LG 50PK550 clicking - plasma newbie

[vinceroger69]

Re: LG 50PK550 clicking - plasma newbie

there are 3 fuses on the power supply one to the right of the ic and diode you have replaced do all these fuses still test good?

[jason424]

Re: LG 50PK550 clicking - plasma newbie

I just tested the 3 fuses again and they all Ohm out fine.

[vinceroger69]

Re: LG 50PK550 clicking - plasma newbie

ok thats good has the new capacitor come?

[jason424]

Re: LG 50PK550 clicking - plasma newbie

No, it's supposed to be here Thursday...guess the holiday has them backed up

[vinceroger69]

Re: LG 50PK550 clicking - plasma newbie

ive just looked at a few photos the new diode you fitted by the ic some of the solder looks bad not flowed onto pcb? maybe re do the soldering and hopefully when that capacitor comes it will fix the issue but if it dosnt maybe re check all the power supply voltages and tell us what they all read as we may have to start back from basic voltage tests etc.

[jason424]

Re: LG 50PK550 clicking - plasma newbie

Received the new capacitor (http://www.digikey.com/product-detai...583-ND/1647864) and installed. Still get nothing. No little board with the green light, nor clicking as it did previously.
I tested the pins at the location in the pic and all got 0.

[vinceroger69]

Re: LG 50PK550 clicking - plasma newbie

so not even standby voltage? start from the begining and check you have ac voltage going into the board

[jason424]

Re: LG 50PK550 clicking - plasma newbie

I'm assuming that the AC voltage coming from where the plug in is, via the brown and blue wires to the red connector on the board, is what I'm to be testing?

[vinceroger69]

Re: LG 50PK550 clicking - plasma newbie

yes test what ac voltage you have at that point

[jason424]

Re: LG 50PK550 clicking - plasma newbie

OK, I tested and one way I have 0.00 and when I switch the leads on the connector I get a varying .3 to .5

[vinceroger69]

Re: LG 50PK550 clicking - plasma newbie

sorry i meant test the ac voltage with the tv plugged in just to make sure you have ac power to the board i think your voltage is 120v ac in your country.

[jason424]

Re: LG 50PK550 clicking - plasma newbie

That is with it plugged in to an outlet.

[vinceroger69]

Re: LG 50PK550 clicking - plasma newbie

if thats the case the fuse in your power lead has blown

[jason424]

Re: LG 50PK550 clicking - plasma newbie

Is that under that silver box that is immediately below the black power cord plug in...where the brown/blue wires are coming out?

[vinceroger69]

Re: LG 50PK550 clicking - plasma newbie

your in a diffrent country too me but where you plug the cord from the tv in to the wall socket is there a fuse in the plug part?

[jason424]

Re: LG 50PK550 clicking - plasma newbie

There isn't a fuse in the cable at all. Where I plug the cable into the port on the TV it's contained in that silver box that is held by one screw (one seems to be missing) and I removed the screw and the underside of the box has a sticker that says Noise Filter on it.

[vinceroger69]

Re: LG 50PK550 clicking - plasma newbie

im not sure as usa is different to the uk so dont want to give you wrong advice but it seems to me you havnt got mains ac voltage to those wires on the pcb did you check across the brown and blue wires in ac mode? if so theres a break somewhere between your wall socket and that connector on the tv hopefully budm will see this thread and advise us more.

[budm]

Re: LG 50PK550 clicking - plasma newbie

Check the resistance between the LINE (HOT) prong of the AC male plug and the red connector with Brown wire, see what you get, then check the resistance between the Neutral prong of the AC plug and the red connector with the blue wire to see what you get.
That female end of the power cord does not look like it is inserted all the way in.

[jason424]

Re: LG 50PK550 clicking - plasma newbie

I plugged the tv in to the outlet and checked the voltage of the brown and blue wire via the pin slot in the red connector at the end of those wires.
The silver box with Noise Filter printed on it does not look like it easily comes apart to check for any disconnected wires/etc. But if need be I can try to get in there.

[vinceroger69]

Re: LG 50PK550 clicking - plasma newbie

cheers budm i was thinking of the easiest way to explaine things as mains voltage didnt want to advise wrong but your method is the easiest and safe too.