The Dose of Harmony
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- Joined
- Nov 21, 2014
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HI Guys,
Need some help here , i need some direction its the second time that the VM , burns the 2A fuse under the power cable and one of the power tubes , but only does it when i max out the master ,
last year was the first time it had the original , I remember that i crank the master volume to the Max a few times no issues , one finally one of the tubes burn out burn the fuse so i thought might be a power tube failure
next time was last week same thing only this time it did not lasted that much time with the master volume up , burnt tube burnt fuse
so i decided the to check some things I have a Eurotubes probe and it reads around 425 V on the plate voltage on Both sides , Now
the current plate on one side was 45ma but the other side at first was reading 48ma but when i max out the master volume started to increase and at the very end when up to -175 ma so i turned off as soon as i saw that
today i opened put the Eurotubes probe but i tested with my multimeter at the testing pins too , but todays has not done that its been steady
any ideas what to check?
thanks
Need some help here , i need some direction its the second time that the VM , burns the 2A fuse under the power cable and one of the power tubes , but only does it when i max out the master ,
last year was the first time it had the original , I remember that i crank the master volume to the Max a few times no issues , one finally one of the tubes burn out burn the fuse so i thought might be a power tube failure
next time was last week same thing only this time it did not lasted that much time with the master volume up , burnt tube burnt fuse
so i decided the to check some things I have a Eurotubes probe and it reads around 425 V on the plate voltage on Both sides , Now
the current plate on one side was 45ma but the other side at first was reading 48ma but when i max out the master volume started to increase and at the very end when up to -175 ma so i turned off as soon as i saw that
today i opened put the Eurotubes probe but i tested with my multimeter at the testing pins too , but todays has not done that its been steady
any ideas what to check?
thanks