Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

[kodiac]

Re: Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

Bottom PWR Board IC's

U801 - EM8671A / QE10004
Q900 - BA0N10 / EFF2537
Q840 - B09P03 / CFG0133
U901 - QZ9904GN / CD7J0Y.3G
U601 - M102/315H
Q551 - 1AMVV
U803 - D102 216C
Q904 - 1AM

[kodiac]

Re: Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

Thank You

[kodiac]

Re: Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

I don't see R815

But R13 seems to be open
R13 goes to U801 pin 5 - looks like 360

[R_J]

Re: Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

I ment R812, It is between the fets source and ground
If the number on R813 is 360, it should read 36Ω. If it is open U801 will be shot.
Also check R821, in some cases it can go open if R812 opens
Here is the pdf of U801

[kodiac]

Re: Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

Thats R813.

[kodiac]

Re: Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

OK thanks.
I will check this out tomorrow.

[kodiac]

Re: Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

U801 - EM8671A
- Pin 6 ( Vcc ) is shorted to GND / Pin 4 in circuit

R813 - 360 ( 36 ) is open, connects to U801 pin 5

R821 - 201 ( 200 ) measures .820 Mohm, connects to U801 pin 3


I am not to familar with the U801 circuits.
Are there strict component tolerances for this circuit?

Can the R813 = 360 be replaced with a 470 or a 330 ?
Can the R821 = 201 be replaced with a 221 or a 271 ?

I have to find some replacement components, now.


I appreciate your help.
Thank You