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Old 21st February 2015, 03:17 PM   #1
diyAudio Member
 
Join Date: Feb 2015
Default sound distortion

Hi I have recently brought a ferguson 400RG radiogram.
im very happy with it play my rock n roll records great.
But I do seam to have one problem.When it is nice & warged up, say about 1 to 2 albums of play,the sound starts to distort.When cool again the same record plays great.
Does anyone have any ideas what my be the problem?

many thanks
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Old 21st February 2015, 05:01 PM   #2
rayma is offline rayma  United States
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Location: Upper midwest
Quote:
Originally Posted by dave42west View Post
Hi I have recently brought a ferguson 400RG radiogram.When it is nice & warged up, say about 1 to 2 albums of play,the sound starts to distort.When cool again the same record plays great.
Does this happen on the radio as well as phono?
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Old 21st February 2015, 05:08 PM   #3
DF96 is offline DF96  England
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Join Date: May 2007
Could be thermal runaway in the output valve, caused by either a gassy valve or a leaky coupling capacitor.
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