Re: Samaung 43" Plasma PN43D450A2D will not power on

I did some basic tests on the X-main and Y boards by simply unplugging them from the power supply and turning the TV on and watching the behaviour. The X-main appeared to be casing the failure mode. Bought a replacement X-main board from ShopJimmy.com and installed and upgraded the firmware - all appears good!

although the part supplier and this blog mention that upgrading the firmware can help prevent re-occurance of the failure. Samsung said the firmware upgrades only affect viewing optimization and NOT upgrading...

Re: Samaung 43" Plasma PN43D450A2D will not power on

So I powered up the TV again to monitor the logic board and during the initial start-up with the red Standby light and "clicking occurring, the green light on the logic board is blinking, but when the clicking stops, the green light goes out. It seemed like the green light alternated with short blinks and longer ones, but this only lasted for about 10 seconds. This TV was built in Feb 2011. I am afraid the guides may exceed my understanding of TV vocabulary.It sounded as though I need to add some jumper wires across...

Re: Samaung 43" Plasma PN43D450A2D will not power on

Great - I'll run these tests later today and post my findings. Thanks for the support.

Re: Samaung 43" Plasma PN43D450A2D will not power on

awesome, thanks for the responses and guidance! new area for me, so trying to learn and save some money!

Re: Samaung 43" Plasma PN43D450A2D will not power on

So I should disconnect X & Y boards and repeat the test and if the readings for Vs and Va reach close to the expected results of 207 and 58 and then drop off? then that will mean it is one or both of the X & Y boards?

I have a Samsung 43" Plasma TV PN43D450A2d that this past weekend suddenly will no longer power on. It has always been plugged into a surge protector.

Currently when I plug the TV in, the red standby light will blink several times and there are a few clicks as if the TV is attempting to start up but fails and then re-attempts. After several of these cycles, the standby light stays lit and the TV is not responsive to the remote or manually pressing the buttons on the set. No sound is heard or video is available. I have to unplug and re-plug the TV to for it to re-attempt start-up....

Re: New Members - please post your introductions here

new member, trying to troubleshoot a Samsung tv, Hopefully post a new thread soon.