Managed to get the V401/V203 tubes out with a little bit of gorilla tape as a puller. The silicone puller I bought just slips right off them...
I swapped tubes, no changes. The switch seems to be working fine, when I first start playing with this thing, if I tapped the chassis it would click in the speaker, like a bad connection, etc. I took the bottom decks out, and dropped the front panel and saw nothing obvious poking around. Now that it's back together, its gone. A lot of the tubes do test "low" on my Heathkit TT-1 tube tester (TV-7 in the pile of stuff to restore/calibrate). V401 1. -.3 / 118k 2. .01 / 8.4 3. 5.8 / 6.2 4. 11.38 / 10.3 5. 21.9 / 1k 6. 21.9 / 1k 7. .013 / 8.4 V203 1. 0 / 107k 2. 0 / 3.5k 3. 0 / .3 4. 23.99 / 3.7 5. 10.5v / 8.8M 6. .17 / OL 7. 23.15 / 2k On Wed, Oct 1, 2025 at 8:08 PM Adam Morehouse <[email protected]> wrote: > Hey guys, > > Doing a little tinkering between classes (18 credits is awful...). I > decided to try out a R-392 that came with a T-195 I bought this summer. > It's nice and clean inside, no obvious defects - but is completely dead > below 8MHz. Any idea where I should start my search when I dig into this? > > Thanks for any help or pointers... > > Adam > ______________________________________________________________ R-390 mailing list Home: http://mailman.qth.net/mailman/listinfo/r-390 Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
