Flyback Problem In Dell
E550 Monitor Solved
No power was the
complaint of this monitor. Upon checking found only horizontal
output transistor became short circuit. The part number is C5552
and since I do not have this part I substitute it with C5587. When
I power on the monitor I heard arcing sound and from close
inspection I saw a blue light coming out from the crt socket. I
suspect that the focus voltage have increased and arc to the
surrounding ground. Using my faithful Kaise high voltage probe to
check on the focus voltage-the voltage has increased to more than
10 Kv. This problem is mainly due to the defective part in the
voltage divider unit. A working unit focus voltage should be around
5-7 Kv. Since I do not have this flyback (the part number is
19.70060) what I do is I pulled out the focus wire and cover the
hole with super glue and taped the G2 screen cable. Then I
installed a new monitor blur buster and connect the focus and G2
cable to its original place which is the crt board. Voila! the unit
worked perfectly fine! I let it run for more than 8 hours without
any arcing sound from the monitor and I will let it burn in again
for few more days. Sometimes in our repair field we got to think
like Mac Gyver (modification) otherwise many units would not be
able to repair due to unavailability of spare parts. One more
thing, nowadays it is hard to get original electronic parts from
our local electronic distributors and this make our live a little
bit tough when comes to repair any equipment that is quite new in
the market.

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