How do I use "test points" on Pansonic board?

[mattpd]

I have noticed Panasonic boards have tons of test points, but I can't find anything in the service manual about what to test. Voltage? resistance? Most are on the back of the board so it would be hard to test with the board installed. Any tips?

[tom66]

Re: How do I use "test points" on Pansonic board?

You will see a plus and minus test point for Vsus. Set your meter to the highest setting above 200V, or volts DC if autoranging, and touch it across these test points. Exercise extreme care: there will be around 200V across here and that can kill you!

[mattpd]

Re: How do I use "test points" on Pansonic board?

But what about the other 100s of test points? Is the info on how to use them available anywhere?

[tom66]

Re: How do I use "test points" on Pansonic board?

They are for use in the factory only, generally. Sometimes they are marked on the schematic, but usually just used by bed of nails testers. Like this:
https://www.youtube.com/watch?v=dc7cmyDUYUc

[ryan74]

Re: How do I use "test points" on Pansonic board?

Sometimes the values will be next to the tp on the board. I just had one like that.

[mattpd]

Re: How do I use "test points" on Pansonic board?

Cool, I will look closer to see if I can find values.