins on the cable connector and on the chassis connector to make sure none are bent or out of place.
AudiocRaver is offline
Old 04-15-13, 06:23 PM Thread Starter
Shackster

Join Date: Mar 2012
Location: Huntsville, TX
Posts: 19
Re: Help with diagnosing Rane PE17?

Thanks for walking me through this. I measured 11v where you noted it should be 9v and I measured 22v where you noted it should be 18v. I also measured 0v in the places you mentioned it should be 0v. I'm guessing this means the supply is probably working as it should? Oh, yes...I did check for bent pins on the power connector, but all is well there (including the connector on the chassis).

Edit to add: I'm using a newer digital multimeter and I mistakenly took my measurements of the XLR out with the unit in DC voltage. I remeasured ensuring it was set to AC and found that across all combinations of the 3 XLR pins, there was 0 voltage (with no signal being sent). When I connect to the amp and send a signal through, my sub does nothing, so I assume there is still 0 volts passing through (though I didn't actually measure this). I guess the strange thing is that the amps signal light remains lit from the moment that the EQ is connected to it and powered up. Weird.

Last edited by chargedmr2; 04-15-13 at 06:59 PM.
chargedmr2 is offline
Old 04-15-13, 10:02 PM
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Wayne Myers

Join Date: Jun 2012
Location: Lincoln, NE
Posts: 4,609
Re: Help with diagnosing Rane PE17?

Sounds like the power supply is fine and something is awry in the Rane itself. Too bad, was hoping for a \$30 fix there.

Your measurements on the XLR output connector were all useful. There should be no DC output voltage ever (a couple of millivolts max) and no AC voltage without signal running. All points to a problem inside the Rane so far. Bummer.

The 15 VDC on two pins of the XLR sounds like something wrong in the power supply circuitry inside. Sometimes there are internal power supply fuses - that would be an easy fix. Or maybe something in the rectifier/filter/regulator circuit. Maybe time for a repair tech.

How much \$\$ do you have into it?
AudiocRaver is offline
Old 04-15-13, 10:39 PM Thread Starter
Shackster

Join Date: Mar 2012
Location: Huntsville, TX
Posts: 19
Re: Help with diagnosing Rane PE17?

Well, that is too bad then. I picked it up for \$135, so not sure I want to dump more into it. I've contacted the seller to see what can be done on that end. It was sold as a working unit in perfect condition.
chargedmr2 is offline
Old 07-08-13, 08:45 PM
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Matt

Join Date: Jun 2013
Location: Oregon
Posts: 281
Re: Help with diagnosing Rane PE17?

Quote:
Wayne A. Pflughaupt wrote: View Post

That’s an effective but tedious process. I assume you’re trying to equalize from a graph generated by a sine wave sweep? Just use REW’s RTA feature and do your equalization in real time. Easy-peasy.

Regards,
Wayne
Could you explain this a bit more? I started a thread at the top of this forum if you'd like to reply there.
pdxrealtor is offline

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