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  #28  
Old 05-18-2014, 09:31 PM
compucat's Avatar
compucat compucat is offline
1949 Motorola 9VT1
 
Join Date: Apr 2005
Location: Suffolk, VA
Posts: 970
Quote:
Originally Posted by Magnavox300 View Post
Thanks for the tips on the HV tube!
I would never have known...
I actually just changed that tube, a 1B3 I think, since the old one tested bad...

I do have another tube, but I am wondering since it is in the High Voltage cage,
is it safe to put my hand in there and just change it, if I'm careful not to touch anything else? I just had the set on for about three hours...
Make sure set is switched off and unplugged. Carefully remove the plate cap so as not to break any wires and remove the tube. You might have to try a few tubes to get one that works well in your set. Also make sure your power supply voltages are up to scratch so you don't have low B+ contributing to your problem. Those tacked on electrolytic capacitors will need to be tidied up.
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