Re: Plasma Y-MAIN board LJ92-01200A
Sorry I can't help you, my TV was disassembled and disposed of being I ran out of help and know-how.
Good luck.
SevillianSTS
Member
Last Activity: 10-13-2014, 06:03 PM
Joined: 11-12-2013
Location: Northern, IN
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Re: Samsung HP-R4252 42 in plasma. No picture
"Ready for the hammer" LOL, I know the feeling.Leave a comment:
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Re: Samsung lj92-01200A Y-SUS Board
Anybody want to step in and help a novice troubleshoot this?
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Samsung lj92-01200A Y-SUS Board
Hello,
I mentioned my issue in a different thread, but decided I'd try and make one dedicated to my issue.
I have a lj92-01200A that came out of a Sayno 42" Plasma TV
I confirmed the lower Y Buffer had a shorted IC
I then found 3 shorted MOSFET's on the Y-SUS board.
I have replaced those mosfet's that were shorted G to D, but the TV power board still clicks on and then right back off a second or two later, and then the one green LED flashes 12 times over and over with the Y-SUS installed (no buffers connected)
I did notice that I can... -
Re: ATX CoolMax CX 400B Blown Capacitor
Just bought this After the $20 rebate it was only $25
[url]http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026[/url]
Still going to tear into the old one and see if I can repair it for the sake of fixing it and to have a spare lying around then.Re: ATX CoolMax CX 400B Blown Capaci...d see if I canLeave a comment:
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Re: ATX CoolMax CX 400B Blown Capacitor
Also, which capacitors are you saying to replace, The 2 large ones ?Leave a comment:
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Re: ATX CoolMax CX 400B Blown Capacitor
any thoughts on that power supply in my previous post ?Leave a comment:
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Re: ATX CoolMax CX 400B Blown Capacitor
[url]http://www.newegg.com/Product/Product.aspx?Item=N82E16817256060[/url]
so it's on sale for 39
and yes I have a MM and pretty competent with a soldering iron, just new to some of these components.Re: ATX CoolMax CX 400B Blown Capaci...components. ;)Re: ATX CoolMax CX 400B Blown Capacitor
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Re: ATX CoolMax CX 400B Blown Capacitor
This power supply came out of a Core2Duo computer that I may be turning into a server.
I read that this power supply is 70% efficient. I found a newer 80% efficiency power supply for $35
Being the server would be pretty much running all the time, would you recommend going with the newer 80% or just stick to this one.
Also, what are your thoughts on whether or not this power supply took out the motherboard with it ?
If I am going to fix this one, what would be the first line of attach ?
Remove...Leave a comment:
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Re: ATX CoolMax CX 400B Blown Capacitor
When you says "switch devices" are you referring to the mosfets under the heat sinks ?
I can get a new one of these for $34; is this still worth the work ?Leave a comment:
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Re: ATX CoolMax CX 400B Blown Capacitor
Fuse is good.Leave a comment:
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ATX CoolMax CX 400B Blown Capacitor
I have a CoolMax Model: CX 400B ATX Power Supply
It has a blown capacitor. I am assuming it is filtering the raw power coming into the unit.
Trying to figure out what to replace the capacitor with; it is totaly burnt so I can not read the side of it. Is there a general size you would recommend, or does anyone have access to a schematic ?
The circuit board says LYP004A and Rev 1.6... -
Re: Plasma Y-MAIN board LJ92-01200A
Anyone have any idea what I should check next ?
Thanks.Leave a comment:
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Re: Plasma Y-MAIN board LJ92-01200A
Any ideas what to check next. Thought I was doing good =\Leave a comment:
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Re: Plasma Y-MAIN board LJ92-01200A
It is the small cable below the power cable connector.
I am assuming the ribbon cable is a signal / controller cable, while the other is power.
...Leave a comment:
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Re: Plasma Y-MAIN board LJ92-01200A
I get 194.5 at the black wire in the power connector on the y-sus for a brief moment and then it goes away once the TV clicks to standby.
If I do not plug in the small ribbon cable below the power connector on the Y-sus, it will stay on and read 194
Whats next ? =)Leave a comment:
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Re: Plasma Y-MAIN board LJ92-01200A
Got my 3 new mosfets installed. Didn't do too bad getting them straight and flat.
Plugged the board into the TV with no buffers.
It still clicks on, then off and the green LED flashes.
I don't appear to have any shorts across either of the 2 black connectors. I checked the few hot pins vs all the ground pins on each connector.
I did notice that my new mosfets measure O.L. from the Gate to Source and from Gate to Drain. The existing mosfets measured about 14M ohms Gate to Drain and 2-5M ohms from...Leave a comment:
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Re: Plasma Y-MAIN board LJ92-01200A
Once I remove this 3rd, bad mosfet, can I plug the board in to see if it will "not" trip the tv into standby, or is that going to harm something else with out the mosfets attached ?Leave a comment:
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Re: Plasma Y-MAIN board LJ92-01200A
Got all the paste cleaned up.
I then retested to double check...
I have one mosfet that reads 1.3 ohms between Gate and Source
It reads 100.1 ohms between Gate and Drain
It reads 99.2 ohms between Drain and Source.
Does this one need replaced too ?Leave a comment:
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Re: Plasma Y-MAIN board LJ92-01200A
yes, the lower y-buffer has a shorted IC...Leave a comment:
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