Deluxe Reverb Reissue Replacement Transformer-Bias Issue

[earache]

Dude

Of course you're right, I rushed off the message and mixed my meanings. I have a meter with a bias probe measuring the bias setting and another hooked up to the test point measuring the voltage at TP5.
My question is, how do I reduce the voltage at TP5? I can get the 24mA bias reading but TP5 is 10 volts too high.

Thanks in advance!

[The Dude]

Yes. Basically, R69+R58 (bias pot)+R59 form a voltage divider for bias. Raising the value of R69 and/or lowering the value of R59 should do the trick.

[g1]

Out of curiousity, do you measure any AC voltage at TP5 ?

[Enzo]

TP 5 is a result of whatever voltage comes out the transformer, you don;t change it, you only recognize the effect it has on the rest of the circuit and adjust accordingly. I am not lobbying for any particular resistor in your bias circuit, use whatever works.

[earache]

Using a resistor decade box (which I rarely get a chance to employ), I found that an additional 660 ohms in series with R69 brought the voltage at TP5 to the -49 as noted on the schematic.

Thank you everybody for your advice, help and schematics!