Hi all I need is the setting for all 3 CRT's focus range and voltage coming from the focus block to all CRTS. I have a schematic for phillips 50p8341 it shows focus range on all 3 is 8kv to 10kv. and voltage is R 240v, B 310V and G 328V any help you can give.
thanks
Chief
SOURCE: how to replace the crt on a phillips rear projection tv
No trick... It's a difficult task for most techs. On a scale between 1 - 10 and 10 being the most difficult you have a 10.5 there and the fun is just beginning..
SOURCE: bad color blue green bad pic tried adj covergence no luck
The problem is either poor solder connections on the convergence ICs ore defective ICs. If you can solder, you can fix this yourself. Be aware however, of dangerous high voltages that are present even with the set unplugged. The ICs are STK392-120s and should be attached to a large heatsink. Try resoldering the pins first. If that fails to resolve the problem, replace the ICs.
Dan
SOURCE: I am having a hard
This is a very common failure on Projection TV sets.
Screen looks 3D
Colors don't line up
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed or warped.
You can see some example photos and find a solution here...
http://www.fixya.com/support/r2861627-updated_convergence_problems_amp
SOURCE: Well i made the mistake of changing out my coolant
Coolant is highly corrosive and will destroy any component that it touches. So the components will need to be desoldered and removed then tested and reinstalled. Also turning the screen adjustments too low will prevent the CRTs from turning on.
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