Z42pt320

[abdekader]

i have LG Z42PT320 the Y-sus problem ( EAX62080701)



the problem is Y-sus

Instead of 15v volts comes 17v, come white screen and then explodes transistors in Y-sus and Z-sus because 17v

how i can fix this problem to be output normal 15v , i want your help my friends

[abdekader]

Re: Z42pt320

if you have schematic

[tom66]

Re: Z42pt320

The 17V probably isn't an issue. Where are you measuring it? More likely, the fault is with the driver IC for the transistors.

There are no schematics for LG plasma panel sustain boards, etc.

[abdekader]

Re: Z42pt320

thank you tom , which driver IC for the transistors? and which 15v IC? what's the name IC???

[tom66]

Re: Z42pt320

IC is connected to the gate usually through resistors.
I don't know anything more, I have no more info than you.

[abdekader]

Re: Z42pt320

thank you tom

[Kenguru21]

Re: Z42pt320

Are you fix it.
I have same problem. Instead of 15v volts comes 18v on ysus board.

[naseck]

Re: Z42pt320

hi,,,i need to know what no for Q713 and Q703...thanks

[Robinsosa]

Re: Z42pt320

Did you measure the 15V with reference to Floating Ground(FG)?
15V is measured with reference to Floating Ground not Ground