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texas star 400

What starts to smoke? Can you post pic with the lid off.
It sounds like it is taking off when you key up, unstable.
What component in the amp is letting out the smoke, that tells a tale.

Ok the way i had it to work was if the am and ssb buttons are pushed in at the same time if i push am only it sticks..
I wouldn't operate it if you know it is smoking - or else it might have a complete failure. The output looks OK, so the finalss should be OK. Sounds like you are over-driving the amp. BTW, you aren't using a Cobra 29 if you are going to sideband; so I suspect you are over-driving the amp!

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