quadhifi : QUAD HiFi audio group

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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 stefaanverdo... Offline Send Email
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 michaelredman Offline Send Email
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 Offline Send Email
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 stefaanverdo... Offline Send Email
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 michaelredman Offline Send Email
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	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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