Re: Sansui Sled2453w No Standby Set Is Dead
eww looks like he will be ordering new board im to blind to do that one lol
eww looks like he will be ordering new board im to blind to do that one lol
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Re: Sansui Sled2453w No Standby Set Is Dead
thank you much budm ill replace what I can then go from thereComment
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Re: Sansui Sled2453w No Standby Set Is Dead
You will be better off with the new board.
I had been watching the thread but did not chime in until I was able to get good clear pictures of the board from Shopjimmy to allow me to see how the components are connected on the board to be able to tell you what to test.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Sansui Sled2453w No Standby Set Is Dead
I pulled that mosfet and it seemed to check good no shortComment
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Re: Sansui Sled2453w No Standby Set Is Dead
I may have gone open circuit when it pops, or it can be the output of the IC stuck high instead of switching on and off at high frequency so the MOSFET is fully on and caused over current draw. I would not taking a chance since it is not that expensive.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Sansui Sled2453w No Standby Set Is Dead
replaced power board and mainboard, when I plug the set in now red light comes on, then the blue light comes on, and screen tries light on its own has some colors very blurry which grows brighter and brighter without hitting any buttons. could this be another bad mainboard any help I would be greatful for thanks.Comment
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Re: Sansui Sled2453w No Standby Set Is Dead
tv has power and sound now picture is glowing white bleeding to black? cant see any images bad lcd?Comment
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Re: Sansui Sled2453w No Standby Set Is Dead
can you post picture so we can see what you mean.Comment
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Re: Sansui Sled2453w No Standby Set Is Dead
its not doing it now, just has backlight! it isnt bright white now, bleeding to black, just a low backlight all I did was try plug in my computer as a vga source to the pc vga input ill try add some picsComment
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Re: Sansui Sled2453w No Standby Set Is Dead
why did you relace the mainboard? have you still got the old one to try? also double check you have reconnect all leads and ribbon cables etc i know ive missed reconnecting the odd one and got odd issues.Comment
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Re: Sansui Sled2453w No Standby Set Is Dead
I replaced mainboard because it had burned spots on it when I got it. it wont even power up with old mainboard ive tried it. the psu was also bad no standby. this tv was surged or was in storm my friend told me I tried old mainboard with the new psu and it wont even power upLast edited by Sinfury2112; 09-30-2015, 07:27 AM.Comment
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Re: Sansui Sled2453w No Standby Set Is Dead
is the tcon board built into this psu?Comment
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Re: Sansui Sled2453w No Standby Set Is Dead
also checked all the ribbon cables they all seem in placeComment
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Re: Sansui Sled2453w No Standby Set Is Dead
you will have to post a picture of the back of the tv as some are built onto the panel etcComment
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Re: Sansui Sled2453w No Standby Set Is Dead
unscrewed the back of lcd where permantly mounted tcon was and a square chip with dozens of pins had hole burned through it that explains itComment
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Re: Sansui Sled2453w No Standby Set Is Dead
surge took out every board in this whole tv lolComment
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Re: Sansui Sled2453w No Standby Set Is Dead
must of been a good surge but hey you can keep or sell the power supply and mainboard, you can strip the panel and keep the leds, so alls not lost plus you have proably learnt from doing the set to this point.Comment
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Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Samsung UN50KU6300 dead no standby led
01-04-2024, 01:33 PM
Greetings to all, a while ago my TV was dead, it didn't turn on and the standby light was off, the next day it is working. But these days it no longer wants to turn on, I did some troubleshooting, I disconnected the main board, I checked the voltage on the backlight and there is 400 DC, when I connect it again the main board the voltage drops, in all that troubleshooting, miraculously the standby light comes on and the TV works. After an hour I check and test, I turn on the TV, the Stanby light flashes 3 times and it...05-22-2024, 02:07 PM -
Hi. I got a Vizio with no power or standby, and won't turn on with remote or button. I checked the voltages on the connector and all read 0.00V or nearly 0(0.050 ON/OFF pin). None of the pins are labeled STB for standby although I do see some 5V pins. Other than the obvious standby led, which isn't coming on, is there a way to check for standby voltage on this PS. I'm trying to see if my problem is the PS or mainboard. Some Vizios I have fixed with no standby led me to think it was the PS but it turned out being the mainboard. Any experience with this set would be greatly appreciated. -
This is my first attempt at troubleshooting a board like this, I know I could just buy a new board but I'm curious to figure out how this works. I've been testing different components in the evenings this week and I think the problem is with the IC failing to start up for some reason. When the board is plugged in there is no standby voltage.
Then today it randomly sprung to life like a zombie but shortly died thereafter. I have no idea why it would have done that and its the first time I've seen it running. I discharged capacitors on the board last night, then it was sitting today.... -
I've owned this C1 from new since late 2021, and it has now suddenly started with the following symptom:
If power has been connected for a while, the red standby lamp turns off, and the tv wont turn on (no reaction from remote or button on tv).
If power has been disconnected for 5 minutes, the tv turns on fine, until turned off and left for a couple minutes, as the standby light will then turn off again.
I've seached and found that this is most likely a failing PSU, and I've seen repair services on eBay fixing these symptoms, so I am hoping that someone here has fixed... -
Greetings to all, a while ago my TV was dead, it didn't turn on and the standby light was off, the next day it is working. But these days it no longer wants to turn on, I did some troubleshooting, I disconnected the main board, I checked the voltage on the backlight and there is 400 DC, when I connect it again the main board the voltage drops, in all that troubleshooting, miraculously the standby light comes on and the TV works. After an hour I check and test, I turn on the TV, the Stanby light flashes 3 times and it doesn't turn on.01-04-2024, 12:03 PM
Comment