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Id call jeff and see if hed warranty it. He likely will, hes a reasonable guy.

Replace the caps and bleeders. If im not mistaken they are either 180 or 200uf 450v or 500v caps. Use 100kohm 5w resistors for bleeders.

Good 3m tape is rated for 600v per layer, a few good layers on each end will insulate it.

I would bet a close inspection of the caps once removed from the pcb would show a tattletale black mark somewhere. Disconnect the AC leads and secure them out of the way. Maybe with some electrical tape on them. Turn the supply on and you shouldn't have any issues if the caps are the issue. If...

More like 800-900vac

Both responses are correct, also one thing to take note of is that your state of tune will change depending on the amount of drive you apply. So if you tune this thing for one level of power, it'll change a little bit if you lower the drive significantly

Ha ha ha ha

Dont worry about that, i get stuff from there all the time. Packages get through no issues.

I mean, if it literally "just needs tubes" i might do it. But if i had it, spending 125-250 for a set of tubes to maybe get 700w on am... I dunno. A gi7b would make same power with that supply and they are $30.

I think production stopped on these right around the time of the original post. Perhaps @nomadradio knows better. My opinion, they were cool 18 years ago when they were cheap. But for perspective, an ameritron al811h was $900. Now its ~$1500. Interestingly the cb market's customers have not...

Whut? Where can i buy a magic 572B?

Whoops, i thought it was captain kilowatts build. Now i see it was someone else.

Whatever happened to this project? Did it ever get off the ground?

Building tube based amplifiers is 95% metal work, specifically cutting holes just right and putting them in ideal locations. The electrical part is very little time honestly. I can build almost any size amplifier in about 16-24 hours working time. The wiring and tune up / optimization process...

You could have built a new amplifier in the time spent repairing this one.

Veh cool. I haven't seen this model in 20 years.

Shorting switches are certainly superior, if you can get a big one. If guys would use an mfj to tune their tuners up before using power it would save them. Also, just dont move the roller under power. Move it a bit, then test.

Are you using it on the ham bands or just cb?

You didnt say you were an outboard audio guy.enjoy it

Squeals are always rf getting into the mic audio