Power supply is dying.

Possibilities:
1. Dying power-supply is creating unstable voltages
2. Dying capacitors on motherboard are unable to stabilize voltages
3. bad RAM (compare to writing in pen on greasy paper -- nothing is realiably being recorded)
4. bad spots on disk-drive (computer is spending too much time trying to write to those "bad" spots)
5. other "dying" issues with the motherboard


Try:
1. different power supply
2. if you have more than one stick of RAM, remove one and test-drive. Repeat with the other stick(s).
3. Try different RAM.
4. Force CHKDSK ("Check Disk") utility to scan *all* of the disk-drive.
5 Inspect the motherboard for bulging/leaking capacitors.
6. Replace the motherboard.
7. Replace the whole computer.

This problem is not easily to be solved.Tries to changes all the capacitors components even if u think is good around the bad capacitors surrounding area.After that,if u still have the same problems.This problem could be any high voltage components parts like transformers to ICS power regulator.Trying to fix this power supply board probably beyond your ability and u must also have the tv power supply board original schematic and electron scope too . .To measure those power transformers and ics power regulator output.Tries websites like Shopjimmy.com,EBay.com to buy a whole new refurbish tv power supply board for the replacement that is ur best bet.

Now tv turn on,pictures it flashes only a couple sec. than died have sound left only?Yes,than the tv power supply board,that the board where the tv power a/c cord plug into it.Board it might have dying and dead components parts that are called capacitors.Take the tv aparts.Inspect and check the tv power supply board carefully for dying and soon to be dead capacitors parts,these capacitors parts are alway bulges up or puffing up onto it tops.U have all the tools and know basic electronic also can do basic soldering work too?Yes,replaced all these dying capacitors parts are bulges or puffing up on to it tops capacitors parts with the same Micro Ferit and those capacitors voltages like 5 or 10 voltages higher the old capacitors components parts u replacing,now will solved this problems,also capacitors will last longer and have more heat resistance than before.If the tv power supply board check out and have none dying capacitors components parts that are dying and soon to be dead are bulging or puffing up on to it tops.Than the tv have those 2 long boards each of it sides that are called LCD inverter boards are dead,these 2 long LCD inverter boards only job are to provided the tv LCD screen panel a backlight to produced pictures.If u can't repair the power supply board by ur self,if the tv power supply require it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refrubish power supply board or those 2 long LCD inverter boards for the replacement.

If u unplug the tv power supply source and replug it back in the tv problems it go away?Yes.The power supply board is the source of the problems,it have dying capacitors parts.U have all the tools and understanding basic electronic also can do basic soldering?Yes,check carefully in the whole power supply board for dying capacitors parts,capacitors are dying are alway bulges or puffing up on to it tops.Replace all the dying capacitors with new capacitors with the same Micro Ferit and the capacitors voltages like 5 to 10 higher voltages more than the old capacitors for better heat resistances.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

look ON THE POWER SUPPLY FOR SWOLLEN CAPASITORS. usually 2 RIGHT BY HEAT SINK. VALUE VARIES... REPLACE ANY SWOLLEN CAPASITORS AND SHOULD SOLVE PROBLEM

Hello,
Swollen, Bulged, Bad Capacitor The main cause of this power up problem are bad capacitors on your power if the capacitor is bad
What you need for the opening of the television is Screw driver, Soldering iron(40watts+), Desoldering braid, Soldering wire, and capacitors.
Now lets talk about the specs, capacitors hold 3 important value:
1. The capacitance measured in uF(micro farads) (ex. 2200uF), 2. Voltage (ex. 10v), 3. Temperature (ex. 105°C)
Important Notes:
Flat panel Television power supply capacitors has 10v installed on the board and it is attached to a 12v bus which is causing to bulged.

Look at the bad capacitor and get the right information from it, remember uF, voltage and temperature. Mine, I only change 2 capacitors. It needed two 2200 uF, when I first saw my power supply it was really easy to spot the bad caps. Some Samsung LCD owners did went ahead replace all the capacitors on the power supply to make sure. Now if you’re like me, an inexperience solder, I would not recommend changing all the capacitors because to me it was time consuming for a noob(newbie) like me ^_^.

Few things to take note, always make sure you have the right polarity. Negative part is where the colored stripe on the capacitor.
But if otherwise, the power supply board is bad, you can try websites Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.
Hope this helpout...

red- +5v
yellow- +12v
orange - +3.3
black- 0v
blue- -12v
white - -5v
green - ps-on(+5v)
gray- power good(+5v)
purple- stand by (+5v)
disconnect smps from motherboard give the power to smps and short green and black wires and measure the above voltages

The exact same thing happened to mine several days ago. I opened mine up, noted that two of the capacitors on the power supply are a bit puffed up, and tested the power supply's 12V and 5V outputs. The 12 Volt output is fine, but the 5 Volt output is only putting out 2 Volts. In short, all of the capacitors on the power supply are made by the same company (Jenpo) and apparently these capacitors were made using the stolen but incomplete formula for manufacturing capacitors much more cheaply. That "capacitor scandal" has cost electronics manufacturers millions. In any event, this would explain why Walmart blew out these Cyberhome CH-DVD 300 players for such a cheap price. Obviously all of the capacitors on the power supply will eventually fail. I have already experienced similar capacitor related problems with a few computer motherboards and other electronics equipment which I bought in the early to mid 2000's. I am contacting Cyberhome to see if they will send me a replacement power supply to go in my CH-DVD 300.

This is a fault in the power supply itself, I have just repaired one of these power supplies successfully.
The fault is caused by the failure of the filter capacitors on the 12V supply rail, and if the power supply is left connected to the mains supply (In our case 240V 50Hz) without the drive connected as a load, the unloaded output voltage will exceed the voltage rating of the capacitors, causing their failure. The failed capacitors had very obvious bulges at the top, and one was beginning to leak onto the PCB.

The filter capacitors on the 12V supply rail are rated at 16V, and the cpacitors on the 5V rail are rated at 10V, and when operated without a load, the 12V rail rises to approximately 19V, and the 5V rail rises to approximately 8V. All output filter capacitors are 1000uF, and 105deg C temperature rated.

I repaired my power supply by replacing all of the filter capacitors on the DC low voltage output rails with 1000uF 25V capacitors. Be careful to only fit the 105 deg C rated caps, as they operate at elevated temperatures in an enclosed environment with no ventillation to cool the power supply.
To ensure that the repair was reliable, I also replaced the filter capacitor on the 5V rail with the same 1000uF 25V, even though that capacitor showed no immediate signs of failure.

When reassembling the power supply, care must be taken to ensure that parts like the ferrite cored transformer are thermally bonded to the aluminium heatsink with a smear of heatsink compound.
When the power supply was first powered up following repair, everything was normal, the green power LED came on as usual, the supply outputs both came up OK, and the unit was not making any buzzing sounds, completely silent. The HDD now operated as normal when once again powered from this power supply.

This was the fix for my particular LaCie power supply model ACU057A-0512, and the supply once again works normally.


Tim,
Brisbane Australia.

Harry, the float and float switch are only safety devices to cut the power to the valve in the event the control board fails. The fill is controlled by the board. It sounds to me like it may be the valve itself. You can verify this by taking a meter and checking the voltage during the fill cycle. If the voltage drops out and it's still filling, it's your valve. If the voltage stays constant until the float switch kills it, it's your board...Catriver...post back.