sanyo no back ligth

[budm]

Re: sanyo no back ligth

OK, so now you do get the LED to be on, but still no backlights?

[MisterD]

Re: sanyo no back ligth

Bud, he has 3.7V at BL_ON with the 1K resistor in place and he has the wire cut now.

[ealequi]

Re: sanyo no back ligth

yes

[MisterD]

Re: sanyo no back ligth

3.7v

Okay, did you cut the BL_ON Wire on CN6 ?

[ealequi]

Re: sanyo no back ligth

3.7v

[budm]

Re: sanyo no back ligth

You will put the cn6 connector back in place, but cut the BL_ON wire, leave it long enough so you van splice the wire back together once we fix the problem, that is how I troubleshoot misterd philips TV.

[MisterD]

Re: sanyo no back ligth

With the TV turned on check the voltage now at BL_ON on connector CN6 and see what it is.

[ealequi]

Re: sanyo no back ligth

same thing. Get audio,video but not lit-up

[MisterD]

Re: sanyo no back ligth

Here it is again
He is saying plug connector CN6 back in and to just cut the one BL_ON wire into that's on CN6, leave it at least 3 inches long at the end going to that connector (CN6) so you will be able to splice it back together later, Leave the resistor where it is and turn on the TV and see if you now have backlights.

[MisterD]

Re: sanyo no back ligth

what about the wire that he want fromstb5v on cn2 to stb5v oncn6?

You already have this done.... connect the resistor between PIN1 (5vstby) and pin3 (BL_ON) of CN6. So leave the resistor in place. Now just cut the one wire into like I said above, this way it is no longer connected to the mainboard, then follow the steps I said by turning on the TV and see if you have backlights.

I don't think you have to do anything with CN2, he's just saying you have 2 different 5VSTBY Sources.

[ealequi]

Re: sanyo no back ligth

what about the wire that he want fromstb5v on cn2 to stb5v oncn6?

[MisterD]

Re: sanyo no back ligth

He is saying plug connector CN6 back in and to just cut the one BL_ON wire into that's on CN6, leave it at least 3 inches long at the end going to that connector (CN6) so you will be able to splice it back together later, Leave the resistor where it is and turn on the TV and see if you now have backlights.

[ealequi]

Re: sanyo no back ligth

That means must be using output signal from one of the pin on CN6, what you can do is to put CN6 back in, but cut the BL_ON WIRE, leave the wire long enough so you can splice it back together. I will look at the diagram to see what is going on.
OK, it also uses pin 1 of CN6 for supplying the 5VSTBY to board beside 5vstby on CN2.

when you said wire, are you refering to the resistor i put on?

[ealequi]

Re: sanyo no back ligth

I agree with selldoor that looks like solder to me and not dust, it appears that someone may have been soldering something and some of the hot solder dripped there, I recommend examining the bottom of this board very close and with the power off and TV Unpugged, brush off anything that looks like that.

i already did.

[ealequi]

Re: sanyo no back ligth

the reading on r322 is 3ohm

[MisterD]

Re: sanyo no back ligth

Pic is very good one of the best I have seen for some time.
If you pan along the white line in the middle to the hole
Just below the hole there are 3 resistors and next to them
C902 Just below that there is an odd bit of solder?
May not be doing any harm but can you check it out.

I agree with selldoor that looks like solder to me and not dust, it appears that someone may have been soldering something and some of the hot solder dripped there, I recommend examining the bottom of this board very close and with the power off and TV Unpugged, brush off anything that looks like that.

[tom66]

Re: sanyo no back ligth

Just don't cut it right close to the pin or you won't be able to reconnect it easily.

[budm]

Re: sanyo no back ligth

That means must be using output signal from one of the pin on CN6, what you can do is to put CN6 back in, but cut the BL_ON WIRE, leave the wire long enough so you can splice it back together. I will look at the diagram to see what is going on.
OK, it also uses pin 1 of CN6 for supplying the 5VSTBY to board beside 5vstby on CN2.

[ealequi]

Re: sanyo no back ligth

one more thing, if i don't plug cn6 i get nothing. when it is plug i get the green ligth in from, video and sound, withou cn6 it wont even turn on.

[ealequi]

Re: sanyo no back ligth

ok i will check it now