Vizio P50HDTV10A

[tom66]

Re: Vizio P50HDTV10A

Yeah, they're especially difficult on these panels because of how the buffer boards are upside down.

[aaronwt6]

Re: Vizio P50HDTV10A

Yeah, they're especially difficult on these panels because of how the buffer boards are upside down.

Agreed. Have to completely screw down the boards each time to test. I thought it was a stupid design. Coming from an engineer's standpoint it made no sense to me at all.

Anyway, it was nice to see the set come on. That was only my 2nd plasma repair so it felt like a victory.

[tom66]

Re: Vizio P50HDTV10A

I'd imagine that in the production facility they'd probably use a jig to install it because I can't imagine anyone being able to do that manually at any particular speed.

[aaronwt6]

Re: Vizio P50HDTV10A

With the total amount of cables on the back of that particular set, I don't know how it could be done very quickly regardless. I'd like to know the time per set for sure.

[tom66]

Re: Vizio P50HDTV10A

There are some videos of plasma TV factories like How it's Made on the ex-Hitachi factory in Japan but I haven't yet seen one with buffer connections being installed, probably it's partially a trade secret as that would be one of the more laborious tasks and more expensive.

[aaronwt6]

Re: Vizio P50HDTV10A

I'm going to look up the How It's Made episode. I'd love to see that regardless.

[tom66]

Re: Vizio P50HDTV10A

Here:
https://www.youtube.com/watch?v=vUHFIBuIcYE

[aaronwt6]

Re: Vizio P50HDTV10A

Cool clip. Thanks man!

[aaronwt6]

Re: Vizio P50HDTV10A

I unfortunately have another update on this. TV worked for a couple days but is now showing black screen after 20 minutes of being on. Can be left off for 10 minutes at which point it will run for about another 20. Again this thing is 200 miles from me so it'll have to wait til next trip. Any clues on what may be wrong? Bad connection maybe or bad replacement buffer?

Thanks as always,

Aaron

[aaronwt6]

Re: Vizio P50HDTV10A

Well, I called them back to tell them to quit using it for now but it was too late. Back to the yellow line down the middle. Seems like maybe something else caused the buffer board to fail. I'll probably have the TV at some point to look in to it further.

[tom66]

Re: Vizio P50HDTV10A

They may be unrelated problems. Buffer boards very rarely fail intermittently. It's plausible the control board had a problem, which may have damaged the buffer board. Usually with the solid line it's only one or two FETs though so it's not super difficult to fix.

[aaronwt6]

Re: Vizio P50HDTV10A

Well whatever the case the replacement buffer board was $40 and now it's dead too. Hate to dump much more money in to a set that old. Was already trying to do a favor for a friend fixing it. Maybe I'll dive back in to it once I can get it to my house.