I have a standby light but it won't turn on. Can anyone tell me which wires go to the power button. Or a service manual for it?
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Re: Polaroid TDA03211c
If you open this up you may find two bloated capacitors near the two transformers on the power board.The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
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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: Polaroid TDA03211c
hi see my reply on opinion needed for polaroid ---Comment
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Re: Polaroid TDA03211c
It's not the caps, voltages are good, I just don't think the power button is working.Comment
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Re: Polaroid TDA03211c
You will have 20v/12v/5v but the red LED will be flashing the tv will not power up.I had the same thing you need to change the two 10uf 450v caps at EC17+18 if this does not work check green fuse F2 by the big cap and if it is still not working change Q16=17 9a 500vComment
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Re: Polaroid TDA03211c
My LED isn't flashing, Today I changed the power supply board and the main board and have the same problem. Steady red light, no clicks, no back lights. Is there another board somewhere I am missing?Comment
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Re: Polaroid TDA03211c
The red LED need to be off , there is still a power board problem were did the replacement come from and did it test good ?i can only tell you the problem you have is common and the replacement of the parts i listed would fix it. Some times the led flashes other times it remains on but both indicate a problem with the board.Comment
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Re: Polaroid TDA03211c
Post the output voltages from the power board. 24V, 5V SB, 12V. Just go right down the connector.
The problems vary with these sets so we're gonna need more info not just swap this and swap that.The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
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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.... -
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. -
Hi all.
I started a thread while back regarding TV power supply standby circuitry as it is something I am not quite on top of.
SMPS theory and function is becoming more familiar, however the standby part is still a bit of a mystery.
Anyway, a friend has this TV with the above mentioned power supply board which has no standby voltage, nor any other voltages leaving the board.
The mains AC comes in fine, gets filtered and rectified with power is on the main filter cap as well as the transformer and drain pins of the ICE3B0665J, but that's it.
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Hello forum. I've recently been given a Yamaha TSX 120 DAB radio and ipod dock. Its working well however when put on standby its using 6.3 watts. The manual states less than 1 watt on standby. I measured this with a plug in monitor which seems accurate with other items. In use it uses around 7.5 watts. Firstly has anyone who owns a similar radio also got a plug in monitor to check if this is normal with this unit? In the first half a second the monitor shows 0.3 watts which I suspect is what it should use but something is switching it to be almost fully powered. I've searched the manual for eco...03-01-2024, 07:25 AM -
Hello everyone,
I got a Samsung The Frame 55 inch TV for free from uncle cause it is not turning on anymore. I am in the second year of training as an electrician so I have knowledge already but I am far away from to be a pro.
The TV has Standby but ist not turning on. A Friend of mine owns a 50 inch Frame TV so I checked the One Connect Box and the One Connect Cable there. Both are good and working normally. I have opened the TV case and measured some voltages on the Board.
What I already found is that the 12.8V are not an the connector to the main board connector to the power...
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