Samsung PN59D8000 Nothing After Move to Basement

[deeMatrix]

Re: Samsung PN59D8000 Nothing After Move to Basement

With the set powered off and disconnected from the supply to be safe, you need to use a multimeter set to ohms to measure what the resistance is between Va and ground and also between Vs and ground.

Got ~5550 ohms resistance for VA and ~40000 ohms resistance for VS. Thoughts? Thanks

[dick_barton]

Re: Samsung PN59D8000 Nothing After Move to Basement

With the set powered off and disconnected from the supply to be safe, you need to use a multimeter set to ohms to measure what the resistance is between Va and ground and also between Vs and ground.

[deeMatrix]

Re: Samsung PN59D8000 Nothing After Move to Basement

Have you checked that there is no short circuit on any of the voltage lines.ie VA or VS to ground

Thanks dick_barton once again for your input. I only removed power connector from the Y-board and X-board one at a time and checked VA and VS voltages but no difference (not even briefly). I see the "Fast Track Troubleshooting Manual" indicates to "use ohm meter to measure resistance wile disconnecting Y-board and X-board supply feeds one at a time". Is this an additional step as unclear on what to do here? Thanks in advance.

[dick_barton]

Re: Samsung PN59D8000 Nothing After Move to Basement

Have you checked that there is no short circuit on any of the voltage lines.ie VA or VS to ground

[deeMatrix]

Re: Samsung PN59D8000 Nothing After Move to Basement

Any thoughts anyone? Would really appreciate it.
-deeMatrix

[deeMatrix]

Re: Samsung PN59D8000 Nothing After Move to Basement

Did VA / VS shoot up to their approximate values before collapsing just as quickly when you carried out the test given in the Fast Track Manual.

Thanks for your response. No VA and VS did not shoot up at all.

[dick_barton]

Re: Samsung PN59D8000 Nothing After Move to Basement

Did VA / VS shoot up to their approximate values before collapsing just as quickly when you carried out the test given in the Fast Track Manual.

[deeMatrix]

Hello Folks, thanks in advance for any guidance you may be able to provide.
Moved 59" Samsung plasma that was working flawlessly to basement to make way for new TV. Didn't turn on for several days but when did got nothing. Standby LED was on and did react to On signal but no sound or picture. Here's what we got when doing some minor readings:

Nothing of any concern noticeable on any boards or capacitors.

Standby ~5.3V
PS_ON ~3.3V
PowerON ~3.3V and goes down to ~.2V
VS_ON 0V up to 3.3V but then quickly goes back down to 0V

Green LED on logic board light blinks roughly once every 5 seconds (versus norm of once every second or so)

VS ~5.8V (panel sticker indicates should be ~217V)
VA ~.04V (panel sticker indicates should be ~55V)

Disconnecting power connector to Y and X boards no change in VA and VS

VSCAN test point on Y main voltage not present
Ve on X board (Vb in my boards case) ~4.6V

Looked at various threads, Samsung PDP Test Video and Samsung Fast Track Troubleshooting Manual but nothing definitive so not sure what to do next before just ordering and replacing parts. Thinking since this TV is nearly 10 years old perhaps others may have come across this issue and had an idea what is at fault. Any thoughts? Thanks once again in advance.

-deeMatrix