I was reading with entrust about the FU728 tube failure and heater
voltage . I understand the heater voltage should be 9 volts , Checking
my heater voltage on my new OMPower 2000+ It's reading 8.7 volts most of
the time , sometimes flickering to 8.8 volts .... I've seen it as low as
8.5 volts on occasion's . At 1500 watts much less ..This has been a
concern sense buying the amp close to two months ago . I've had one tube
arc last week that blew a small fuse near the tube while using it on SSB
. The amp was tuned properly and I was not tuning when the fuse blew .
Am I safe with the heater voltage at these levels ?
When the fuse went , I was thinking of moving the tap from 240V to 230V
but it was already on the 230V tap ... Thought about moving it to 220
but left it where it was at . My line voltage reads 240 to 245.
Thanks for reading , like to hear your thoughts . Ed N5DG
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