Slightly damaged screen

[paulstef]

Found this PN43D440 Plasma screen. There is a little spider web on the screen, it looks like only the glass is cracked.

TV doesn't stay on. VS and VA start up ok then are turned off.

Is there a way to check if the screen is damaged taking measurements?

[freakaftr8]

Re: Slightly damaged screen

Well disconnect the y buffer boards and cables off the zsus to panel.. voltages will probably stay up. You cannot operate a TV with a damaged panel it will pull too much current in send power supply and to shut down, also you probably have damaged buffer boards from the electrodes being shorted

[paulstef]

Re: Slightly damaged screen

ok, is there a way to check for shorted electrodes? Where exactly do I measure?

[freakaftr8]

Re: Slightly damaged screen

ok, is there a way to check for shorted electrodes? Where exactly do I measure?

Can't check for shorted electrodes on a panel however you can test the buffer boards that connect to the panel from the Y sustain. Where the crack is that offending I see might be shorted and that would shut down and load down your power supply. If you disconnect the Y sustain buffer boards from the Y sustain board and disconnect the ribbon cables on the Z sustain connecting to the panel you can try to power up the TV and see if the power supply stays on of course you won't be able to really tell unless you monitor the vs voltage with a voltmeter in DC mode