lg 50ps3000 screen dead but gets audio

[graybe]

please can someone give me an idea on how to fix my lg 50ps3000.
it turns on and you get audio but the screen stays blank. ihave replaced the y sus board but  no difference still screen is dead.

[Baileybum1234]

I dont have the answer mate, but do you hear clicks on/off on/off from the relays?  Im just having simular problems with the LG 50PQ6000 possibly simular boards??

[rap1d61]

Try taking out the upper buffer board....... This should light up the lower section.
If this does not work replace & take out the lower buffer.
This should light up the top section of the screen.
***Remember the board has to be removed so as no contacts can be made.***

[tv tony]

Why do you suspect the y-sus so early in your diagnosis, is the psu supplying vs and va supplies, or have you been watching youtube videos?

[clark97]

Check q13 14 and 15 on Z sus for s/c theres a kit available from ohmsupplies if they are short.

[clark97]

Just had one in with same fault, this time it was t-con which is quite common on these.

[clark97]

Failing that check your y-buffers.

[rap1d61]

In answer to TV TONY......... Because i've had 3 in with the same fault... UPPER BUFFER BOARD.

[marky mark]

I thought Tony the TV was the LG expert?  The PG would be more buffers, the PS more x-sus, I've had a look on a forum I get access to & they both seem common sets, I think its the same Tony gets his info from. 

[tv tony]

ive worked for lg for 10 years, sony for 25 and had a total of 40 years in the trade, im hanging up my cap in 5 years, im off, see you all in the pub