[TechAssist] Zenith PVY5265RK PTV 9-1690 Convergence Board
- From: "Damon" <damon101@xxxxxxxxxxxxxx>
- To: "TechAssist" <techassist@xxxxxxxxxxxxx>
- Date: Fri, 17 Sep 2004 07:19:05 -0500
Hello,
I've been workin on getting the convergence circuits to operate, the cross
hairs don't move, I can access the convergence alignments, but changing
their values don't do anything.....both the 9-1690 and the 9-1674 have been
sent to the rebuilders....but still no convergence, so only 1 more thing to
check, and that's the digital data lines on connector 83C.....that's why I
need you folks to help. ANYBODY PRESENTLY WORKING ON A ZENITH PTV WITH A
9-1690 CONVERGENCE MODULE, would you please verify with a scope what you
see, please????
This is what I see:
83C pin 1 (black wire) 5Volts with a very tiny negative-going pulse (about
0.2v max)
pin2 Data, good 5v pp
pin3 5V
pin4 Data (or clock) good 5v pp
I think pin 1 is not right, but I can't verify since Zenith techs are on
Hurricane leave, any help would be deeply appreciated.
Thanks
Damon Brunger
Telrad Electronic Services
Ft Wayne, IN 46815
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