6 Sep
1998
6 Sep
'98
3:10 a.m.
A customer dropped this dead 14" monitor in my lap
and got a new monitor.
This is not your normal "clone" design monitor. Three things; the
brand is Tobishi, this is 100% analog user controls but internally
has uprocessor to select modes that is number 2. Finally the
shocker is it is decoupled horizontal type. One driver for each;
one for flyback and one for horizontal yoke coil. Both trannys is
controlled by one area fair amount of circuitry.
That tranny for that yoke is blown that all, nothing else is cooked
thanks to good design of PSU protection. BU2520AF is the one, it
seemed to have failed from bad mounting with HS paste, fell off
after a gentle touch to it after the mounting screw is out. The
diode scubber is good.
Will check out caps but I suspect most are still good
Thanks.
Jason D.
email: jpero(a)cgocable.net
Pero, Jason D.