My PL400 Series 1 Rebuild

[Hexis22]

Or for an overkill scenario, do both copper plate and wire RCA ground termination.

 

[Gepetto]

So, 2L and 2R thereby get tied together, correct?

Yes, BUT ONLY AT THAT RCA JACK INPUT POINT. It shunts any possible external ground loops by virtue of that.

 

[jle]

I am getting close to the wiring for the WOPL-400 being ready for the 1st set of "Bring Up" tests for the first row of transistors.

QUESTION: I have been wiring in the Watts Abundant DC Protection ("DCP") board along with the backplane boards. Can the testing be done with the DCP in place?

 

[George S.]

Yes. As you bring up the line voltage with the Variac, the click of the DCP relay is a indication that all is well.
I can't remember the exact VAC that the DCP relay energizes at, maybe 80 VAC.
If you bring line voltage up to 115-120, and no click, that's a indication of a problem.
The DCP relay click is a good indication, along with the DBT and test meters, that all is going as planned.
No click, you've got a problem.

 

[Gepetto]

Hi Jon
You should probably post a collage of your build photos here so that the eagle eyes on this forum can point out anything that needs fixing before powering up.