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City: Sandwick, BC, CA
(02-03-2015, 12:55 PM)morzh Wrote: Kirk
Before you mail it to me, see if
1. The field coil conducts (on the order of 1kOhm or so..units of kOhms),
2. Primary of the output transformer is good (a few hundred Ohms to a few kOhms).
If yes, let me know first, as I will try the one I have tonight, and if it works, we could skip that mailing things, as the less stuff I have right now the better, considering the impending move.
3. If it comes to shipping, throw in a power cord if you have one you want installed.
4. And the 42 tube is weak. Will likely work, but keep in mind it is weak (800 vs 1600 req min for a new one) and a stronger one might work better.
But I am getting ahead of myself, let's first hear it speak.
Mike;
I think that this set uses a #45 for a power output tube, is that the one that's weak? I see that in the pictures posted the #45 appears to be an older balloon type, before you write it off as weak it may be worth having a go at desoldering and re soldering the pins on the base. I've noticed that on those 2.5 volt AC tubes in general, and on the earlier ones specifically, the solder they used on the pins is not that great and builds up some resistance, the grid and filament pins are especially prone to this. I've taken the bases off of some of these types of tubes with lacquer thinner, sanded off the leads, cemented the base back on with windshield adhesive, resoldered the leads to the pins, and wound up with a good tube. Other then that it should be possible to find a good used #45 in ST style, if not then a 1619 with adapter, or a 2A5 or 47 with adapter, would work.
Regards
Arran
Arran
(This post was last modified: 02-05-2015, 01:13 AM by Arran.)
Messages In This Thread
RE: Kirk's Jackson Bell 62 - by Arran - 02-05-2015, 01:13 AM
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