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NAD T-754 no audio output
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dturco



Joined: 06 Feb 2009
Posts: 3778
Location: Eastern Shore Maryland

TV/Projector: Runco DLP VX-3000i Marquee 9500 parts doner

Posted: Fri Jul 13, 2012 3:14 pm    Post subject:
macgyver655 wrote:
Do you have test leads with the hook clips? http://www.ebay.com/itm/1-pcs-Small-Test-Hook-Clip-to-Banana-Plug-for-Multimeter-Test-Lead-Cable-100cm-/251016735649?pt=LH_DefaultDomain_0&hash=item3a71c36ba1


No. Just the straight pin type.
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macgyver655



Joined: 22 Aug 2007
Posts: 8508
Posted: Fri Jul 13, 2012 3:14 pm    Post subject:
Those foil covered ribbon cables disconnect from that main board, correct?
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dturco



Joined: 06 Feb 2009
Posts: 3778
Location: Eastern Shore Maryland

TV/Projector: Runco DLP VX-3000i Marquee 9500 parts doner

Posted: Fri Jul 13, 2012 3:20 pm    Post subject:
macgyver655 wrote:
Those foil covered ribbon cables disconnect from that main board, correct?


Yes they do. They are held in place by a clamp on the end? Its like a guide more than a clamp? But yes they can be removed.
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macgyver655



Joined: 22 Aug 2007
Posts: 8508
Posted: Fri Jul 13, 2012 3:22 pm    Post subject:
Then get a set of those hook clip test leads and we can continue. Of course the link I posted is from China so is there a local electronics store near you?
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macgyver655



Joined: 22 Aug 2007
Posts: 8508
Posted: Fri Jul 13, 2012 3:27 pm    Post subject:
Ratshack has some if there is one near you. http://www.radioshack.com/product/index.jsp?productId=2062624

Or make your own..... http://www.radioshack.com/product/index.jsp?productId=2062232
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macgyver655



Joined: 22 Aug 2007
Posts: 8508
Posted: Fri Jul 13, 2012 3:29 pm    Post subject:
I dont like the adapters though. They are to long for most cases when assembled... http://www.radioshack.com/product/index.jsp?productId=2062221
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macgyver655



Joined: 22 Aug 2007
Posts: 8508
Posted: Fri Jul 13, 2012 3:30 pm    Post subject:
The kit is ok if you want more of an assortment.. http://www.radioshack.com/product/index.jsp?productId=11931581#
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dturco



Joined: 06 Feb 2009
Posts: 3778
Location: Eastern Shore Maryland

TV/Projector: Runco DLP VX-3000i Marquee 9500 parts doner

Posted: Fri Jul 13, 2012 3:46 pm    Post subject:
Will any of these from Sears work?

http://www.sears.com/shc/s/tools-electricians-tools-lighting-multi-meters/s-1021185?keyword=multimeter+leads&viewItems=25&autoRedirect=true&redirectType=CAT_REC_PRED
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macgyver655



Joined: 22 Aug 2007
Posts: 8508
Posted: Fri Jul 13, 2012 4:05 pm    Post subject:
Yes, either one of these should be fine.

http://www.sears.com/extech-electronic-test-lead-kit/p-03416265000P?prdNo=2

http://www.sears.com/craftsman-test-lead-kit-with-storage-pouch/p-03482399000P?prdNo=1
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dturco



Joined: 06 Feb 2009
Posts: 3778
Location: Eastern Shore Maryland

TV/Projector: Runco DLP VX-3000i Marquee 9500 parts doner

Posted: Fri Jul 13, 2012 5:04 pm    Post subject:
macgyver655 wrote:
Yes, either one of these should be fine.

http://www.sears.com/extech-electronic-test-lead-kit/p-03416265000P?prdNo=2

http://www.sears.com/craftsman-test-lead-kit-with-storage-pouch/p-03482399000P?prdNo=1


I'm going to Sears. I'll post when I have the test leads.
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dturco



Joined: 06 Feb 2009
Posts: 3778
Location: Eastern Shore Maryland

TV/Projector: Runco DLP VX-3000i Marquee 9500 parts doner

Posted: Fri Jul 13, 2012 8:38 pm    Post subject:
I'm back. I bought the Sears pouch one.
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macgyver655



Joined: 22 Aug 2007
Posts: 8508
Posted: Fri Jul 13, 2012 8:44 pm    Post subject:
Very good. I've been looking at your second image and it looks like if you disconnect the foil ribbon nearest the heatsink you should be able to use those hook clip leads to the legs of those regulators. Then lay the wires down and reconnect the foil ribbon and test the voltage. 1 at a time naturally.
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dturco



Joined: 06 Feb 2009
Posts: 3778
Location: Eastern Shore Maryland

TV/Projector: Runco DLP VX-3000i Marquee 9500 parts doner

Posted: Fri Jul 13, 2012 9:08 pm    Post subject:
Man there is still sh*t blocking the way


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macgyver655



Joined: 22 Aug 2007
Posts: 8508
Posted: Fri Jul 13, 2012 9:20 pm    Post subject:
You can bend those orange disk caps away from the regulators to give you some more room.
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dturco



Joined: 06 Feb 2009
Posts: 3778
Location: Eastern Shore Maryland

TV/Projector: Runco DLP VX-3000i Marquee 9500 parts doner

Posted: Fri Jul 13, 2012 9:35 pm    Post subject:
macgyver655 wrote:
You can bend those orange disk caps away from the regulators to give you some more room.


I have. C-733> 0.501 > VDC.

Are we getting anywhere?
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macgyver655



Joined: 22 Aug 2007
Posts: 8508
Posted: Fri Jul 13, 2012 9:42 pm    Post subject:
You should be connecting to the regulator legs, which are the U numbers. Go back to my image to show what legs to connect to.
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dturco



Joined: 06 Feb 2009
Posts: 3778
Location: Eastern Shore Maryland

TV/Projector: Runco DLP VX-3000i Marquee 9500 parts doner

Posted: Fri Jul 13, 2012 9:45 pm    Post subject:
My mistake I read the board wrong. The C-733 is the little orange thing in front of the U-707 the leads are attached to. The reading is the same power on or off.

U-707> 0.501 > VDC.

U-705> 0.643 power on> 0.653 power off.

U-703> 179.5 power on> 87.1 power off
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Last edited by dturco on Fri Jul 13, 2012 10:37 pm; edited 1 time in total
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macgyver655



Joined: 22 Aug 2007
Posts: 8508
Posted: Fri Jul 13, 2012 10:30 pm    Post subject:
Something is not right. And where is U733?
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dturco



Joined: 06 Feb 2009
Posts: 3778
Location: Eastern Shore Maryland

TV/Projector: Runco DLP VX-3000i Marquee 9500 parts doner

Posted: Fri Jul 13, 2012 10:37 pm    Post subject:
macgyver655 wrote:
Something is not right. And where is U733?


Doah U-707 Embarassed
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macgyver655



Joined: 22 Aug 2007
Posts: 8508
Posted: Fri Jul 13, 2012 10:38 pm    Post subject:
Lets just do 1 first. U707. Pos clip lead on the right outer leg and the neg lead on the center leg. DMM on DC. Power on, whats the voltage?
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