CurtPalme.com Home Theater sales, calibration, service, and discussion forum. Hundreds of free manuals & setup tips.
   


 
Sign up and receive the latest newsletters by email!     Join the Forum discussions!    
    Site Map  
Home Products
For Sale
Referral
List
Photo
Gallery
Links Contact
Us
CRT Primer
Troubleshooting Tips
Mounting Methods
Definitive CRT
Projector Setup Guide
Tube/Raster Setup
Tube Condition (Wear)
Projector
Specifications
Projector Rankings
Video Processors
Ampro 1500/2000
Ampro 2300/2600
Ampro 3600/4600
Barco (Older Analog)
Barco 70x/Cine7  
Barco 500/800/801
Barco 808/Cine8
Barco 120x/Cine9
Dwin 500/700
Electrohome ECP 
Electrohome Marquee 
Mitsubishi
NEC PG
NEC XG
Panasonic 108x
Runco
Seleco
Sony 10xx
Sony 125x/127x
Sony 1292
Sony D50
Sony G70
Sony G90
Zenith 841/851
Zenith 895/900
Zenith 1200

NEC PG Tube Replacement

 (Page 5)

Back to Advanced Procedures Index

Page: 1 2 3 4 5
 

 



Step 17: It’s a good idea to check bleed the coolant chamber and put a small air bubble into the top of the tube. There are two screws at the top of each tube under a silicone blob as shown. Chip away at the silicone until the Philips screw is exposed. Take out the Philips screw. Take care that you don’t lose the screw if the tube coolant is under pressure, as can occur with older tubes that have absorbed moisture. The screw can shoot up 2-3 feet in extreme cases.


In this case, the screw shot up about an inch, and a ½ cc or so of coolant spilled onto the top of the tube.

Siphon out enough fluid to leave a small air bubble at the top of the tube. I use a syringe.


Take out too much fluid and you’ll leave a large air bubble which will reflect some light well below or above your projected image, so the below air bubble is too large.



The below air bubble or even slightly smaller is just about right.


Reinstall the Philips screw and reseal the screw with RTV silicone.

Install the new tube onto the tube frame. A new tube may not come with two strips of adhesive down each side of the tube neck. This can be done with surgical tape.

Reinstall the tube into the set, and align the magnetics.

Did you find this information useful? Please consider making a donation to help defray the cost of managing and hosting future articles, tips, and documents.     
Or purchase from Amazon.com and a small percentage automatically goes to support this site at no extra cost to you! Visit their Blu-ray and 4K UHD stores for sales. Want to show off your home theater? See our Blu-ray Release List & Must-Have Titles. Shop at Amazon.com and support our site!


... Previous Page

Back to Page 1


 

© Copyright CurtPalme.com. All Rights Reserved.