RE: "but every so often on a fairly consistent basis?"

Video Asylum

TVs, VCRs, DVD players, Home Theater systems and more.

In Reply to: "but every so often on a fairly consistent basis?" posted by volunteer on May 30, 2010 at 05:16:43:

Unfortunately, I think you're going to be correct re longevity. In some ways, you might expect flat panels should last longer than old CRT displays did, but that hasn't generally been the case so far. Hard to say for sure though, as technological "obsolesence" has been occurring sooner so we often voluntarily replace. In general, it seems people don't keep anything as long as they used to.
Why I mentioned the cold spray is it could help detect poor solder joints. I recall reading several years ago that they were having some solder-related problems with displays of all types. This was because they were learning how to implement the new lead-free solder standards/materials properly. Flat panels of such a vintage were particularly susceptible. I was thinking your TV was about the "right" age where this could rear its ugly head, but I really don't know, just a thought... That bulb could suck a fair bit of juice I'd imagine, so a flakey connection (solder or connector) could get quite hot to the point it has a high resistance or even opens so the bulb goes out. While the bulb is out the connection cools due to no/low current through it, and then the connection gets re-made for a while. I am guessing this because it looks like all your circuits and the bulb are working *some of the time*.

Edits: 05/30/10

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Follow Ups Full Thread

Topic - Trouble shooting help appreciated - volunteer 08:31:25 05/29/10 (5)

RE: Trouble shooting help appreciated - cfraser 13:13:18 05/29/10 (4)

"but every so often on a fairly consistent basis?" - volunteer 05:16:43 05/30/10 (3)

RE: "but every so often on a fairly consistent basis?" - cfraser 14:17:04 05/30/10 (2)

"get quite hot to the point it has a high resistance" - volunteer 09:27:38 05/31/10 (1)

RE: "get quite hot to the point it has a high resistance" - cfraser 14:14:32 06/01/10 (0)

Follow Ups

RE: "but every so often on a fairly consistent basis?" - cfraser 14:17:04 05/30/10 (2)

"get quite hot to the point it has a high resistance" - volunteer 09:27:38 05/31/10 (1)

RE: "get quite hot to the point it has a high resistance" - cfraser 14:14:32 06/01/10 (0)

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