42pfl7432d

RAMSELECTRONICS

ATARI boy

Join Date: Jul 2015

Posts: 48

Country: USA
#1

42pfl7432d

07-13-2015, 10:16 AM

I have a TV with 42PFL7432D/37
I replaced BOTH inverter boards Master and Slave.
I replaced the power supply.

Issue is when it power on and backlight does turn on and 1 sec then off!.

Any idea?
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budm

Badcaps Legend

Join Date: Feb 2010

Posts: 40746

Country: USA
#2

07-13-2015, 10:21 AM

Re: 42pfl7432d

It may have bad lamps, bad lamp's connection, the BL-ON drops out, the PWM_DIM drops out, the 24VDC power supply drops out, etc.
You need to check the all those Voltages to see what disappears when the backlights drop out.

Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956

Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999

Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl

Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/

TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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RAMSELECTRONICS

ATARI boy

Join Date: Jul 2015

Posts: 48

Country: USA
#3

07-13-2015, 11:21 AM

Re: 42pfl7432d

Okay, will check it out.. thanks
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RAMSELECTRONICS

ATARI boy

Join Date: Jul 2015

Posts: 48

Country: USA
#4

10-05-2016, 08:13 PM

Re: 42pfl7432d

Forgot to leave message here.. I got replaced lamps and worked. thanks!

END OF LINE.
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