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Ev p 3000 power amp fault
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ceharden View Drop Down
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Joined: 05 June 2005
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Points: 11776 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 25 May 2011 at 1:09pm
The other fault I've seen which can cause some odd things to happen are the thermistors on the output board going intermittently open circuit.
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service dept Steve View Drop Down
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Points: 2034 		Post Options Post Options   Thanks (0) Thanks(0)   Quote service dept Steve Quote  Post ReplyReply Direct Link To This Post Posted: 25 May 2011 at 4:03pm
Originally posted by ceharden ceharden wrote:

Also, does the output from the two channels look the same on the scope, same clipping points under load etc?  The current limiting circuits could potentially cause oddities like this too.


What does the output signal look like on the 'scope?
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Tan-2 View Drop Down
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Joined: 29 April 2011
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Points: 255 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tan-2 Quote  Post ReplyReply Direct Link To This Post Posted: 25 May 2011 at 4:32pm
will re look into that and disconnect to cable and check o/p end...
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Points: 255 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tan-2 Quote  Post ReplyReply Direct Link To This Post Posted: 25 May 2011 at 4:35pm
just having a break from it at the moment....as it's driving me round the bend...
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Points: 255 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tan-2 Quote  Post ReplyReply Direct Link To This Post Posted: 25 May 2011 at 4:40pm
will warm up the scope later and recheck the sine wave at the o/p's of both channels..
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Joined: 29 April 2011
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Points: 255 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tan-2 Quote  Post ReplyReply Direct Link To This Post Posted: 28 May 2011 at 2:05pm
gonna give this ev a rest for the weekend and start a fresh next week...will get it to work correctly Smile
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