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Description

How thankful we're for Quad, for instruments and voices

It wondrous things hath done, in which sound world rejoices

From Walker's earliest steps that sent Quad on its way

With innovative gear that still sounds good today

O may this bounteous Quad through all our lives be near us,
With ever joyful sounds that never cease to cheer us;
And keeps us from the craze to upgrade when perplexed;
And frees us from the ill about what to buy next!

All praise and thanks to Quad, which gives musical heaven
Quad II, three-three, four-four, 303, fifty seven,
Although we find it sad that Huntingdon's no more;
The Real Thing soldiers on, and shall for evermore.

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Re: Buzzing noise from quad 303 channel
As the electrolytes were replaced by Netaudio during the revision C101 should be OK normally. Checking the transistors with a transitor-tester is quite easy
Posted - Wed Nov 25, 2009 12:38 pm
Stefaan
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Re: Buzzing noise from quad 303 channel
Cheers esmond, I'll report back if I find the problem. Mike. ... From: ejp286 <esmond.pitt@...> Subject: [quadhifi] Re: Buzzing noise from quad 303
Posted - Wed Nov 25, 2009 9:32 am
mike redman
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Re: Buzzing noise from quad 303 channel
The first suspect is C101. Check for dry joints; swap it with the other channel to see if the fault moves. Then I would look at transistors starting from the
Posted - Wed Nov 25, 2009 6:25 am
ejp286
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Re: Buzzing noise from quad 303 channel
Hi Mike, The 303 Service Manual is available on the website again. To check what transistor (or other component) is broken you should check the different
Posted - Tue Nov 24, 2009 11:39 pm
Stefaan
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Re: Buzzing noise from quad 303 channel
thanks Stefaan, But which transistor and there is no 303 service manual on the site. the quiescent current was fine. mike. ... From: Stefaan
Posted - Tue Nov 24, 2009 7:23 pm
mike redman
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Message History

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2009 143 109 140 75 46 161 70 27 42 108 34
2008 182 115 186 83 37 25 70 57 62 51 46 59
2007 80 127 148 91 143 126 133 41 67 143 91 112
2006 283 105 119 122 108 79 105 113 137 213 103 114
2005 164 135 200 75 120 241 137 82 161 167 114 151
2004 262 144 130 150 211 196 167 93 134 141 173 33
2003 75 69 47 34 41 89 60 23 73 112 31 43
2002 119 170 264 46 51 79 70 120 110 64 32 50
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