CMS1561LR   
CTX
CMS1561LR               
Chuntex Electronic Co Ltd
FCC ID# DBL

POWER SUPPLY            
DEAD

2SK955 chopper output FET was shorted
The small board with the SG3842 current mode ctrl reg.
has very bad connections on pins to main board

Remove this board and resolder pins 
that connect this small board to the mother board
BOTH ENDS
It is believed that this bad connection is the reason 
so may of this model monitor have shorted the chopper output

THEIR IS AN 18V ZENER DIODE IN THE GATE CIRCUIT TO GROUND
IT PROTECTS THE REG BOARD IN CASE OF A CHOPPER 
OUTPUT SHORT CIRCUIT IT ALSO SHORTS
THEIR IS AN 18V ZENER DIODE IN THE GATE CIRCUIT TO GROUND
IT PROTECTS THE REG BOARD IN CASE OF A FET SHORT CIRCUIT
but IT ALSO SHORTS in the process.
==========================================================

