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

Sony G70 (LC) Tube Swap

 (Page 10)

Back to Advanced Procedures Index

Page:
1 2 3 4 5 6 7 8 9 10
 

 



G70 C block PCB update to use P16LJE07/06 tubes

Okay, here is the optional last part of the job: A C block PCB update in case you want to use Panasonic P16LJE07 or P16LJE06 tubes instead of the original Sony provided P16LJE08 tubes.

It’s true that it can be easier (and cheaper) to find P16LJE07 or P16LJE06 tubes rather than ’08. With a small C-Block Sony PCB update, the G70 can use these new tubes with great success!

- First part of this update is to relocate the G1 pin connection on the PCB
- Second part is KH grid connection to ground to be done through 4.7Mohms 1/2W resistance

Thanks to Azzad, Terry and Mark for their help on this part.

1. After disconnecting all the relevant C block incoming cables, take the C block out of the G70 unit. Unscrew its heatsink top screw and gently slide up the back PCB shield/cover:



2. Locate the G1 pad and cut the incoming PCB track using a sharp cutter/blade. Do not damage the circular G1 PCB pad:


3. Using a small length insulated wire, connect it to both locations using solder:



4. Remove a 2x2mm area of copper varnish on the ground copper area track location using a sharp cutter/blade:



5. Solder two 10Mohms 1/4W resistors leads this way on ground track end. Clean the old G1/NC pads from solder (yellow arrows):



6. Bend the two 10Mohms 1/4W resistors other ends together around the old G1/NC socket pins:



7. Solder the two 10Mohms 1/4W resistor ends together around the old G1/NC socket pins:


Important : Clean the PCB surface from solder flux/resin since there is HV potentials applied to these pins!

It’s done, now the C block is compatible with P16LJE07 or P16LJE06 tubes!

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 DVD 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.