My Brand New CTC-7!

[old_coot88]

If he's replaced the cap that parallels the reactance coil, he oughta double check that it's the right value, since it's critical.
Surprizin' nobody's chimed in about the crystal (or maybe I missed it).

[Phil Nelson]

Page 18 of the Sams manual has a resistance chart showing what resistance you should measure at each pin of each tube. It's worth spending a couple of minutes to check the resistances on the 6U8A tube and compare them to the chart. These readings involve more than individual resistor readings.

If you don't have the Sams manual, send me an email via http://antiqueradio.org/contact.htm and I'll mail it to you.

Phil Nelson

[DaveWM]

double check work done (cap values and connection points)
look for crossed wires (lead dress of parts on point to point)
check pin continuity of tube sockets to circuits
use sams as a rough guide on resistance (don't get too hung up unless dif are huge, there are lots of caveats on those, read the notes)

a new xtal is a good idea just to eliminate it as an issue, not likely but no real good way to test.

test equipment is the problem, with out a good scope you are hoping to find the problem. So it comes down to guessing based on observation.

Hard to say if the coil diddling could now cause a new problem. If it was mine I would do all the above report back findings and try a new xtal. I prob have one laying around here somewhere but will have to dig around to find it.

for now NO more coil adjusting until at least you do the above. then will prob have to try the procedures laid out for adjustment of the coils that have been adjusted, mainly peaking out the T704.

[SwizzyMan]

I have an RCA WO-33 scope is that suitable? I am just not very acquainted with scopes. What is an xtal?

[DaveWM]

xtal is the crytal 3.58.... MHz

[SwizzyMan]

Where could I find one? Just google it? Or does mouser have it? And what specific package? The canned type?