Newbie with questions

Hi All,

I'm updating a unit that was stock. Have changed out selenium rectifier, 50 MFD caps and changed resistors to trim bias properly. Next step is to replace Quad cap, no motivation other than I have the part, it came with a small schematic that shows a 2.2K resistor and other connections, no mention of the 6800 ohm resistor in existing circuit, I don't know what to do?

Tim

Hi Bob,
Thanks, not upgrading to the VTA driver board yet, still stock board, so, I'll follow your drawing.

Tim

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Ok, I understand now and I have the original manual and circuit diagrams.

Thanks

Hi,

Is there any benefit to replace the Quad cap if I'm not having any issues with the amp as is? I take it that the 80,40,30,20 cap can replace the original according the to original circuit diagram. Thanks in advance for advice.

Tim

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How do you know whether or not your amp is exhibiting issues related to the quad cap? E.g. if you had to re-center the bias divider to achieve proper bias this can indicate a failed segment in your quad cap. What do you hope to achieve by increasing the capacitive load on your rectifier and choke?

Keep in mind that basic capacitance ranges on a DVM measure at low voltage. A "good" cap at low voltage may measure otherwise at high voltage.