Author: John DiLorenzo <john.dilorenzo33@gmail.com>
Date: Fri, 28 Nov 2014 14:48:46 -0500
I acquired this amplifier about two weeks ago, and when I received it, neither theforward nor reflected power meters would indicate anything. As a "test", Ireplaced the detector diodes (D114 and D115
In sure that the relay isn't stuck. They handle a fair bit of current and sometimes the contacts weld closed. Check all the components in the step-start circuit, too, to make sure they are all workin
The first thing Id check is to see if the relay contacts are welded, Ameritron uses the wrong contact alloy for high current use. Also check that the step start circuit is wired per the manual as Ame
Or a shorted tube will take out the step start fuse and resistors. 73 Jim W7RY The first thing Id check is to see if the relay contacts are welded, Ameritron uses the wrong contact alloy for high cur
If you simply remove the tube and problem persists, it's not the tube. Given what you saw, I doubt the tube is the problem. Kim N5OP "People that make music together cannot be enemies, at least as lo
Author: John DiLorenzo <john.dilorenzo33@gmail.com>
Date: Fri, 28 Nov 2014 19:15:40 -0500
Thank you all for the replies. The blown fuse is the 2A fuse in series with the step-start current limit resistor, not an input fuse. I don't think the the relay has failed with the contacts closed (
Author: John DiLorenzo <john.dilorenzo33@gmail.com>
Date: Sat, 29 Nov 2014 21:40:17 -0500
Well, I got my problem figured out. I opened up the unit to replace the fuse and to see if there were any problems I could see. I examined the step-start relay (an open frame type), and tried to move
Excellent! May all your bugs be that easy to find and that low-impact. -- Mike Andrews, W5EGO mikea@mikea.ath.cx Tired old sysadmin _______________________________________________ Amps mailing list A