Lightening in yard..what’s the chances it’s just a power board?

[BuggyMasters]

Lightening struck my back yard and blasted pretty much every electronic device I have including my two Samsung plasmas. I happen to like those tv's. Anyone one have any experience with big power surges? I am wondering if it is worth replacing the power boards or is there a really good chance it took everything out past the power supplies as well. In both cases, there is no stand by light. Neither tv will do anything at all. I pulled the rear panels and the fuses are good.

Thoughts?

[tvtimmy]

Re: Lightening in yard..what's the chances it's just a power board?

Check the breaker for the outlet it's plugged into.

[BuggyMasters]

Re: Lightening in yard..what's the chances it's just a power board?

Thx I should have clarified that I’ve already done that. The outlet has power.

[tvtimmy]

Re: Lightening in yard..what's the chances it's just a power board?

Lightning loves to kill mainboards. You will have to test the power supply to see if you have 5v standby voltage first. If so I would then try running the test patterns.
Pictures and model numbers are a help too.

[BuggyMasters]

Re: Lightening in yard..what's the chances it's just a power board?

Ok I’ll get pics. The model is PN60E550D1FXZA. It actually took out a 3rd TV too a Sharpe 60” but that one I can hold the volume down and input buttons and it comes on (with the K of course) but it’s usable. I tried a Fact Init with it in service mode but it says ERR and then the whole screen turns red. I already replaced both of the plasma Samsung’s but would love to get my 60” plasma working and replace the injured Sharp with it.

[BuggyMasters]

Re: Lightening in yard..what's the chances it's just a power board?

I do have stand by power of 5.2 volts. Main board?

[tvtimmy]

Re: Lightening in yard..what's the chances it's just a power board?

Unplug the tv. Unplug the ribbon from the mainboard. Put a piece of wire in holes 3 and 4 on logic board. Plug the tv back in and see if you have test patterns on the screen. If you do, the mainboard is bad.

[BuggyMasters]

Re: Lightening in yard..what's the chances it's just a power board?

Disconnected ribbon. Jumped 3 and 4 on the logic board and plugged it back in. Still nothing. When I plugged it back in should I have expected to hear a click or something of it trying to turn on? Made no noise and screen stayed off with nothing displayed.

[tvtimmy]

Re: Lightening in yard..what's the chances it's just a power board?

Now unfortunately you have to find the fault. Try unplugging the x and y mainboards and try turning it on.

[BuggyMasters]

Re: Lightening in yard..what's the chances it's just a power board?

Should I plug the ribbon back in before disconnecting other parts?

[tvtimmy]

Re: Lightening in yard..what's the chances it's just a power board?

Yes. Pull wire from logic board too.

[BuggyMasters]

Re: Lightening in yard..what's the chances it's just a power board?

Tried a bunch of different combinations of things plugged in and not plugged in and nothing generated anything at all. Deader than a door nail.

[BuggyMasters]

Re: Lightening in yard..what's the chances it's just a power board?

I think your initial test would work however I need a way to tell the tv to turn on since that is controlled by the main board which I feel is bad. I believe I can provide a power on simulation to the power supply just need to find out which pins to jump.

[BuggyMasters]

Re: Lightening in yard..what's the chances it's just a power board?

Got your test to work! On these plasmas, the “turn on” feature is accomplished by taking the PS-ON voltage down to 0 volts from is “normal” voltage of about 3.6 (I.e. 0 volts makes the TV come on). I jumped pin 1 of the power connector for the main board to pin 5 which is ground. Put your jumper in place on 3-4 of the logic board, plugged it in, and lo-and-behold, the tv turned on and began the test sequences on the screen. Looks like bad main board it is.

[tvtimmy]

Re: Lightening in yard..what's the chances it's just a power board?

I forgot about the PS ON jumper. For just under $80 you can get an unused mainboard from ebay.

[BuggyMasters]

Re: Lightening in yard..what's the chances it's just a power board?

Got a board coming. My 43” plasma had the same issue. Boards for it are real cheap so I got one for it too. These new tvs just can’t compete with the picture quality on a plasma. I’ll post back here after I get my new boards and they are confirmed working.

[BuggyMasters]

Re: Lightening in yard..what's the chances it's just a power board?

Board came for the 43” unit today. Started right up! Should have the board for my 60” on Thursday. Will report back.

[tvtimmy]

Re: Lightening in yard..what's the chances it's just a power board?

Was it a Samsung?

[BuggyMasters]

Re: Lightening in yard..what's the chances it's just a power board?

Yes, both Samsung plasmas.

[BuggyMasters]

Re: Lightening in yard..what's the chances it's just a power board?

Good gosh. So I got the board for my 60” smart tv. Put it in and it powered on. There was a message in the top left of the screen that disappeared before I could read it. I’m thinking it was something about resolution. Then it went to the screen where it said no source which is expected because I didn’t have anything hooked up to it yet. So, I unplugged it and went and grabbed my satellite box. Hooked it up and turned it on and had no screen. I ran through a few things and then came to realize that he sent me a board from a 6500 series TV! I went back to the auction and confirmed that what was pictured in his ad was the correct board and he did in fact send me a different board. So now when I do the jumper test from above I no longer get the test patterns. I am hoping the wrong board simply sent a reprogramming signal to whatever tells the screen to display and when I get the correct board it will program it back. Really p1sses me off! It did work on first power up and it just didn’t work after I power cycled it. What are my chances that my theory will be correct vs that 6500 series wiping something out? The sound works fine. My tv is a 550 series. In specs the difference looks to be that my tv is 1080p vertical. The 6500 just says 1080p.