LG50pg3000 no picture just sound

[tom66]

Re: LG50pg3000 no picture just sound

I have not been able to test this, but I have a fair feeling that a buffer which has suffered due to a cracked screen can be walking wounded, and appear to work fine for some time before failing due to leaky/damaged buffer outputs. Each buffer IC output controls one line on the display, typically 90 per IC, operating with a voltage of Vsc (~195V) between floating ground and output, so they're very sensitive.

[capkid]

Re: LG50pg3000 no picture just sound

I have not been able to test this, but I have a fair feeling that a buffer which has suffered due to a cracked screen can be walking wounded, and appear to work fine for some time before failing due to leaky/damaged buffer outputs. Each buffer IC output controls one line on the display, typically 90 per IC, operating with a voltage of Vsc (~195V) between floating ground and output, so they're very sensitive.

That was my thought in less technical terms

[shaunbt123]

Re: LG50pg3000 no picture just sound

would like to thank tom66 and capkid for the advice,i think im gonna give up on this one,as i cant afford to throw more money at it,and dont want to risk buying secondhand buffer boards again.
cheers guys.
shaun.

[tom66]

Re: LG50pg3000 no picture just sound

would like to thank tom66 and capkid for the advice,i think im gonna give up on this one,as i cant afford to throw more money at it,and dont want to risk buying secondhand buffer boards again.
cheers guys.
shaun.

Where do you live in Nottingham(shire)? I'd buy it off you if you're gonna chuck it.

[shaunbt123]

Re: LG50pg3000 no picture just sound

Hi tom, im not going to throw it, was gonna put it on an auction site as spares or repairs,i need to try and at least get some money back for the parts ive put in.(or the wife will be after me !!)if you want to make me an offer for it, i can pm you with where i live ect.
thanks again for all the help.
shaun.

[tom66]

Re: LG50pg3000 no picture just sound

I sent you a PM.