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1. [TenTec] Hercules II repair: 253 tuner relay (score: 1): Author: JACrux <G3JAG@patents.freeserve.co.uk>; Date: Mon, 14 Nov 2005 16:16:10 +0000; The eight transistors are matched. Swapping just one or two out for unmatched replacements could spell trouble. A note I added to figure 4-6 of my Herc manual says set the bias for an idling current; /archives//html/TenTec/2005-11/msg00235.html (9,721 bytes)
2. Re: [TenTec] Hercules II repair: 253 tuner relay (score: 1): Author: "Phil Chambley, Sr." <k4dpk@comcast.net>; Date: Mon, 14 Nov 2005 14:20:15 -0500; Interesting.... I have never believed it necessary to change all eight when only one is bad. It is only necessary that individuals in pairs be matched, then balance all four of the push-pull amplifie; /archives//html/TenTec/2005-11/msg00236.html (11,151 bytes)

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