Riddled TV Repair Forum

kuhurdler · Joined: 28 Dec 2006 Posts: 2580 Location: Overland Park, KS

at the very least mark where they were before you rotate any of them by painting a line across them all.

When, I do this CRT procedure, I've never needed to recenter them. I just put them back in exactly where they were, and then do a minor tweaking with the convergence settings electronically.

The rings to adjust the centering each move the projection placement by rotating them one ring at a time. A full 360 revolution will move the image right back to the same place. I don't think I can describe how to adjust them in writing, I think you'll just have to play with it to see how each one impacts the image location.

I'm sorry I'm not more helpful.

Google

mariodab · Joined: 30 Jan 2011 Posts: 3 Location: US

Thanks for the reply. Using the electronic convergence did the trick. Everything is back to normal. You should really take that very last step out of the tut. That's what messed me up. The last step should say use the menu driven electronic convergence to readjust the picture. You shouldn't even mention the tabs. Other than that hiccup this was a great tut!

Seriously though man, take that last step out. Your basically telling people to do something you specifically told me not to do after I followed your tut to a T. Just saying.

kuhurdler · Joined: 28 Dec 2006 Posts: 2580 Location: Overland Park, KS

I'm no expert on this area. I've personally only done it twice now. But I published the instructions that a very experienced tv serviceman sent me. I trust him.

Perhaps on some models that step is necessary. Maybe, I can add a note or something though.

JTS1957 · Joined: 21 Jan 2009 Posts: 1385 Location: Far, Far Away

IF the convergence was "perfect" BEFORE you began coolant change and nothing was disturbed during the coolant change, theoretically, NO adjustment (mechanical or electronic) would be required.

In the real world = do mechanical first.

paulinacio · Joined: 10 Jan 2011 Posts: 2

i changed the fluid in the crt an now i'm having trouble getting it to center just right with the centering tabs..also when i try to focus in the blue i hear a popping sound in the crt wants i get to a certain point..what could be the problem?? the blue is way to fat, thats why im trying to focus it in more.. any help would be great, thanks

Google

alphanator · Joined: 12 Dec 2011 Posts: 1 Location: Mississippi

I have used baby oil in the two tvs I have done this with and haven't had any problems yet (been 2 years). The CRT coolant is just a form of glycol which is what baby oil and mineral oil is, and being CRT coolant is usually about 10 to 15 a bottle, its defiantly a cheaper route. Just make sure you get unscented and make sure its clear.