Re: Philips 42PFL7422D backlight troubles

Had some time to pull the slave to take a better look today and I came across a nice crack on the top of the ic.with little effort I had a nice chunk fall off and underneath was a burn mark.I believe ive found my culprit.I'm debating on buying new inverters or buying a rebuild and mod kit.if I were to rebuild the slave with the mod would that have any affect on the master since that won't have the mod kit?(yet..)

Re: Philips 42PFL7422D backlight troubles

yea that ic doesnt look like any fun to replace..im going to order the 2 inverters and call it good for now..i def cant complain about a $60 42" tv lol

Re: Philips 42PFL7422D backlight troubles

ok...the master checked out fine.

slave-
sq8-0.6ohm
sq9-8.4ohm
sq10-10.4ohm
sq11-10.1ohm
im hoping to find a slave that already has the mod..sounds like 40$ well spent to me lol

Re: Philips 42PFL7422D backlight troubles

thanks everyone for the replys and sorry for the late response..free time dont come around too often..

drpj23-both master and slave inverters are getting 24v

tibimakai-i measured the fet transistors and was unable to come up with a 8.5kohm reading on the master or the slave.is there any specific way i should test the fet transistors?i would like to rule out a human error possibility.

as stated before i havent had much free time to do research so heres rookie question #2..if i were to rebuild the...

Re: Philips 42PFL7422D backlight troubles

pics...

hey there!i was sent here by a friend who told me i could get some good help from this forum.ive been searching the threads for the answers to my problems and although you guys seem very knowledgable my questions are still unanswered.a couple months back i was given a 42" phillips model #42PFL7422D.chassis #Q523.1U LA i took it home and pluged it in.it powers up and the blue light is on in the front.the backlight never comes on and i can see images with a flashlight.i removed the back panel and inspected the caps,boards and connections.i came across a dark area on the main power board that...