Ron.M
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Apr 4, 2010, 2:26 AM
Post #5 of 15
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Re: [badgereye] Phillips 50 inch crt coolant removal
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badgereye;.....
Let's start with this;=>....
"""Please post a model & chassis >>(Either a PTV??? OR DPTV) number<<<"""
NEED to verify that the Chassis (DPTV#) IS DPTV465 !!!!! ...
IF you think that the service manual is going to help you with instructions for
changeing the coolant , well , maybe !!!!... ....
There are NO pix in the manuals for you......
There are detailed steps for EXPERIENCED TECH's ONLY !!!!...
Which begs the question;=>...
"""How much electronic/TV repair background experience do you have ????"""
PLEASE give me an HONEST answer....THANKS....
I STRONGLY reccommend you remove each CRT from the set to change the coolant...
You WILL wind up doing a better & safer job with NO risk of accidental spillage...
The coolant is HIGHLY corrosive & TOXIC !!!...That means it's POISON....
Do ONE at a time...
I've modified one of your pix....
The RED circles are screws (There are 4 of them , two on the front & 2 on the back)
you do NOT want to mess with....
IF you do , you WILL have coolant running all over the place....
The green arrows are for screws that hold the lens assemblies....
They're 1/4 inch nutdriver screws...
There are 4 of them...
You'll need to take the lens assembly off to clean both of the lenses...
Use ONLY Windex type window cleaner & SOFT cotton
T-Shirts or CLEAN cotton diapers....
You can use Windex & the T-Shirts to clean the inside of the coolant
chambers & CRT faces also...
On those assemblies there is a fairly large wing nut....
Be SURE it is TIGHT BEFORE you remove the lens assembly....
Also note which direction the wing nut is faceing so when you put it
back on , you'll have it in the right direction in the event you need to adjust it....
To verify your coolant is bad , do the following;=>...
While you have the screen off the TV , turn it on...
Look directly first into the red CRT lens assembly at the face of the tube where the picture should be....
Kinda creep up on it as the pix WILL be bright & you need time for your eyes to adjust...
You should see a clear , sharp & focused picture....
Next , look into the green CRT lens assembly....
There you "may" see a bit of contamination in the coolant....
You should see a picture there , but probably not as good as the red....
Now look into the blue CRT lens assembly....
I'll bet that one is a mess....Cloudy & a lot of junk in there...
A LOT of contamination & the pix will be hard to make out....
IF that is the case , then what you need is a coolant change...
IF they are fairly clear pix on ALL 3 CRTs , then you may have a different problem....
This should get you started....If you need ANYTHING else , just post....
IF you so choose , I wish you & your family a Very Happy Easter....
Later...Ron.M.... ....
Veteran & Retired TV technician
(This post was edited by Ron.M on Apr 5, 2010, 9:59 PM)
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Well Tried to add images but it is not working I can email them you Please Help! 
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Re: [Ron.M] Phillips 50 inch crt coolant removal
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.... getting the pix up & running below.....
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