19" TFT LCD computer monitor model:MG19VT

[sidneybek@yahoo.com]

19" TFT LCD computer monitor model:MG19VT,year:Jan 2006,UL
Listed:99F6,no power I found these electrolytic capactors bulged:

EC1,EC2,EC3,EC10,EC22,EC23,EC25=470 uf,16v

so I replaced them and still no power up,there is 12v entering the unit
from the detacheable power cord & on the CD driver board but 5v is
absent in most parts of the main board, the problem is around:

U9=9435A=30V P-Channel PowerTrench MOSFET
U10=AIC1578CS=High-Efficiency, Step-Down DC/DC Converter

does anyone have any schematics or common repair tips?.Thanks in
advance.

Sidney
E-mail:sidneybek(at)yahoo.com
Dartmouth,Nova Scotia
Canada

 

[Andy Cuffe]

19" TFT LCD computer monitor model:MG19VT,year:Jan 2006,UL
Listed:99F6,no power I found these electrolytic capactors bulged:

EC1,EC2,EC3,EC10,EC22,EC23,EC25=470 uf,16v

so I replaced them and still no power up,there is 12v entering the unit
from the detacheable power cord & on the CD driver board but 5v is
absent in most parts of the main board, the problem is around:

U9=9435A=30V P-Channel PowerTrench MOSFET
U10=AIC1578CS=High-Efficiency, Step-Down DC/DC Converter

does anyone have any schematics or common repair tips?.Thanks in
advance.

Sidney
E-mail:sidneybek(at)yahoo.com
Dartmouth,Nova Scotia
Canada

The first thing to look for are fuses. They are probably surface
mount and might not look like fuses.
Andy Cuffe

acuffe@gmail.com

 

[Franc Zabkar]

19" TFT LCD computer monitor model:MG19VT,year:Jan 2006,

Is this correct? If so, then why are you repairing a monitor that
should be covered by warranty? Just curious ...

UL
Listed:99F6,no power I found these electrolytic capactors bulged:

EC1,EC2,EC3,EC10,EC22,EC23,EC25=470 uf,16v

so I replaced them and still no power up,there is 12v entering the unit
from the detacheable power cord & on the CD driver board but 5v is
absent in most parts of the main board, the problem is around:

U9=9435A=30V P-Channel PowerTrench MOSFET
U10=AIC1578CS=High-Efficiency, Step-Down DC/DC Converter

does anyone have any schematics or common repair tips?.Thanks in
advance.

Sidney
E-mail:sidneybek(at)yahoo.com
Dartmouth,Nova Scotia
Canada

- Franc Zabkar