ST70 too bright...why?

OK, here's what I've got so far. With my (new) Fluke 27 I'm seeing 415v at the VTA board B+. Does anyone know if this is good, bad or indifferent?

Just got the meter and haven't had time to take the amp out of my setup to check the main B+ voltage. I suspect my cheap meter wouldn't even read the 415 volts without showing an overload warning so my main B+ may be ok after all. Wall voltage right now is 121.3v.

If you are measuring voltages, please measure the ones mentioned on page 9 in the dynaco st70 manual,

415V seems reasonable however.

PeterH, I'm seeing 384vac at pin 6 of the rectifier tube and 472vdc at pin 8. This is with 122.2vac at the wall.

tygr1 wrote:PeterH, I'm seeing 384vac at pin 6 of the rectifier tube and 472vdc at pin 8. This is with 122.2vac at the wall.

Seems very reasonable with that wallVoltage.

Peter, and everyone,
anyone who buys a VTA board from me or Bob gets full documentation, with voltage checks and schematics.
B+ to the board should be around 380-400vdc after going thru the supplied 2.2K dropping resistor.
All other voltages on the board are marked on the schematic.

Thanks for that guys!

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I did buy the amp already modded and do not have the documentation. So, much thanks to everyone who offered info!