Correcting the misprinted descriptions of TV-2 Tube Tester
Maintenance Manual:
Part 1 Number 1, as of May 18th, 2003

You will doubt what I am going to tell you about the descriptions of the US Military TV-2 Tube Tester Manual:
TM 11-6625-316-35/FIELD AND DEPOT MAINTENANCE MANUAL TEST SETS, ELECTRON TUBE TV-2/U, TV-2A/U
TV-2B/U, AND TV-2C/U.
Can there be any mis-prints in such an authoritative manual for the Military Forces?

In an attempt to repair some of the broken TV-2B/U Military tube testers that I have so far imported from a Military Surplus store in the United States, I had to read through and through a lot of descriptions about the workings of this great tube tester, This tube tester has turned out to be something like a strange object whose inside circuits and circuit design were unknown to meand completely different from the circuits I am familiar with in other tube testers like Hickok 6000A, 800A or TV-3, and TV-7 series tube testers. I had thought that TV-2 tube testers too must be similar in their circuit designs, and would be a piece of cake to repair them, because tube testers depend on the OHM's law and with a simple multi-meter and with some experience I had hoped to
repair them. But I was wrong, because TV-2 tube testers are far more complicated sophisticated sort of tube testers, and it is like something unfamiliar like a substance from another planet!???

While trying to repair these tube testers, I came across a number of mis-printed values in voltages, and in terms of electrical principles, these mis-printed portions are easy to doubt, but while you are busily trying to repair the tube testers, you may be easily deceived by these descriptions, and will waste lots of your time.
So here they are:

On page 18 of the Maintenace Manual, there is Figure 12 with three Basings of Rectifier Tubes, V1 83, V2 6X4, and V3 6X4.And among the voltages at the tube pins, the voltage specified at the sixth pin of V3 6X4 is wrong. It says the voltage is 210V AC. But the real value is just the same as the first pin, 80V AC. They are the voltages applied to the plates of the full wave rectifier tube, and they must be the same anyway.
 210V AC is WRONG and CORRECT VALUE is 80V AC
I also came across another mis-prints on the next page, Page 19.
On the RESISTOR MOUNTING BOARD Voltage and Resistance Diagram you will find voltages and resistance values of each part of the tube tester circuits. Do not believe all of them, Some of them are mis-prints, and I found the right-hand terminal voltages of R23, R20, and R19 are not correct. Figure 13 says their voltages are 265V DC, but by careful verifications, I have found out that they are not 265V DC, but 265V AC. So the descriptions should be read as 265V AC as proper voltages to be measured, I cross-checked these voltages in good-working TV-2 tube testers. And my judgment proved to be correct!
265VDC is WRONG and CORRECT VALUE is 265V AC.

To be continued;
All Rights Preserved;
Philip Y. Shibuya/JA3KEV