Pilot 240 int amp adjustment help please

[ferninando]

Have a Pilot 240 integrated amp, 6BQ5 PP, with DC balance adjustments each channel. Have no idea how to make those adjustments, where to measure etc.
Have sams but it does not show DC balance pots so is a different serial # series.
Does anyone have this amp and know how to do these adjustments?
Would really appreciate any help.

Thanks.

 

[Patrice B]

Quote from a saved post on my computer:

"The easiest way to adjust it is to put a DC voltmeter on each of the cathodes (in the same channel), one probe to one tube, one to the other tube, polarity is irrelevant. Adjust for zero volts on the meter. No signal should be applied to the amp during the adjustment. Repeat for the other channel."

It was for an Harman Kardon A500 but I would guess this procedure should work on any amp with DC balance pots.

Patrice

 

[ferninando]

Ill give it a try.

Doesn't work.

 

[Kegger]

DC balance is "generally" the current adjustment in an pair of output tubes.

So if you have a cathode resistor on each tube you should be able to read
the voltage drop across each resistor and balance them/make um the same.

 

[ferninando]

Thanks. I will give that a try.