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These old 42" Plasma sets rarely make more than $80 - $100 here.
LG Plasmas (and many other brands use LG panels) of this generation and earlier often have tired/worn out panels. You will still get a picture, but there will be random red dots everywhere that are very noticeable on dark scenes. Sometimes you can tweak them a bit and get a usable picture, sometimes there is no happy medium - Adjust far enough that the red go away (or at least are minimal) and you get dark dots on bright scenes. IPM replacement is not easy. It's a multilayer board and the ground pins will soak up all the heat without budging. Preheating the board and low temp solder help. I don't spend any money or much time on these kind of sets anymore - they're just not worth it. If I don't have a good used board available (that I pulled myself from another junked set, not from ebay) I don't bother. |
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A little over a month ago, you faced the same dilemma with a Westinghouse 32 " set, where the cost of boards and other parts approached or surpassed the value of the set.... how did that work out for you?
jr |
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And the biggest problem is that with these flat panels is that its hard to know whether or not they'll be worth fixing or not unless you take them apart and get a good look at the insides and when I see a Flat Panel in the salvage bin at work its not like they're gonna let me take the TV apart to see if its got blown capacitors in the power supply before I buy it off the salvage to see if I want to buy it or not, that's kind of what the repair business is all about, though isn't it, you're taking a chance that something may or may not be worth fixing to sell, its not just flat panel TVs that are that way, but also the old CRT TVs are that way as well and so are the old radios, when you buy something that's in unknown working order to fix it up and resell it, you're taking a chance that it may turn out to be a piece of junk that's not worth your time. Last edited by Captainclock; 06-15-2016 at 02:52 PM. |
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https://www.amazon.com/SainSmart-Poc...ords=esr+meter Or a nicer looking box wih some handy short clip leads: https://www.amazon.com/Huhushop-Tran...ords=esr+meter Either one of these, properly used, should substantially improve your chances of finding bad caps on these sets... bulged and oozing appearance does *not* tell the whole story. just my 2 cents, jr |
Audiokarma |
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000
Last edited by andy; 12-07-2021 at 04:18 PM. |
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I have even seen new (cheap) caps that were about 2 times the value stated on the chart and they seemed to work ok, while higher quality brands usually beat the chart number by a significant margin. jr |
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Y-Sustain Boards on eBay
Hello everyone, I just did a search for the Y-Sustain board I need for this TV (The HP Plasma) and there are a couple on there with buy it now or best offer prices, with one going for $62 buy it now price or best offer and another one going for $74 buy it now or best offer and yet another one going for $94 buy it now or best offer, and I'm guessing that all of these prices are way too high for what they ought to be, so with that in mind what would be a good price to offer if I was to use the "best offer" option to try and get the board? I was thinking $25-$30 or so, and yes all three of these boards are reported as being functioning boards by the sellers who said that they came out of TVs with broken screens but otherwise were fully functioning because they removed the boards from the broken TVs and tested them out in a good TV, and I was thinking $25-$30 because of the fact that they can't guarantee the board's longevity since it is a board that is known to malfunction after a while, depending on how hard the TV is used.
What do you guys think? Any input and suggestions would be appreciated. |
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You aren't going to get a working board for $30. If you could get one for even $50 I'd be surprised. It's a high demand board since there are so many TVs that use it.
Don't forget, you might be able to recoup some of your money by selling the bad board as a core. At least that's what I used to do, I don't know if they still have any value. |
Audiokarma |
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Here are some pic of tired panels in LG plasmas. These are 42V7s, one generation before the 42X3 in your HP set. I've had many 42X3s in the same condition.
One of these was working as found, but likely dumped due to the dots. The other needed a Y-Sustain (which I had on hand) which got the set going again, but it doesn't produce a watchable picture (at least for me, I've seen people tolerate worse). You can see someone watched a lot of FOX sports. The dots vary with scene content and vary over time. They do seem to get better (but never go away completely) when the set is left on for a while. There is a degree of adjustment on the Y-sustain board, and sometimes they can be tweaked to produce a better picture; With these two adjusting gave you a choice or bright dots or dark dots - no happy medium. I have read that the dots can be caused by bad caps on the sustain boards, but I have tried recapping them in the past and it did not improve the picture. |
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The dots are the size of individual pixels. The white picture with the FOX sports logo is supposed to be a full white screen - The colored pixels shouldn't be there and represent pixels that are not lighting, or not lighting fully. On the black picture with the FOX sports logo it should be a completely black screen, the lit pixels should not be lit.
I sold one of these for $60 after other buyers rejected it at $80. Some people don't notice the dots, or are willing to live with them if the price is low enough. Stick it on the shelf for a while until another set you can get a board from turns up for the right price. |
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