[R-390] The second 390A
dog
agfa at hughes.net
Wed Jul 17 22:23:18 EDT 2019
I got the second RX put back together today, new meters, all the stuff
soldered back in place, all the modules installed, new re-wired PS with
the tubes, turn it on and it plays, noise from the headphone jack, BW,
BFO, Meters, etc seem to work. Check the osc voltages and E209 is
-9.4VDC, E210 is -2.2VDC, E211 is -2.65VDC, (not too bad) but E402 is 0.
Test the #1 390A which is working and the E402 is also 0VDC. What is
going on here? I haven't put RF into the newly fixed input yet.
I also need one of those BNC to mini BNC adapters (J116) for the IF
module. Stole it out of the other RX for now to test stuff. I don't
think I every got a DC voltage reading on E402 in the past, I'm
wondering what that is about, especially when the fixed RX works?
Got a lot done today getting the old one back together without too much
missing.
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