LG 50PS3000 Blue Light No Display

[Easky15]

Re: LG 50PS3000 Blue Light No Display

Done mate, removed both those components from the circut and tested, im gettin beeping on all pins, ;-)

[ReeceyBurger123]

Re: LG 50PS3000 Blue Light No Display

Yess that means that those transistors are shorted nice one, normally its just the transistors that fail in my experience they never normally cause anything else to blow. What is the part number on them ?

[Easky15]

Re: LG 50PS3000 Blue Light No Display

W20NK50Z

Heres a pic of them

https://drive.google.com/file/d/0BwN...ew?usp=sharing

[ReeceyBurger123]

Re: LG 50PS3000 Blue Light No Display

Be sure that you replace both of them for best reliability, here is a link to the parts:

http://www.ebay.co.uk/itm/2PCS-Trans...B3mNAkhyfQx3PA

[ReeceyBurger123]

Re: LG 50PS3000 Blue Light No Display

Also make sure you add a small blob of silicon thermal paste the the back of the transistor and if the thermal pad gets remove you will need to replace that as you do not want that transistor shorting to the heatsink.

[tom66]

Re: LG 50PS3000 Blue Light No Display

If it has a direct drive circuit you should replace the driver IC.
If it is transformer coupled you should be ok.