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All voltages are ok but not powering on - Televison & Video

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Hi Arvind,
If you already confirmed that all voltages are ready but the unit didn't power up. Replace the EEPROM, this is usually a 8pin IC.
Jdvillanueva

Posted on Mar 15, 2011

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Posted on Jan 02, 2017

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No power to euel pump olds intrepid


Check for battery voltage at the pump relay if none replace fuse, if ok check relay to pump voltage . if none replace pump relay. if ok check voltage at fuel pump , if none replace cable , if ok replace fuel pump.

May 02, 2017 | Cars & Trucks

1 Answer

Samsung UN55B7000WF RED LIGHT FLASHES CLCIKING SOUND BACKLIGHT FLASHES


Hi Ab7775,

1. Pl check st by 5 or 3.5 volts.

2. If it is ok, check power on 5 or 3.5 volts. Is power on voltage stable ? If this is pulsating with cliking sound, it is the main board. Otherwise it should be the power supply.

3. Please also check all the other voltage for short with ground.

You can also check the power supply board separately. Remove the connector going to main board. Put a 1k res between st by and power on pin. Plug in the ac, if all the voltage appear, your power supply is ok.

I am on line if possible please do this checking and let me know the result.

Good luck.

Aug 09, 2016 | Samsung Televison & Video

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A/c clutch doesnt engage fan works no cold air had battery problems think i might blown a fuse


Check for a blown fuse ,if ok check for battery voltage at the A/C clutch if ok the clutch is faulty, if no voltage check both sides of the A/C switch if voltage ok the cable to the clutch is open circuit ,if no voltage to the switch, cable to the power supply open circuit, if voltage to only one side of switch, switch is at fault.

Aug 03, 2015 | Cars & Trucks

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How to test the electrical system of the generator for free


Ez test to determine if stator wiring is ok. This test works on generators that have two sets of 115v plugs and 220v plug. Use a 12v, 1amp ac power supply ( smaller ac power supply should work ok ). With generator not running, apply 12v to one of the 115v outlet plugs. Now verify 12v output voltage with meter at another 115v outlet on generator. Also verify that there is about twice the voltage at the 220 v outlet plug (should be about 20v - 24v) . If the adjoining 115 v outlet plug has no output or very little voltage or if the 220 volt plug has no output, most likely stator is damaged or breaker is off. If the stator is shorted voltage reading will be very low and power supply will heat up. If stator is open, there will be no voltage at second 115v plug or 220 v plug. If voltage is ok at the other outlet plugs as per test above then most likely problem is with voltage regulator, or brushes not making contact or armature winding open or just needs to be energized. Unplug the 12v power supply after test to prevent it from overheating. Most generators have two 115v windings that together power the 220v plug. When you energize one of the windings with the 12v power supply, the second 115v winding will be energized also and give you a voltage reading about equal to 12v. You will not damage the generator with this small voltage being input thru the plug. Good luck

Oct 14, 2014 | Electrical Supplies

1 Answer

No power supply


The DC voltage may be OK but if the inside gas in the tubes is compromised then it won't make a difference. Trying a higher voltage may do the trick or placing a piece of aluminum foil in back of the segment may also do it, but remember what I said about leaving it on for a prolonged time with the higher voltage.

Mar 23, 2014 | Computers & Internet

1 Answer

I have no power charged battery was ok before now no power check the fuses there ok can you tell me why i have no power please


it seems that the battery is not charged or not connected. When you open any door the light inside must turn on. When not, the battery is not charged. Charge the battery and try again.
When the battery goes again out of the power, it indicate that the charging system or alternator are not working properly.
Start your vehicle turn the headlamps on and check the voltage on battery. It must be higher than the voltage when engine is off.
If the voltage with engine on is about 14,5 V charging and alternator are ok. Maybe the battery is dead.
When the voltage with engine on is higher than with engine off but not 14,5 V, there is problem with charging system. When the volage is the same, it can be alternator or charging system.

Oct 20, 2013 | 1990 kawasaki ZZR 1100

1 Answer

Show all solution to d945plrn motherboard problem not powering up


PSU IS OK? You're sure? You tested the 3 main voltages coming out?

DON'T rely on; "The LED lights are on, and the fans spin, so therefore the PSU must be good.

1) If ALL the LED lights were on at once, they would use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts of power.

3) A typical Processor uses 51 to 125 Watts of power.

With a Power Supply that has a weak voltage power rail, you will see LED's light, and fans spin; BUT not enough power to turn the Processor on.

Power Supply also needs to be plugged into motherboard to test, because you need a Load on the Power Supply.

PSU is KNOWN to be good? I mean KNOWN.
Not, "It's brand new so I know it has to be good"
Okay, moving on.

CPU OK?
How did you test it? Install on another working motherboard?

Are the Electrolytic Capacitors on the motherboard good?

http://capacitorlab.com/visible-failures/index.htm

http://www.youtube.com/watch?v=Lut7MX5Dd_A

Capacitors on the motherboard are used as Filters, and Voltage Regulators.
The ones used as Voltage Regulators are in the Motherboard Voltage Regulator Circuit,

http://www.hardwaresecrets.com/article/616

Part of what the Motherboard Voltage Regulator Circuit does, is to regulate voltage for the Processor. (CPU)

The CPU MUST have a steady, 'clean', supply of voltage, and it MUST be kept within the Processor's voltage tolerance range.
Too much, or too little, and the CPU shuts off. BIOS turns it off.

(CPU stands for Central Processing Unit. Another term used is Microprocessor, or simply Processor for short.
I know you are aware, just posting for all those who read the solution in the future)

http://downloadmirror.intel.com/15140/eng/D945PLRN_ProductGuide02_English.pdf

[Better motherboard due to the Intel Q965 motherboard chipset,

http://www.ebay.com/itm/INTEL-DQ965GF-CORE-2-DUO-LGA775-SOCKET-P-4-MOTHERBOARD-I-O-FACEPLATE-INCLUDED-/290863623024?_trksid=p2047675.m1850&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D11%26meid%3D5685984037376928917%26pid%3D100011%26prg%3D1005%26rk%3D1%26sd%3D330632928551%26

http://en.wikipedia.org/wiki/List_of_intel_chipsets#Core_2_chipsets

Scroll down to Q965 in left column ]

For additional questions please post in a Comment.

Regards,
joecoolvette

Feb 18, 2013 | Intel D945PLRN Motherboard

1 Answer

1996 oldsmobile eighty eight no start no power windows. Car stalled driving up hill. Fuses are ok, battery voltage is ok. Power windows did work before it stalled. Maybe a main relay could be the cause?...


How did you determine that the voltage is OK? Will it run the headlights, brakelights, and horn at the same time? It could have enough voltage without enough amperage(power). It could be a loose cable - that is what I would check first.

Feb 11, 2010 | 1996 Oldsmobile Eighty Eight

1 Answer

Power pack lights up but no power on printer


Check the output voltage of Power Pack using multimeter. Specified voltage rating will be marked near the voltage input portion of the printer. If the voltage is ok, then may be problem with the electronic board in the printer. You need technitian to fix the problem.

Apr 28, 2008 | Office Equipment & Supplies

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