jaredjaric
Joined: 05 Jun 2007
Posts: 228
Location: Philippines
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| Posted: Sat Sep 19, 2020 5:58 pm Post subject: next projector issue cinemax chassis |
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with a lot of help from you guys and Curt, i was able to fix my 909 issues.
Thanks .
Here is another issue i have ,
this PJ was working fine and kept in storage for two years ,
it is a cinemax with unbalanced G2 voltage, i believe.
I suspected it as bad G2 Diag board,
But swapping G2 boards did not help,
swapping neckboards did isolate the situation.
It was at first on the red tube, after swapping the neck board of the red with the green neckboard,
the overbright raster moved to the green.
Is this a case of readjusting G2 like the older barcos?
Measuring on the test point M1, on the neck board, with a 6500K white screen, the red went blank and measured 0.88 volts;
Green measured 1.1 volts Dc( quite bright) , blue bright also at .85 dc.
There is a trim pot P1 on the neckboard , should i re adjust it?
Or it is very dangerous, without knowing the right procedure.
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