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Old 5th April 2006, 03:36 AM   #1001
jleaman is offline jleaman  Belgium
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I need help with the x-bosoz mine is fried and another psu down the drain I was getting 20V - and 35V positive. what have i done wrong ? im looking at the xcel sheet that they have put up on there site and its part for part.

Pic's can be posted if needed. R4 on the other boards is now toast
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Old 5th April 2006, 12:39 PM   #1002
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Jason, it sounds like you installed another diode backward which probably toasted R4. You likely need to replace R4 and the diode(s).
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Old 5th April 2006, 01:53 PM   #1003
jleaman is offline jleaman  Belgium
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No it-s in exactly the same way as the psu shows it.
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Old 5th April 2006, 04:57 PM   #1004
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When I was getting the low voltage on the positive side, it turned out to be my mistake in hooking up the transformer. One of the primary connections was not tight, so it was overloading and dropping below the required voltage for the regulator to have any effect. I would suggest carefully (these are dangerous volatges.) checking voltages upstream of the zener/FET to make sure you are not starving the regulator.

Only other thing I can think of is making sure the 610 and 9610 are not switched.

Craig
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Old 5th April 2006, 05:04 PM   #1005
jleaman is offline jleaman  Belgium
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This picture is exactly how i have mine built.
Attached Images
File Type: png ps.png (61.5 KB, 539 views)
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Old 5th April 2006, 05:12 PM   #1006
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Quote:
Originally posted by jleaman
This picture is exactly how i have mine built.

Jason, we all know how the circuit should look. A picture of yours might help.
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Old 5th April 2006, 05:18 PM   #1007
jleaman is offline jleaman  Belgium
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Quote:
Originally posted by Russ White



Jason, we all know how the circuit should look. A picture of yours might help.

I dont want to be rude, BUT my board is exactly part for part location for location and polarity for polarity.
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Old 5th April 2006, 05:21 PM   #1008
Mark Kravchenko --- www.kravchenko-audio.com
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Default Hi Jason!

Not to say anything bad about your skills. But an extra set of eyes never hurts when your dealing with a lot of small parts. Been down the same path your on more than once. Everytime someone will walk in and spot the problem in 5 minutes.

Mark
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Old 5th April 2006, 05:24 PM   #1009
jleaman is offline jleaman  Belgium
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The transformer is connected like this..


Positive rail.
white/oranged shorted to gether to get voltage of 60V it is a 2 x 30V

Yellow goes to AC+1
Black goes to AC+2


Negitive rail
The other transformer 2 x 12V orange/white shorted again to get 24V

Yellow goes to AC-1
Black Goes to AC-2


I can post a picture tonight when i get home I hope i didn't ruen any thing.
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Old 5th April 2006, 05:35 PM   #1010
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Close up pics of the top and bottom would be ideal. Did the second PS work until you hooked it up to the pre?
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