I think I figured out my K7000 woes...

jay

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So I was finally able to test voltages. Reg 170v, B+ 170v, HOT ZERO. I took a look at Randy Fromm's flow chart (thanks Cliffo for the link). I kept coming to "You have Horizontal Deflection Failure". I replaced the HOT and was trying to think about what I did when I did it. I then remembered a little clear thin plastic piece on the table after I was cleaning up my mess.

I THEN remembered a thread on here about having MICA INSULATORS behind the HOT and reg.

SHIIIIIIIIIT!!! Yeah, I threw it away.

My question now is: Is the HOT considered "done" at this point? Should I go ahead and order a new one? How to test it?

Can I use something else behind the HOT for the short term just to see if this damn thing will fire?

Sorry to beat this dead ass horse, but I think I'm getting closer to a solution.

Or maybe, I'm way off...
 
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Ayup. If the mica insulator is gone, then you probably lost the HOT. Put your meter on diode test and check it with the black lead on the center leg and the red lead on either of the outer legs. A zero or short reading means it's bad. A reading between .400-.700 is okay. You'll get a low reading (about .086) between the outer legs, and that's normal.

If it's shorted, then replace it. if you have to order one, they normally come with a new mica insulator, but ask when you order. If you have a new one handy but no insulator, you can get a piece of thin clear plastic and poke a hole in it for the screw, then cut it to fit. Just make sure no part of the transistor or legs touches the metal frame.

It's possible that if you have another issue with the chassis that keeps it in HV shutdown, that no power has gotten to the HOT and it might not have blown...
 
Is this a 19" or 25"? standard or medium-res?

You could always pay one of us monitor techs to fix it for you...
 
25" (Hard Drivin)

I'm almost at the point of sending it off. I just want the satisfaction of doing it myself. I keep finding things that I have messed up (please see my C36 replacement thread). Got through that and I'm just looking for little things now.

The HOT obviously hasn't seen power. I was thinking the reg was shot since thats the only thing I haven't replaced, but that's not the case. I did check those 4 diodes that BR mentions and they show .465. I thought I read somewhere they were suppose to be .565 or something like that.
 
I lied....just went and checked the diodes.

D19 .509
D20 .492
D21 .492
D22 .509

I will try and find something to insulate it and try again.
 
Insulated it, same result, HOT ain't got no powa!!

Bad solder joint???
 
How's your fuse? Have you tried the light bulb thing yet to test your chassis power supply?
 
Fuse is good. Even tried others just to be sure.
 
Yup hot is good pulled it again just to make sure. No blown fuses. The only life I get is B+ 171v and the reg 171v hot is 0.
 
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