[Collins] Need help on a 32S-1 transmitter

[David Murman]

I am in need of some technical help with a Collins 32S-1 transmitter that I
purchased. The previous owner said he got excellent reports with it before
he put it on the shelf. When I got the transmitter it was not working at
all, had one tube that the filaments did not light and I had to replace a
number of the tubes. After replacing the defective tubes I still got no
power out.

Well I tuned up the transmitter on 3.6 mhz with my scope as per the manual
and up to the final gird I have power but I see no grid current on the meter
nor much power out ( about 1-2 watts). I noticed that I can peak the exciter
tuning but when I dipthe pa tuning the power to the input to the finals goes
down. I do get a good dip but then again I only see about a 1 or 2 watts out
and NO grid current. Rocking the pa tuning I see the power increase to the
grid of the final.

Looking at the coil in the final area it looks like it was re-soldered. I
don't have any idea if the taps are in the right area. I have attached a pic
of the coil.

Also the manual I downloaded from the Collins page is missing page 11 and 12
and there is no good parts layout that I can find on the web.

Anyone have any ideas as to the issue with the grid curent and PA loading
not giving increases power when dipped? Also anyone have page 11 and 12 and
any parts layout of this transmitter that they can send me?

Would really like to get this transmitter working with my 75S-3.



Thanks;
David
WA4ECM