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Main => Monitor/Video Forum => Topic started by: Sarver Systems on October 28, 2014, 10:34:27 pm

Title: WG K7400 voltage questions
Post by: Sarver Systems on October 28, 2014, 10:34:27 pm

I'm working on yet another WG chassis.

This time a K7401.

If my research is correct, I should be getting 117VDC, but I don't know where to pull the voltage from.

Title: Re: WG K7400 voltage questions
Post by: kardenm on October 30, 2014, 11:11:11 am

Should be a test point, TP202, v=117.

Do you have a schematic?

Title: Re: WG K7400 voltage questions
Post by: Sarver Systems on October 30, 2014, 11:23:54 am

Yes.

I was 90% sure it was TP202, but I wanted to verify.

Thank you!

Title: Re: WG K7400 voltage questions
Post by: kardenm on October 30, 2014, 12:42:07 pm

https://www.wellsgardner.com/pdf/voltage/K7400_K7500.pdf (https://www.wellsgardner.com/pdf/voltage/K7400_K7500.pdf)

https://www.wellsgardner.com/service/ (https://www.wellsgardner.com/service/)

Title: Re: WG K7400 voltage questions
Post by: Sarver Systems on October 30, 2014, 12:47:18 pm

I saw that TP203 is listed as a higher voltage, so I thought it might be for B+.

Speaking of those voltages, I do have another question.

It says at the bottom that some are in reference to chassis ground (black wire to the metal frame) while others are in reference to AC ground (black wire to green wire on AC input). But isn't the green wire attached to the chassis anyways? Hence, AC ground and chassis ground are now the same.

Confused!