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 Post subject: rogers majestic tubes model 7R561
PostPosted: Dec Wed 06, 2017 2:44 am 
Member

Joined: Nov Sat 09, 2013 5:24 pm
Posts: 202
Location: Dundas/Ontario/Canada
Hi.From left to right. Original were 1C7M NOW 1F5G/// 34M NOW 1F7G///34M NOW 1C7G///1F7M NOW 1D5GA///1F5G NOW1D7EC.

TEST ON TUBE TESTER HEATNIK IS 100%
1F7G 1st TEST GOOD AT MORE THAN 100%. I REDUCED THE PLATE TO 30 AND IT TESTED100%
2nd TESTED AGAIN OVER 100% GOOD. REDUCED PLATE TO 60 & TESTED 100%.
1C7G 1st TESTS 100% GOOD. 2nd TEST 83%
1D5GP tESTS AT 55%
1D7EG. TOTALLY BAD ON BOTH TESTS.
Attachment:
Rogers attic ant radio.jpg
Rogers attic ant radio.jpg [ 118.66 KiB | Viewed 152 times ]
When I say TESTS for example:TUBE 1F7G TESTS DIFFERENTLY WITH 2 DIFFERENT CORDINATES. Why does it test at more than 100 on both cordinates?

Is tube 1D7EG the reason why none of the light up. Should I also replace ID5GP.
Help is always very much appreciated Thanks


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 Post subject: Re: rogers majestic tubes model 7R561
PostPosted: Dec Wed 06, 2017 8:25 pm 
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Joined: Oct Wed 28, 2009 1:17 pm
Posts: 2015
Location: Kingston Ontario
Hi Cec
I sent you the schematic it is the 7R561 buty I sent it as a 7R651 MY MISTAKE IN PRINTING IT OUT.
Bruce


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 Post subject: Re: rogers majestic tubes model 7R561
PostPosted: Dec Thu 07, 2017 2:02 am 
Member

Joined: Nov Sat 09, 2013 5:24 pm
Posts: 202
Location: Dundas/Ontario/Canada
Hello. Where can i order/purchase tube 1D7EG or an acceptable replacement. Help is always appreciated. Thx


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