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The meters peg for a split second on power up before relay clicks. This does not seem normal?

.360 left .367 right

Millivolts dc or ac?

0.01 on 2 volt scale

Relays clicked at about 180 and 190 volts ac. Went up to 230v

Dc offset 0.01 both channels at 142volt ac. Keep going?

140 volts bulb dim no relay click

Up to 100 bulb glowing very dim

No i stopped at 80, try again and go further?

The meters moved around and pegged for a second 20 to 40 volts. I got up to 80 volts and still no bulb glowing??

And if the bulb goes bright, shut it down?

Ok 20 volts at a time. Relays click around 120v right?

Picos, rail fuses and bias transistors all good

Bias transistors measure right backplane 843 +on pin 1 -on pin 3 1259 +on pin 1 -on pin 2 698 +on pin 2 -on pin 3 701 -on pin 1 +on pin 2 1360 -on pin 1 +on pin 3 1803 -on pin 2 +on pin 3 Left backplane is around the same

I dont remember testing bias transistors on backplane, which test method?

We tested them before, test picos again?

I just tested the socket on dbt with a test plug, it only needed a handful of volts. I have connected variac to mains, dbt to variac and amp to dbt

Will have a cig and post pics. But first, there is some debris down the bottom of the chassis, use vac to suck it out?

Dbt plugs into variac then amp plugs into dbt socket?

I have questions, DBT, i use the switch to turn it on and off, but it is not a bypass switch to bypass the bulb. Active goes thru switch then thru bulb positive to negative then that goes to active on power socket. Negative and earth go straight to socket. Good?