TV Spares
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May 9, 2011, 10:51 AM
Post #3 of 4
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Re: [billansor] How to tell if a Plasma tube has gone bad/?
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Hi Bull User, I am more akin to UK models but I am guessing this is fitted with a Samsung Full HD Panel, an early one? S50FH-YB01? I have dismantled at least 3 of these with broken screens, however I have not yet sold a single Y-Main or Buffer. I have however sold all 3 Power supplies. Perhaps a clue? Unplug the Cables to both the Y-Main and X-Main and see if the set powers up. (No picture obviously, but a green light?) If not you have most likely still got a power supply issue. (I'd like it's part number to see if I have any common issues listed) If it stays on you should try it with only the Y-Sustain disconnected. (If it still powers up, it's a fault on the Y-Sustain Side - Y-Sus and/or buffers) Then do as Repair Man says, plug the Y-Sustain back in and remove either the top or bottom buffer. Try the set again. If it stays on with either or both of the buffers disconnected then you've found the failed item(s). NOTE. It is common for the Y-Sustain to have caused the buffer failure, check the FETS on the Y-Sustain before you stick $100 Bucks worth of buffer into it. Plus, you can chage the failed ICs on the buffer if you have the tools. Hope that helps. Fixing Flat Screen TVs for Years. Owner of - Fix My Plasma and TVSpares.com I'll always try and help.
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