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[TenTec] Paragon 585

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: [TenTec] Paragon 585
From: ROLAND HOWELL via TenTec <tentec@contesting.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Fri, 25 Sep 2020 18:29:17 +0100 (BST)
List-post: <mailto:tentec@contesting.com>

Hi All

Now started work on my 2nd paragon:-

A: 1st indication is all the LED tell tales on the front panel are illuminated, ( operating mode, filter selection etc) non will turn off, no digits in the display there is however all the legends on the very top of the display.

B: 2nd, on the Low Level Amp/noise blanker PCB, the MRF476 get hot very quickly, this transistor is driven by a 2n3866, these have been known to cause problems, i took it out and tested it, then compared the results from the testing of another identical transistor, exactly the same, that's either both good or both faulty!

C: Have changed c49,c52-54,c56 on the Logic Board just in case it was a problem as advised on the 1st Paragon i worked on.

Have any of you learned gents met this problem before?.

Stay well and healthy

73

Snowy G0HZE


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