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42" Hewlett Packard Plasma TV powers up but doesn't give a picture
Hello Everyone today I bought off the salvage pile at work a 42" Hewlett Packard Plasma HDTV Model Number PL4260N that when I got it home to try it out it would power up like its supposed to except for it wouldn't give a picture. I googled the symptoms and supposedly the Y-Sustain Board or the Z-sustain board was possibly the problem with one person reporting that his TV was brought back to life when he simply replaced the 4A 250V Ceramic fuses in the Y-Sustain Board (which when I tested the fuses on my Y-Sustain Board one of the fuses tested good yet and one of them tested bad using a resistance test) so I went to radio shack to see if they had the fuses I needed and all they had were the glass fuses and no ceramic fuses (apparently this TV will only power up if you have 4A 250V Ceramic Fuses in the circuit, anything else and it refuses to power up) anyways so I check the local Ace Hardware and all they had were the large fuses and not the smaller fuses in the 4A 250V Ceramic type, so I checked out Menard's and they didn't have anything either, and I'm running out of places to source these fuses because it seems that Mouser, and digi-key doesn't carry them either (the original fuse was made by LittelFuse and I checked their website and they still make the fuses) but for some reason no body sells them...
Any information about this TV and this issue or where I might source some fuses for this TV would be appreciated. Thanks, Levi |
#2
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Last edited by andy; 11-20-2021 at 03:10 PM. |
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#4
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It's probably an LG PDP42X3 panel. The fuse blows when the IPM shorts - never seen one with a blown fuse that didn't have a shorted IPM. Don't pay too much for a replacement board - they're a $100 (sometimes less) set here.
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When you say "they're a $100 (sometimes less) set here" are you referring to the resale value of the TV itself? If so I think I would rather do the repair work myself and save me some money so I could still make a little money off the set if and when I get it going again, as I've only got about $4 into the set currently and that was the price I paid to buy the TV off of salvage at work (Goodwill), plus the fuses which were only a couple of bucks.
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Audiokarma |
#6
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Well currently on epay there are some replacement boards up for sale on there but they want over $50 for them but free shipping, which my mom would have a cow if I were to pay over $50 for a part to get an old Plasma TV going that I might be lucky to get $100 out of once its going, and the DIY Repair kit isn't much cheaper. I thought this would be a pretty simple and cheap repair and an easy flip but its turning out that I may have bitten off a bit more than I could chew, if the repair kits would of been say around $20 or so, I could of easily justified that expenditure to my mom, but since the repair kits is nearly $50 I can't as easily justify that expenditure to my mom even if I can still possibly make $50 off the unit reselling it...
Last edited by Captainclock; 06-14-2016 at 11:53 AM. |
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http://www.ebay.com/itm/LG-42PC3D-UD...0AAOSwuhhXVZKR
Here's an ebay listing for a functioning YSustain Board that came out of a TV with a busted screen, and was pulled and tested in a functioning unit and it does work, but they want $57 for it and free shipping which like I said my mom would have a fit if I spent this much on a part for a Plasma TV that I'd be lucky to make $30-$40 bucks off of once I got it going and sold it, but of course that being said I guess its not really my mom's business how I choose to make money and $40 is still quite a large profit margin considering that some of the other stuff I've fixed up and sold in the past (mainly old tube powered radios and record players) only had a $10 profit margin for me. |
#8
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If your going to replace the chips yourself, buy them from Coppell TV. His stuff always works when I buy from him. There is also a possibility that once you get a chip or board replaced that you have a worn out panel. There will be lots of colored dots that you cannot adjust away. Coppell TV can also repair the board for you as long as no one has worked on it previously. As far as fuses go yes you can use glass fuses. I'm not sure where that nonsense about it only powering it up with ceramic ones. Thats a bunch of BS. The replacement IPM's come with glass fuses and work just fine
__________________
"It's a mad mad mad mad world" !! http://www.youtube.com/user/mwstaton64?feature=mhee |
#9
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Anyways where abouts on the Y-Sustain Board is the Voltage Regulator ICs? I'm wodering because I'm pretty confident in my soldering/repair skills that I think I could probably to the repair myself, and save myself some money. |
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Last edited by andy; 11-20-2021 at 03:11 PM. |
Audiokarma |
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Last edited by andy; 11-20-2021 at 03:11 PM. |
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I second all that has been said above. When I was in the repair business, I also sent my LG YSUS boards to Bobby over at Coppell TV. He's a good guy and he stands behind his stuff. For the price of the ICs and the time it takes to replace them, it was cheaper for me just to have him do it, and it's guaranteed to work.
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I've had used boards that failed shortly after installation. I have also gotten boards from ebay that said they were tested and arrived with a blown fuse. And some boards will work for years. They fail because they are run at their limits and get very hot, Best not to try a chip replacement yourself the first time. I took me awhile to get it down without damage. It's not as straight forward as you may think. A bad or partially shorted screen of buffers on the verge of failure can also cause boards to fail. LG made buffers hold up better than Samsung buffers by far. Samsung buffers usually fail first and take out the Y-sus and then it becomes very expensive very fast.
IPM's usually fail with a large bang that immediately blows the fuse but the set will generally stay running. Usually only one goes bad but sometimes both go bad.
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"It's a mad mad mad mad world" !! http://www.youtube.com/user/mwstaton64?feature=mhee |
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Audiokarma |
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