Turn amp on and observe two things, as soon as?you turn it on look for your grid meter going negative and or the plate meter reading positive. ?Look for you tubes starting to gest up in a minute or two. ?If any of these happen report what you see. ?You may have developed a tube short or a loss of cut of bias. ?Report the findings here when you have them. Lou
On Tuesday, November 28, 2023, 11:43 PM, John Roland <johnroland51@...> wrote:
Hi Everone,
I've owned this amp about 5 years but used very little. The amp was refurbished (new tubes, and relays) by a guy in north Idaho about 2017, just before I bought it. I have tried to contact him but get no response.
A couple weeks ago in the middle of a QSO I sensed some unusual heat from the amp and noticed the tubes were both cherry red. I shut it down immediately.? I have tuned it up a couple times since and the symptoms reoccur. ? I am (obviously) not an amp guy or much of a technician so I have 2 questions.? 1.? Is this a symptom of something that might be easily confirmed and repaired by me, ? and if not ? 2.?? Is there anyone in the Portland-Seattle-Vancouver BC area I might take it to for repair?
Thanks for any help or ideas
John
W7SWB
Does
