RCA D52W14 rear projection blue blotches, streaks & halo in picture

[nitrogen_widget]

I picked up an RCA D52W14 for free.
It was dead. Just a blinking power light when you turned it on.
Did some research & found a few buldging capacitors on the power board & replaced those.

Now it powers up just fine.

But when there is random blue blothes & streaks in the picture.
Also I can see a blue halo & whites sometimes cause ghosts.

Otherwise the picture is decent.

Any ideas?

Thank you.

[Turnip]

Hi Widget,

Is the set tubed ?

Chris.

[nitrogen_widget]

yes.
Here are some pics of the problem.
I've been told the blue focus is off but not sure how to adjust it.

[nitrogen_widget]

Ok. got into the test menu & pulled up the convergence grids & the blue is WAY out of whack.
No focus at all.
Barely hitting the screen and that is just a blur.
Grid is focused on mirror but warped & I see "stuff" on the blue tube.

I'm thinking the coolant needs replacing?

[Turnip]

Hi,

No expert myself, but suspect all coolants might be in the same condition - expect some expert to put us to rights - well with Quuq there's always some expert about.

Not on commission, sadly  - Chris.