Riddled TV Repair Forum

Rockstar · Joined: 26 Oct 2008 Posts: 43

Can someone explain how the tv coolant goes bad in phillips and magnavox Projection tvs? How long till it needs changing? Does it go bad faster not being used? I ask this cause i replaced coolant in my magnavox tv and used cotton balls and alcohol like i read and the green crt is worser then blue crt and it hasnt been a year yet and Its been in storage for about 4 months and it was fine before I put it in storage. So if someone can explain some of this Thanks.

Google

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

According to Philips, when Philips was actually Philips, The contaminate is an Algea that is growing in the fluid.. When you change the Fluid it is important to Clean/Kill all of the Algea with DENATURED alcohol before reassembly or the problem will come back fairly quickly. You will find that the scum does not come off completely that easily. DO NOT USE ANY OTHER CLEANER as there are rubbers and plastics that can be easily damaged. The problem affects only the green and the blue due to the light wavelengths. It never affects the red.

I have never compared time frames as to use or non-use, so I cannot answer that question.

Note: If you use rubbing alcohol you probably will not kill the algea completely as rubbing alcohol has oil in it. The fluid is a combination of ethelyne glycol (antifreeze) and glycryn. The glycryn is what makes the fluid slippery and removes the surface tension.

Hope this helps

Jesse

Rockstar · Joined: 26 Oct 2008 Posts: 43

Thanks for your reply Jesse. Is it safe to use Denature alcohol on the rubber seals on the crt chamber? Will Isopropyl Alcohol kill the algea and stuff or is denature the best to use?

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

Yes, Denatured is ok. Isopropyl alcohol IS rubbing alcohol. Denatured Alcohol is available at any paint store and is available in small quantities and is the only product recommended.

Jesse