P329 H.V. Trip pot

modessitt

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Anyone know the proper setting for this pot? This is the first K6100 HV cage I've worked on that has one, and I want to make sure it's set properly. The FAQ just mentions turning it until the spot killer goes off, but as this chassis smoked an LV2000, I'd rather make sure it's set properly after the rebuild before I test.

And I'm not exactly clear if turning it DOWN makes the light come on, or turning it UP makes the light come one...
 
It's more important to have the HV pot turned down as the worst that can happen if the HV shutoff pot is in the wrong place is either 1. Shut the monitor down even if the voltage is not too high or 2. Allow the monitor to run at too high of a voltage if something is wrong. I would set both in the middle and be ready to test the B+ right away go from there. If the red light comes on then shut it down, turn the over voltage pot back a little and see if it comes on. If i remember right, you should see a "snapshot" of the B+ before it shuts down so you will be able to tell what pot needs to be adjusted from there. Hope that makes sense.
Edit: I usually have the cardboard off the neckboard because I just resoldered it and there is a easy place to check the B+ on a solder point on the back of that neckboard if you look where it's coming from the HV cage.
If you see the B+ is 181vdc or close and the thing shuts down, then back off the hv over voltage pot. If the voltage is way too high and shuts off, back off the HV pot.
 
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It's more important to have the HV pot turned down as the worst that can happen if the HV shutoff pot is in the wrong place is either 1. Shut the monitor down even if the voltage is not too high or 2. Allow the monitor to run at too high of a voltage if something is wrong. I would set both in the middle and be ready to test the B+ right away go from there. If the red light comes on then shut it down, turn the over voltage pot back a little and see if it comes on. If i remember right, you should see a "snapshot" of the B+ before it shuts down so you will be able to tell what pot needs to be adjusted from there. Hope that makes sense.
Edit: I usually have the cardboard off the neckboard because I just resoldered it and there is a easy place to check the B+ on a solder point on the back of that neckboard if you look where it's coming from the HV cage.
If you see the B+ is 181vdc or close and the thing shuts down, then back off the hv over voltage pot. If the voltage is way too high and shuts off, back off the HV pot.

Yeah, I understand all that about the HV and B+. I've just never dealt with an HV Trip pot before. I'll set the B+ at 180 and then adjust the HV trip pot as needed...
 
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