[Milsurplus] VR tube question

[WA5CAB at cs.com]

Probably not three bad tubes in a row.  I think the only 195's I have are 
either A's or B's but in any case are a mile away and not currently available 
to look at.  But another thing to check is this.  According to the early TM 
11-806 on the base T-195, pins 1, 5 and 6 are tied together at the socket 
(or 1 and 5, as mentioned earlier, are connected internally in the tube).  
According to one tube manual, pin 6 is marked IC (internal connection).  If 
there is a wire coming off of 6 and/or a jumper between 5 and 6, move the wire 
to 5 and/or remove the jumper.  

In a message dated 9/15/2010 1:58:52 PM Central Daylight Time, 
robert.h.goff at gmail.com writes: 
> Greetings to the list.  I'm hoping someone can help me-I'm a pretty
> inexperienced serviceman.
> 
> I've been working this morning on a T-195 with (apparently) no MO
> output.  I've traced the problem back to the voltage regulator module
> next to the PTO.
> 
> Checking at the MO plug I had no +150V regulated.  I checked the
> limiting resistor which is 3K-just like it's supposed to be. But, when
> I replaced the OA2 with 2 others I had, there was no change-still no
> 150V.
> 
> When I pull the regulator tube I have 250 volts at pin 1, with the
> tubes in this drops to nothing.
> 
> Is this just a case of three bad 0A2s?
> 
> Help!
> Robert
> W7MKA
> 

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480