Riddled TV Repair Forum

vcand · Joined: 07 Nov 2009 Posts: 5 Location: Orlando, FL

RCA 52"
Model: D52W20
Chasis: ITC222
Manf. Date: Nov. 2003

This is going to be a little bit lengthy of a description.

My TV problem started about a month or so ago with a blue MOVING haze (it kind of looked like a lava lamp in slow motion). It almost looked like a convergence problem, but the alignment was fine.

Just recently, within the last week, the colors started going weird. It seems like after a little while of working, the red disappears and there's no rhyme or reason to it. When I turn on the TV all the colors are there (plus the blue haze). After awhile (especially with darker shows) the red will disappear. I will then switch back to a bright show, then all the colors are there. Then sometimes, there's just no red at all and it stays that way for hours, BUT, I notice these red lines that move at an interval (maybe every 5-10 seconds a line will move).

I opened the front to look at the lens, and I've attached the pics of what I found. All three lenses have some black spots in them, upon closer inspection it looks like there is possibly some bug bodies and debris in the concaved lens part (evident by the few legs I can see in the lens). But what I really notices is when I looked into the blue lens, I see what looks to be condensation (possibly leaking fluid?).

I read in the walk-through for replacing the fluid that if it gets on the board it could create some problems. Is it possible that maybe the blue seal is bad and it's leaking onto the board, thereby causing the inconsistent red problems? And of course I guess it's safe to say the blue haze is from the "fluid" distorting with blue image.

I have not yet accessed the boards (a lot of plastic covers that I need to figure out how to remove), so I cannot report if there is any visible damage or blown caps.

1: This is a view of the black objects from the mirror.

2: This is what it looks like looking into the lenses themselves

3: This is the condensation I see in the blue lens

4: These are the red lines when the screen is on a black channel/input

5: This is an image when red is working, you can see the blue haze.

6: This is another picture of the blue haze

Any help would be appreciated. Thanks!

Google

kuhurdler · Joined: 28 Dec 2006 Posts: 2879 Location: Overland Park, KS

you're first suggestion about a leak in the blue CRT is the one I would be most worried about. The only way you can tell is to open it up and look.

That picture with the red looks like retrace lines from the red screen voltage being too high. If it is flickering back and forth, check if the red screen voltage is also jumping at the same time.

I personally have no firsthand knowledge of this model, so hopefully someone else can chime in with some experienced wisdom.

vcand · Joined: 07 Nov 2009 Posts: 5 Location: Orlando, FL

I'm trying to find the seal I am going to need for the blue, and I found this:

http://www.matelectronics.com/acatalog/Mat_Electronics_Replacement_Parts___TV_134.html

The, "NAP CRT SEAL KIT", is that a "one size fits all" part that would work for me, or does it vary from tv to tv?

kuhurdler · Joined: 28 Dec 2006 Posts: 2879 Location: Overland Park, KS

I'd like to chime in and voice my displeasure of my shopping experience with mat electronics.

If they were the last vendor on Earth that sold the parts I needed, I would prefer to throw my TV away.

I'd strongly recommend shopping elsewhere.

vcand · Joined: 07 Nov 2009 Posts: 5 Location: Orlando, FL

Google

Jesse Mack · Joined: 22 May 2008 Posts: 600 Location: The Last Frontier

case in point: The part number given for the seal from MAT electronics is 4835-2098-7001 This is a Magnavox/Philips part number for an integrated circuit. Not a CRT seal.

There are no seals or parts available for the CRT's to my knowledge for this set. The red cutting out sounds like a seperate issue.

Hope this helps

Jesse

abcoffey · Joined: 20 Jan 2010 Posts: 13 Location: Updstate NY

I replaced my coolant recently on the Blue...noticed the same clouds you see,and with close exam thru top of tube I noticed that it was not completely filled to the top,thus a bubble was distorting the pic. Make sure when you replace the coolant that you fill it completely.