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Change powe supply unit. also check capacitor

Posted on Nov 19, 2013

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Posted on Jan 02, 2017

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Why does battery go dead in two days?


If goes dead while driving not charging possible bad alternator. If goes dead regardless of driving probably a power drain somewhere. Easy way to test alternator is test battery voltage with a multimeter and make sure at least 12.5. Start car check voltage again and see what it is shot be around 14. If not alternator is most likely bad.

Apr 21, 2016 | 2000 Jaguar S-Type

1 Answer

2000 chevy astro van everything dead no power tonothing is there a mainfuse somewhere all the fuses are good


Did you check for voltage, anywhere, use a test lite follow the positive battery connections check for voltage. Did you check fuse circuit for voltage? Even if the fuse is good, if no voltage at fuse circuit, the circuit is still dead. Of course voltage is no good without ground.

The battery circuits, positive and negative good?

Mar 27, 2015 | 2000 Chevrolet Astro

1 Answer

Can a dead battery be recharged and how


If you have a capable battery charger, then a dead battery can be recharged. I would suggest recharging the battery to the proper voltage and then letting it set for 24 hours. In 24 hours check the battery for the correct voltage. If it maintains the charge, then you should be okay to reinstall the battery. If it does not, then you may have a dead cell in the battery and it would need to be replaced. Video about How to Test Battery

Aug 28, 2014 | Exercise & Fitness

1 Answer

HP P4SD, its running good with 4 gb RAM, P4 3.0ghz, and a couple sata hd. The problem is the fan output voltage, i havent been able to read the output chassis and cpu cooler pins voltage cause i can find...


"i can find my dmm?" did you mean CAN'T?
"its clearly off", what is off?
the fans are 3 pins,2 are power, one is RPM tachometer.
"it all works fine", so you can boot and run any OS, ?

"the voltage reads +12vdc", where, at fan or PSU?
the fans run off 12vdc, they are DC motors (from outside fan)
if the fan runs slow at 12vdc the the fan is bad or is a low RPM
fan, as some are, bigger fans run slow, for less noise.!

first is the CPU fan it must run full speed, if not the CPU will overheat in seconds and ALL CPU shut them selves (by there selves) this way. so CPU fan is first. what does it do... there....?

then BIOS screens. GOT BIOS UP? and running? with, ESC key pressed>.
let me guess your symptoms
1: PC dead. will not boot.
2: BIOS dead.
3: all fans DEAD,.
4: power switch works and all PSU voltages read right, (seems not)/?
5: if the PSU power wire reads right(DMM), matching the side sticker voltages, and the CPU is dead, the MOBO is dead, or CPU is toasted.


here is a modern PSU, sticker.
see 5 to 10 power lines, see them. all must read correctly
if a fan is dead, then its dead if 12vdc is present on the fan power pins.




psu-dsqaqngzuibs2svxh2bga4t0-2-0.jpg

Apr 28, 2017 | HP Asus Motherboard P4SD-LA Socket 478...

1 Answer

Windows ,gages, air, & heat all quit working at same time was not a fuse


SOUND LIKE A DEAD BATTERY, OR LOOSE CORRODED BATTERY CABLES.CHECK BATTERY VOLTAGE SHOULD BE 12.6 VOLTS.IF BATTERY WAS DEAD, MAKE ALTERNATOR WORKING,WITH ENGINE RUNNING ALTERNATOR OUT PUT VOLTAGE AT BATTERY SHOULD BE 13.5 - 14.5 VOLTS.THERE IS A REASON BATTERY WAS DEAD EITHER BATTERY WORN OUT OR ALTERNATOR STOP CHARGING BATTERY.

Apr 02, 2011 | 1999 Oldsmobile Alero

1 Answer

Voltage up to on/off switch found 3.7V,But set in dead condition{No Display,Sound & Key pad functions}.Please suggest


Voltage up to on/off switch found 3.7V,But set in dead condition{No Display,Sound & Key pad functions}.Please suggest

Aug 10, 2010 | Cell Phones

1 Answer

No display even after the system boots


You either have a dead CPU or a dead motherboard or a partially-dead power-supply -- the power-supply should supply different voltages to different computers, i.e., one voltage to spin fans, and a different voltage to power the RAM, and a different voltage to power the motherboard. So, it can be "partially" dead.

Borrow a power-supply, and try that first.
If all else fails, take the computer to a qualified technician.

May 31, 2010 | AMD Athlon 64 X2 3800+ Dual Core Processor...

1 Answer

Motherboard dead? Standby voltage present.


Replace the motherboard and get an Asus or something decent.

May 18, 2009 | PC Chips P23G Motherboard

1 Answer

Battery Charge


The best way is to get a voltmeter and check the voltage of the battery with the truck running and not running. When the truck is running, the voltage across the battery terminals should be aboput 14.9 volts (showing the alternator is charging the battery). With the truck off, the battery voltage should be about 12 volts (showing that the battery is holding the charge). From there, you should be able to tell which is bad.

Aug 11, 2008 | 2002 Ford Escape

1 Answer

Microwave fuse mystery


AHD_NZ

If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

Guest

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

We're happy to help and we appreciate your thoughtful rating of our answer.

May 28, 2008 | Microwave Ovens

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