[TechAssist] RCA CTC169 proj. lense- is it algae or burn on CRT face?

  • From: Gary McCartney <gary@xxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Wed, 06 Apr 2005 11:56:07 -0400

I have a CTC169 projection in the shop that I replaced the HV splitter. 
Now I am cleaning the CRT lenses and I found the green one to have a 
smear look to it on the CRT face. The coolant does not seem to have 
bubbles or things floating around in it, but it looks like there is 
algae on the CRT face. Either that or the face is burned. I have 
included a link to a photo I took of the CRT so maybe someone will be 
able to tell.

http://www.number63.ca/crt-lense.jpg

I've only done a coolant job on one projection, that being an old 
Philips set, so I'm not real familar with the symptoms. I didn't notice 
any problem with the picture when looking into the lense before I 
removed it to clean. Is it worth ripping it apart to change the coolant, 
especially with RCA not providing new gaskets? Will I have to do it to 
all 3 CRT's to even up the brightness of the picture afterwards (red and 
blue don't have this problem but may look worse than a cleaned up green)?

I've already told customer $250.00 to change the splitter. I'm afraid 
he'll want to cancel the whole job if I tell him more money to change 
coolant. How much should a job like this be worth, with new HDTV 
projections, plasma, etc entering the scene?




Thanks for any replies.
-- 




Gary McCartney

McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca







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