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Old 4th September 2013, 08:03 PM   #11
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thanks for the imput guys ill check it out and ndcraig my 7300 looks different than the one you pictured mine has two big blue capactiors inside and the imput jacks connect to a circuit board it looks like new inside as it has never been out of the rack since the day it was brand new I did notice when I checked the xlr in jacks that all three pins have continuity between them I don't think they should im thinking the input board may be the problem I will try and post some pictures soon
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Old 4th September 2013, 09:25 PM   #12
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heres a few pictures of my map
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Old 4th September 2013, 09:28 PM   #13
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I have not cleaned it this is how it looks after 25 years
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Old 5th September 2013, 01:17 AM   #14
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thanks for all the help I found the problem the xlr inputs are shorted to ground I was using the amp mono 1/4 in then jumping xlr channel 1 to 1/4 channel 2 then both channels out if I use both 1/4 in and leave the xlrs out of the mix the amp works fine I don't know what happened as I used it xlr to 1/4 for years with no problem all I can think is the board shorted any way thanks guys this is a great forum
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Old 5th September 2013, 03:36 AM   #15
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Quote:
Originally Posted by tamaman View Post
thanks for the imput guys ill check it out and ndcraig my 7300 looks different than the one you pictured mine has two big blue capactiors inside and the imput jacks connect to a circuit board it looks like new inside as it has never been out of the rack since the day it was brand new I did notice when I checked the xlr in jacks that all three pins have continuity between them I don't think they should im thinking the input board may be the problem I will try and post some pictures soon
It looks like mine is actually a 7300"A" - a later model, and last version of the amp. It seems to have the same specs for output, so don't know what the differences are.
I have had both versions and never really noticed any differences in the performance.
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Old 5th September 2013, 01:05 PM   #16
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yea ndcraig the 7300a was a little different and this is a great amp like I said I got it working it was just a xlr input shorting out and not allowing a strong input signal all is good
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