[TechAssist] Mag FP4625 PTV706 focus block??

Mag  FP4625  RTV706
I've seen lots of posting fly by about the NAP focus blocks--well  I finally 
have one (don't get many mags around here)that I suspect with that problem.  
Smeary, blurry pic, that cannot be adjusted in.  Is this the obvious $2 
question of the day?  Heres the next one.  I want to look at the tubes to see 
if they are cloudy and cannot figure out how to get the lenticular/fresnel off. 
 No screws, or clips that I can see, and it feels like it is close to breaking 
when I try to lift it up. You would think that it was an old mitsubishi with a 
"secret screw"  but I cannot find it if there is one.   Believe it or not--any 
help is appreciated--lol
Jeff Farnsworth
Lyles TV and Appliance
17 S Washington St
Elkhorn, Wi.  53121
ph    262-723-3477
fax   262-723-3658
tech@xxxxxxxxxxx

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