Hi,
I built a 5F8-A with mercury Magnetic PT
After an hour of playing, the Pt kind of hot.
I can put my hand on it without burn
The 2 primary wire are black,
Swiching it may solve the issue or it's normal for a 100W ?
it's my first 100W build
Thanks !
Dave
How hot the PT suppose to be ?
Moderators: pompeiisneaks, Colossal
How hot the PT suppose to be ?
Last edited by DaveWell on Fri Jan 26, 2018 3:35 am, edited 1 time in total.
Re: How hot the PT suppose to be ?
If it's not too hot to touch after an hour or more, no problem.
I can't imagine that swapping the primaries would make any difference.
I can't imagine that swapping the primaries would make any difference.
I build and repair tube amps. http://amps.monkeymatic.com
Re: How hot the PT suppose to be ?
Oufffff !
Thanks a Lot !
Thanks a Lot !
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Re: How hot the PT suppose to be ?
If this level of hot is with the amp out of its cabinet then you have , or will have issues in a certain amount of time, but can't say as dependant on useage it may take years !
How much heater voltage to you read, under 6.3?
Does the heater voltage drop off as the PT gets hot?
What is the amps V+ voltage in standby?
What is the V+ voltage in play mode?
If you pull out one of the output tubes how much does the heater voltage and the plate voltage change?
If I could I would get my hands on a thermal gun and see what it is you do have for temps!
How much heater voltage to you read, under 6.3?
Does the heater voltage drop off as the PT gets hot?
What is the amps V+ voltage in standby?
What is the V+ voltage in play mode?
If you pull out one of the output tubes how much does the heater voltage and the plate voltage change?
If I could I would get my hands on a thermal gun and see what it is you do have for temps!
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!